2024 XK14 possible cometary activity
 ? Hello all, ? 2024 XK14 is a centaur in a 70 year retrograde orbit, which arrived at perihelion on 2025 May 20, I imaged it on May 31 and it appeared possibly cometary of V mag 17.8, possible tail 25” in PA145. and about 5’ East of mpc ephemeris. Find below updated orbital elements based on my observations. It will be increasingly observable for southerners over the next few months. ? ? 
? Cheers, Michael Mattiazzo
|
Thank you for the offer, but I found someone who is helping with this.
Sincerely, Gary
I can help.? ? Thank you, but I don't speak Japanese. I am hoping to find someone who can access the book easily and translate a couple of passages for me.
Sincerely, Gary You are looking for the book "日本天文史料" by Shigeru Kanda?
I don't have it myself. It's held by several large public libraries in
Japan.
NAOJ(National Obserbatory of Japan) Library's Catalog (OPAC)
Tokyo Metropolitan Library
And, you can also order it from below URL.
日本天文史料綜覧 (1978年) －
---------------------------------------------------------------
? Stargaze Co., Ltd.? Shigekatsu Funamoto
? 1567-48 Takahagi, Hidaka, Saitama 350-1213 Japan
? TEL 042-978-5965? FAX 042-978-5984 (Country Code +81)
? E-Mail : funa@...
? HomePage :
---------------------------------------------------------------
On 2025/05/28 1:34, Gary Kronk via wrote:
> Does anyone have easy access to this 1935 book by S. Kanda? I need
> someone to provide a couple of translations from this book. I am trying
> to confirm the correctness of a couple of translations currently at my
> disposal, which are conflicting with each other a bit. One comes from
> Kanda's book.
>
> Sincerely,
> Gary
>
|
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Show quoted text
On May 27, 2025, at 11:34, Gary Kronk via groups.io <gkronk@...> wrote:
? Thank you, but I don't speak Japanese. I am hoping to find someone who can access the book easily and translate a couple of passages for me.
Sincerely, Gary You are looking for the book "日本天文史料" by Shigeru Kanda?
I don't have it myself. It's held by several large public libraries in
Japan.
NAOJ(National Obserbatory of Japan) Library's Catalog (OPAC)
Tokyo Metropolitan Library
And, you can also order it from below URL.
日本天文史料綜覧 (1978年) －
---------------------------------------------------------------
? Stargaze Co., Ltd.? Shigekatsu Funamoto
? 1567-48 Takahagi, Hidaka, Saitama 350-1213 Japan
? TEL 042-978-5965? FAX 042-978-5984 (Country Code +81)
? E-Mail : funa@...
? HomePage :
---------------------------------------------------------------
On 2025/05/28 1:34, Gary Kronk via wrote:
> Does anyone have easy access to this 1935 book by S. Kanda? I need
> someone to provide a couple of translations from this book. I am trying
> to confirm the correctness of a couple of translations currently at my
> disposal, which are conflicting with each other a bit. One comes from
> Kanda's book.
>
> Sincerely,
> Gary
>
|
Hi Roberto, all, ? You are correct, of course. Up until now, and in light of the MPC’s requirements, I just haven’t considered that a high enough priority to acquire the necessary software (other than Astrometrica, which, as you, I utilize for astrometry). If I do decide to pursue things along those lines in the future, I might consider getting those packages. ? I note that, concerning the object that precipitated this discussion (A11nyuL = C/2021 K5), the next set of images I took did definitely show it as cometary, and I reported it as such. I’ve seen images taken by other observers (notably Taras Prystavski on May 28) that show its cometary nature rather well. ? And, while on this topic . . . ? We’ve had discussions here and on another forum (i.e., Facebook) about the potential cometary activity I possibly imaged on (308607) 2005 WY3. There were a FWHM analysis reported on FB that at least was somewhat suggestive of a cometary nature, although as was the case with the various images I took of this object, none of this is anywhere near conclusive. (308607) is now just a little over two weeks away from perihelion passage, but unfortunately is too low for me to get with LCO (present elongation 43 degrees, and decreasing). Yes, this is a hint – a plea – for anyone with suitable equipment to try to verify, or conclusively dis-confirm, any possible cometary activity on this object before it gets too low for anyone to access. ? I’ve also been imaging (6144) Kondojiro – which is now less than a week away from perihelion – on a semi-regular basis, my most recent images being from last night. Totally stellar on all images . . . For what it might be worth, the FWHM measurements by Astrometrica on last night’s images are essentially identical to those of stars of similar brightness. ? ? Sincerely, Alan ? Of course the MPC on the dedicated page asks for the diameter and not the FWHM. But the FWHM is the only scientific tool to be sure that the recorded object is a comet and not a star. I use a photometry program (Mira) because it is much more precise than Astrometrica (which I use for astrometry) and in some cases, to be more sure, through a friend I ask for measurements with IRAF. Also sometimes for the object and the stars I create an equindensity contour to see the shape.
