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Doug that is amazing! We obtained 2.0-m multi-filter images from LCO just 4 minutes before the strong outburst kicked off. Here are our Cousins-R measurements from the r-filter images obtained by the

I've just measured an image from T70 in Chile (135mm FL lens) taken this morning at 2025-01-03T08:43:24 and the comet is now saturated in a 10s exposure. I get mag 3.0 but this will be an

I caught it going into outburst last night. This is the data from my 16 inch RC. I also have data from my RASAs to look at yet. This is what I got stacking 10x30sec exposures, so at about 5 min

Dear All, As reported by Wayne Hawley , 29P is in outburst. My observation from past night shows a very high Afrho value [cid:da52161f-abed-4f7a-8889-e0276be241a0] ________________________________

Hi Terry and all, My observation made earlier the same day using a remote T75 telescope in Chile didn't show anything suspicious. Just a regular brightening. Magnitude 4.7. Comet C/2024 G3 (ATLAS)

I just got back from observing C/2024 G3 from a nearby bayside location in Brisbane.? This comet has been very elusive visually in 50mm binoculars due to its low elevation in twilight, but this

Alan, "A significant factor in my decision to “semi-retire” lies in the fact that I’ve been hanging around longer and longer, and age, unfortunately, is starting to take its toll ... ...that I

[re-send . . . I proofread this several times before sending . . . and still . . . ] Dear all, Many of you may remember that, a little over three years ago, I announced that I was “semi-retiring”

Dear all, Many of you may remember that, a little over three years ago, I announced that I was “semi-retiring” from visual comet observing, At that time I wasn’t entirely sure what I meant by

(Raises hand) I gotta admit, I'm currently the bottleneck. There has been quite a bit of back-and-forth between me, Karl, MPC, Dan Green, and a few others on this. We've actually made a decent bit of

Ok, thank you for these explanations. Adrien [email protected]> a écrit :

Maik is entirely correct here. Producing orbits for SOHO (STEREO, PSP...) comets is easy. Producing orbits that are *realistic* is absolutely NOT easy. Anyone can test this by placing short-arc SOHO

Adrein, my experience is that with these extremely short arcs you'll often need manual interefence to make the solution converge. For instance you would fix e to 1 but also i to e.g. 142° for the

For the measurements, sure somebody has to do it (it is certainly more complex than the more usual ground-based asteroid or even comet observations), but for orbit determination, if there are enough

It is my understanding that a very large number is ready to be announced. I do not know where the bottleneck is, maybe Bill Gray or Karl Battams are able to enlighten us. In the end you need to

Hi, Please people correct me if I'm wrong, but I think that the MPC initially decided to designate only the comets with a large enough number of observations for the orbit to be constrained well

Why don't do SOHO comets receive MPC names after 2010? (C/YYYY {letter}{number})

Statistically speaking, a small percent of the low and high magnitude estimates should be thrown out and what one has left is usually the comets magnitude within the error of our visual or electronic

Dear all, @Peter, Alan, Michael: Thanks for your effort in detecting and confirming the faint extended coma. @Jakub: Thank you for appreciating my work. I'd like to share my latest results:

Dear All, My observation of C/2023 Q1 PANSTARRS: https://www.astronomie.be/pieterjan.dekelver/Observations/2024/20241228_1749_CK23Q010_M09_FINAL.jpg I could not see any dense coma, but the sky was