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----- Original Message ----- Sent: Monday, May 26, 2025 7:20 PM Subject: Re: [comets-ml] NEOCP object A11nyuL Hi Roberto, all, ? Astrometrica automatically gives FWHM measurements, but I usually don’t pay too much attention to these, especially since the MPC’s “Report Cometary Activity” form requests full coma diameters and specifically states “not FWHM.” ? I took an additional set of images last night, coincidentally at almost exactly the same time as Jordi’s image that he posted. The appearance on my images is very similar to the appearance on his, i.e., condensed, but slightly and definitely diffuse. I’ve now reported it to the MPC as “definitely cometary,” and I see that it has now been moved to the PCCP. ? As Maik has pointed out, the orbit looks reasonably solid now. It’s not quite as “interesting” as some of the initial orbits, but still looks pretty good. The big question, as he states, is whether or not it will survive a perihelion passage this close to the sun. Hopefully it will undergo an upsurge in activity as it approaches perihelion, and perhaps it might turn out to be “old” in the Oort sense; if all this happens, then we northerners might still be in for perhaps a somewhat decent show, although probably not any kind of “Great Comet.” ? Sincerely, Alan ? Have you tried calculating the FWHM of the object and that of the
|
?
Of course the MPC on the dedicated page asks for the diameter
and not the FWHM.
But the FWHM is the only scientific tool to be sure that the
recorded object is a comet and not a star. I use a photometry program (Mira) because it is much more
precise than Astrometrica (which I use for astrometry) and in some cases, to be
more sure, through a friend I ask for measurements with IRAF.
Also sometimes for the object and the stars I create an
equindensity contour to see the shape.
Regards,
Roberto Haver
157 Frasso Sabino
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----- Original Message -----
Sent: Monday, May 26, 2025 7:20 PM
Subject: Re: [comets-ml] NEOCP object
A11nyuL
Hi Roberto,
all,
?
Astrometrica automatically
gives FWHM measurements, but I usually don’t pay too much attention to these,
especially since the MPC’s “Report Cometary Activity” form requests full coma
diameters and specifically states “not FWHM.”
?
I took an additional set of
images last night, coincidentally at almost exactly the same time as Jordi’s
image that he posted. The appearance on my images is very similar to the
appearance on his, i.e., condensed, but slightly and definitely diffuse. I’ve
now reported it to the MPC as “definitely cometary,” and I see that it has now
been moved to the PCCP.
?
As Maik has pointed out, the
orbit looks reasonably solid now. It’s not quite as “interesting” as some of
the initial orbits, but still looks pretty good. The big question, as he
states, is whether or not it will survive a perihelion passage this close to
the sun. Hopefully it will undergo an upsurge in activity as it approaches
perihelion, and perhaps it might turn out to be “old” in the Oort sense; if
all this happens, then we northerners might still be in for perhaps a somewhat
decent show, although probably not any kind of “Great
Comet.”
?
Sincerely,
Alan
?
Have you tried calculating the
FWHM of the object and that of the
|
International Workshop on Cometary Astronomy VII
as posted at the "ICQ Comet Observations" Facebook forum:
?
We have now obtained a great venue for our seventh International Workshop on
Cometary Astronomy (IWCA VII): the Madrid Planetarium on Friday, 2026 August 14.
We are planning to hold this "pro-am" meeting two days after the total solar eclipse of
2026 August 12 in Spain, and we hope to attract a large number of cometary enthusiasts
(both professional and amateur astronomers) from around the world who plan to travel to
Spain for the eclipse.? We will remember our colleague and friend Charles Morris at
this meeting with dedicated time for reflections and discussions of Charles and his work;
Charles was very involved with most of the previous Workshops dating back to 1982.
?
We have had many successful and fruitful meetings in this Workshop series, dating back
to the 1980s. We want to know levels of interest in attending this meeting, so we can
decide the size of meeting room needed and whether we should extend the meeting an
extra day to Saturday (Aug. 15). We have gotten the Madrid Planetarium at no cost, so
we hope to keep registration costs very low (if not zero, as we have often managed in the past).
As in the past, our Workshops are heavily geared toward panel discussions with focus on
participation from the audience -- so our meetings are different from the "usual" astronomy
meetings where long one-person talks are the norm.? Our Workshops focus on the work
of amateur astronomers at all levels, as well as how professional astronomers use amateur
data for their research and what amateurs can do to further aid the scientific study of comets.
?
We chose Madrid because of its central location in Spain, with allowance of a full travel day
between the eclipse and the start of the meeting. Of course, many at the meeting will also be
talking (informally) about their experiences in viewing the eclipse, so should be a fun time.
This will be our fourth IWCA to be timed with a total solar eclipse.
?
We will post details at the ICQ website -- -- as they
become available, including a list of all astronomers who tell us that they plan to be in attendance
at IWCA VII.? Please spread the word!? Please state your intention or plans to attend the
Workshop here, or via email or private messaging to me.
?
- Dan Green
|
BAA Comet's Tale newsletter issue 43
Issue 43 of the newsletter of the BAA Comet Section has just been posted online for you to download:
Many thanks to all of the authors who contributed material for this edition.
If you would like to contribute to the next edition please let me know. I expect that this would be published sometime next winter if we have enough material.
Nick James. Director, BAA Comet Section.
British Astronomical Asssociation.
|
Dear Gary Kronk,
I have on hand the 1935 issue and a reprint of the 1978 issue (top and bottom two editions).
If you tell us what you need, we can help.
Sincerely,
Hirohisa Sato
e-mail : hirohisa-sato@...
toggle quoted message
Show quoted text
On 2025/05/28 1:34, Gary Kronk via groups.io wrote: Does anyone have easy access to this 1935 book by S. Kanda? I need someone
to provide a couple of translations from this book. I am trying to confirm
the correctness of a couple of translations currently at my disposal, which
are conflicting with each other a bit. One comes from Kanda's book.
Sincerely,
Gary
|
Thank you, but I don't speak Japanese. I am hoping to find someone who can access the book easily and translate a couple of passages for me.
Sincerely, Gary
You are looking for the book "日本天文史料" by Shigeru Kanda?
I don't have it myself. It's held by several large public libraries in
Japan.
NAOJ(National Obserbatory of Japan) Library's Catalog (OPAC)
Tokyo Metropolitan Library
And, you can also order it from below URL.
日本天文史料綜覧 (1978年) －
---------------------------------------------------------------
? Stargaze Co., Ltd.? Shigekatsu Funamoto
? 1567-48 Takahagi, Hidaka, Saitama 350-1213 Japan
? TEL 042-978-5965? FAX 042-978-5984 (Country Code +81)
? E-Mail : funa@...
? HomePage :
---------------------------------------------------------------
On 2025/05/28 1:34, Gary Kronk via wrote:
> Does anyone have easy access to this 1935 book by S. Kanda? I need
> someone to provide a couple of translations from this book. I am trying
> to confirm the correctness of a couple of translations currently at my
> disposal, which are conflicting with each other a bit. One comes from
> Kanda's book.
>
> Sincerely,
> Gary
>
|
You are looking for the book "日本天文史料" by Shigeru Kanda?
I don't have it myself. It's held by several large public libraries in Japan.
NAOJ(National Obserbatory of Japan) Library's Catalog (OPAC)
Tokyo Metropolitan Library
And, you can also order it from amazon.co.jp below URL.
日本天文史料綜覧 (1978年) －
---------------------------------------------------------------
Stargaze Co., Ltd. Shigekatsu Funamoto
1567-48 Takahagi, Hidaka, Saitama 350-1213 Japan
TEL 042-978-5965 FAX 042-978-5984 (Country Code +81)
E-Mail : funa@...
HomePage :
---------------------------------------------------------------
toggle quoted message
Show quoted text
On 2025/05/28 1:34, Gary Kronk via groups.io wrote: Does anyone have easy access to this 1935 book by S. Kanda? I need someone to provide a couple of translations from this book. I am trying to confirm the correctness of a couple of translations currently at my disposal, which are conflicting with each other a bit. One comes from Kanda's book.
Sincerely,
Gary
|
Does anyone have easy access to this 1935 book by S. Kanda? I need someone to provide a couple of translations from this book. I am trying to confirm the correctness of a couple of translations currently at my disposal, which are conflicting with each other a bit. One comes from Kanda's book.?
Sincerely, Gary
|
Hi Roberto, all, ? Astrometrica automatically gives FWHM measurements, but I usually don’t pay too much attention to these, especially since the MPC’s “Report Cometary Activity” form requests full coma diameters and specifically states “not FWHM.” ? I took an additional set of images last night, coincidentally at almost exactly the same time as Jordi’s image that he posted. The appearance on my images is very similar to the appearance on his, i.e., condensed, but slightly and definitely diffuse. I’ve now reported it to the MPC as “definitely cometary,” and I see that it has now been moved to the PCCP. ? As Maik has pointed out, the orbit looks reasonably solid now. It’s not quite as “interesting” as some of the initial orbits, but still looks pretty good. The big question, as he states, is whether or not it will survive a perihelion passage this close to the sun. Hopefully it will undergo an upsurge in activity as it approaches perihelion, and perhaps it might turn out to be “old” in the Oort sense; if all this happens, then we northerners might still be in for perhaps a somewhat decent show, although probably not any kind of “Great Comet.” ? Sincerely, Alan ? Have you tried calculating the FWHM of the object and that of the
|
Based on this orbit (thanks Maik) I note on June 1.0UT this comet passes just 70" from 12th mag gx NGC 7280: Nice photo op :)
On Monday 26 May 2025 at 15:58:45 IST, Maik Meyer <maik@...> wrote:
All,
despite the short arc the orbit seems already established well enough for planning purposes.
Orbital elements:? A11nyuL
? ? Perihelion 2025 Oct 4.95827 +/- 2.35 TT;? Constraint: e=1? ? Meyer
Epoch 2025 May 26.0 TT = JDT 2460821.5? Earth MOID: 0.1282? Ve: 0.0137
q? 0.35863235 +/- 0.0167? ? ? ? ? Me: 0.0874
H? 13.36 G 0.15? ? ? ? ? ? ? ? ? ? Peri.? 269.79921 +/- 0.9
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Node? ? 97.95374 +/- 0.19
e? 1.0 +/- 0? ? ? ? ? ? ? ? ? ? ? Incl.? 147.39993 +/- 0.28
46 of 47 observations 2025 May 24-26; mean residual 0".37
However, given the current absolute magnitude the comet clearly falls below the Bortle survival limit, which would be at
about 9.2 mag. Of course, the absolute magnitude might be an underestimate now but I wonder it it can make up 4
magnitudes...
Even if it survives, surprises, or whatsoever, and with an absolute magnitude H10 of 9.5, the comet won't be brighter
than magnitude 6 around perihelion. Northern hemisphere seems definitely favoured and given the current drought on
visual comets I really hope that it survives... I am still fine with a 10 mag comet!
Maik
--
"One cannot discover comets lying in bed." * Lewis Swift
________________________________________________________________________
|
All,
despite the short arc the orbit seems already established well enough for planning purposes.
Orbital elements: A11nyuL
Perihelion 2025 Oct 4.95827 +/- 2.35 TT; Constraint: e=1 Meyer
Epoch 2025 May 26.0 TT = JDT 2460821.5 Earth MOID: 0.1282 Ve: 0.0137
q 0.35863235 +/- 0.0167 Me: 0.0874
H 13.36 G 0.15 Peri. 269.79921 +/- 0.9
Node 97.95374 +/- 0.19
e 1.0 +/- 0 Incl. 147.39993 +/- 0.28
46 of 47 observations 2025 May 24-26; mean residual 0".37
However, given the current absolute magnitude the comet clearly falls below the Bortle survival limit, which would be at about 9.2 mag. Of course, the absolute magnitude might be an underestimate now but I wonder it it can make up 4 magnitudes...
Even if it survives, surprises, or whatsoever, and with an absolute magnitude H10 of 9.5, the comet won't be brighter than magnitude 6 around perihelion. Northern hemisphere seems definitely favoured and given the current drought on visual comets I really hope that it survives... I am still fine with a 10 mag comet!
Maik
--
"One cannot discover comets lying in bed." * Lewis Swift
________________________________________________________________________
|
Re: 2025FL14 possible comet?
Dear Artyom, Of course my higher magnitude detected (only about 0.8/0.9mag.), as you say, could easily be due to rotation or low SNR. For the fwhm it is not possible that it is due to motion since I have added it to the real motion of the object via Astrometrica. However I hope that someone else will try it in this period since it is close to perihelion. Regards, Roberto Haver On Mon, 26 May 2025 14:17:55 +0300 "Artyom Novichonok via groups.io" <artnovich@...> wrote: Dear Roberto,
Thank you for the information.
****
In an attempt to detect possible cometary activity, I have observed 2025 FL14 with the 1.0 m Simeiz telescope on 15 May.
For 36 minutes of total exposure I saw 2025 FL14 as just a definitely stellar object with a predicted mag of about 20.6V (the image in the attachment).
I think the wider FWHM of the object in your images may be due to the motion shift of the 2025 FL14. A higher magnitude would be more intriguing, but rotational variability or estimation error could still be the cause.
Nevertheless, I will try to carefully observe 2025 FL14 again in June, close to its perihelion.
Best regards,
Artyom.
|
 Hi all,
Early this morning I scheduled the observation of this possible comet from L81, a coma of about 8" is visible. The FWHM is higher than that of the stars, almost double. Missatge de Roberto via <me3540= [email protected]> del dia dl., 26 de maig 2025 a les 11:52:
Hi Alan,
Have you tried calculating the FWHM of the object and that of the
nearby stars?
Reagards,
Roberto Haver
157 Frasso Sabino
On Sun, 25 May 2025 15:27:59 -0600
? "Alan Hale" <ahale@...> wrote:
> Dear all,
>
>
>
> Here is one of the images I obtained last night from LCO-SAAO.
>180-second exposure with a 35-cm Cassegrain; cropped, but otherwise
>no processing.
>
>
>
> I have another set of images ordered up for tonight.
>
>
>
>
>
> Sincerely,
>
> Alan
>
>
>
> Dear Krisztian, Med, all,
>
>
>
> It’s still quite early in the game, but, indeed, this object does
>look interesting. There does seem to be some similarity to the orbit
>of the Daylight Comet of 1910, although the difference in the
>ascending node (as of right now, anyway), would seem to preclude a
>relationship. But, we’ll see what the future holds . . .
>
>
>
> I succeeded in getting some images last night via LCO-SAAO. The
>appearance is almost stellar, although it does seem to be slightly
>diffuse when compared with stars of similar brightness. I’ve reported
>it to the MPC (and CBAT) as a “possible” comet.
>
>
>
> If something like the present orbit holds, the post-perihelion
>viewing geometry (when there would likely be the most dust tail
>development) favors the northern hemisphere. For a while, the phase
>angle is somewhat high, so possibly some dust tail (if there is one)
>enhancement from forward scattering. And – yea! – it’s in the evening
>sky. On the other hand, with this small a perihelion distance, it
>would have to survive perihelion to put on any kind of show, and that
>is always problematical.
>
>
>
> Again, we’ll just have to wait and see. I’ll probably try imaging it
>again in a day or so.
>
>
>
>
>
> Sincerely,
>
> Alan
>
>
>
> Hello all ,
>
>
>
> I know it's still too early to ask this, as the data is still
>uncertain, and I might be overstepping into something I don't fully
>understand, but I just realized that this object shares almost the
>same orbital elements with the Great Comet of 1910. Can you please
>confirm this?
>
>
>
> Thanks,
>
> Med
>
>
>
>
>
> On Sun, May 25, 2025, 10:23 Sárneczky Krisztián via
><siraly74=[email protected]> wrote:
>
> Hi Folks,
>
>
>
> What do you think about NEOCP object A11nyuL, which is a possible
>small perihelion distance comet?
>
>
>
> Thanks,
>
> Krisztián
>
>
>
>
>
>
>
>
|
Re: 2025FL14 possible comet?
Dear Roberto,
Thank you for the information.
****
In an attempt to detect possible cometary activity, I have observed?2025 FL14?with the 1.0 m Simeiz telescope on 15 May.
For 36 minutes of total exposure I saw 2025 FL14 as just a definitely stellar object with a predicted mag of about 20.6V (the image in the attachment).
I think the wider FWHM of the object in your images may be due to the motion shift of the 2025 FL14. A higher magnitude would be more intriguing, but rotational variability or estimation error could still be the cause.
Nevertheless, I will try to carefully observe 2025 FL14 again in June, close to its perihelion.
Best regards,
Artyom.
|
Re: 2025FL14 possible comet?
The image is strangely not visible. I attach it again and sorry.
Regards,
Roberto Haver
157 Frasso Sabino
toggle quoted message
Show quoted text
----- Original Message ----- From: "Roberto via groups.io" <me3540@...> To: < [email protected]> Sent: Monday, May 26, 2025 12:38 PM Subject: [comets-ml] 2025FL14 possible comet? Hi all, I took this NEO (2025 FL14) on the night between May 24th and 25th (21h10m42s UT of the 24th) from the Frasso Sabino observatory. They were 40x90s with a 368mm telescope at F/6.8 (in the image the scale is 1".24/pixel north at the top and east at the left, 21'.6x32'.3 the framed field). The fwhm of the nearby stars is on average 4".08 with an error of +-4% (the other stars were between 3".91 and 4".25) and the NEO was 4".64 so with a difference of about 15%. There is little difference and this makes me doubt. However, I also detected C/2024 PN7 with a fwhm of about 15% greater than the stars, which was then confirmed to be a comet. I hope someone can observe it to have a confirmation or denial. Consider that the mag. in theory is around 20.6, which I detected instead of 19.7 as a whole (if I consider only the part of the "nucleus" I have values ??of 20.3 and 20.6 in the 2 positions I sent). Furthermore, if you check the orbit, it is of the cometary type (Tisserand about 2.9) but this does not mean that it is. Furthermore, the perihelion is still a few days away and its elongation is good. I sent the MPC a message regarding this object and its possibility of being a comet. I attach the image of the object. That large bright spot curved toward the upper right corner is probably due to Arcturus which was located just over 4° from the center of my field. Regards, Roberto Haver 157 Frasso Sabino
|
Hi all,
I took this NEO (2025 FL14) on the night between May 24th and 25th (21h10m42s UT of the 24th) from the Frasso Sabino observatory. They were 40x90s with a 368mm telescope at F/6.8 (in the image the scale is 1".24/pixel north at the top and east at the left, 21'.6x32'.3 the framed field).
The fwhm of the nearby stars is on average 4".08 with an error of +-4% (the other stars were between 3".91 and 4".25) and the NEO was 4".64 so with a difference of about 15%.
There is little difference and this makes me doubt. However, I also detected C/2024 PN7 with a fwhm of about 15% greater than the stars, which was then confirmed to be a comet.
I hope someone can observe it to have a confirmation or denial. Consider that the mag. in theory is around 20.6, which I detected instead of 19.7 as a whole (if I consider only the part of the "nucleus" I have values ??of 20.3 and 20.6 in the 2 positions I sent).
Furthermore, if you check the orbit, it is of the cometary type (Tisserand about 2.9) but this does not mean that it is. Furthermore, the perihelion is still a few days away and its elongation is good.
I sent the MPC a message regarding this object and its possibility of being a comet.
I attach the image of the object.
That large bright spot curved toward the upper right corner is probably due to Arcturus which was located just over 4° from the center of my field.
Regards,
Roberto Haver
157 Frasso Sabino
|
Hi Alan, Have you tried calculating the FWHM of the object and that of the nearby stars? Reagards, Roberto Haver 157 Frasso Sabino On Sun, 25 May 2025 15:27:59 -0600 "Alan Hale" <ahale@...> wrote: Dear all,
Here is one of the images I obtained last night from LCO-SAAO. 180-second exposure with a 35-cm Cassegrain; cropped, but otherwise no processing.
I have another set of images ordered up for tonight.
Sincerely,
Alan
Dear Krisztian, Med, all,
It’s still quite early in the game, but, indeed, this object does look interesting. There does seem to be some similarity to the orbit of the Daylight Comet of 1910, although the difference in the ascending node (as of right now, anyway), would seem to preclude a relationship. But, we’ll see what the future holds . . . I succeeded in getting some images last night via LCO-SAAO. The appearance is almost stellar, although it does seem to be slightly diffuse when compared with stars of similar brightness. I’ve reported it to the MPC (and CBAT) as a “possible” comet.
If something like the present orbit holds, the post-perihelion viewing geometry (when there would likely be the most dust tail development) favors the northern hemisphere. For a while, the phase angle is somewhat high, so possibly some dust tail (if there is one) enhancement from forward scattering. And – yea! – it’s in the evening sky. On the other hand, with this small a perihelion distance, it would have to survive perihelion to put on any kind of show, and that is always problematical.
Again, we’ll just have to wait and see. I’ll probably try imaging it again in a day or so.
Sincerely,
Alan
Hello all ,
I know it's still too early to ask this, as the data is still uncertain, and I might be overstepping into something I don't fully understand, but I just realized that this object shares almost the same orbital elements with the Great Comet of 1910. Can you please confirm this?
Thanks,
Med
On Sun, May 25, 2025, 10:23 Sárneczky Krisztián via groups.io <siraly74@...> wrote:
Hi Folks,
What do you think about NEOCP object A11nyuL, which is a possible small perihelion distance comet?
Thanks, Krisztián
|
David Moore(Ireland)
