Some of you might have noticed an unusually bright object 04F0011 on NEOCP.
Although on discovery images we didn't see any coma, my only reasonable
explanation of this is a comet in outburst. According to some high accuracy
photometry just published on NEOCP, this object is also brightening
rapidly. So, apart from astrometry, I think it would be very useful to get
some deep, high resolution images as well as spectra and photometry of this
object. I asked some astronomers on La Palma, but the weather is not very
promising here. Thank you.
Jure Skvarč
[Non-text portions of this message have been removed]
Some of you might have noticed an unusually bright object 04F0011 on NEOCP. Although on discovery images we didn't see any coma, my only reasonable explanation...
Telescope: 2.0-m Faulkes Telescope South (f/10.0 Ritchey-Chretien + CCD) Observing window: 2010 Apr 16 12:02-12:27 UT Total of 13 images made in 1.5 arcsec...
Further to my earlier report, I can now report observations of object 04F0011 in three color indices measured on 2010 Apr 16.51 as follows: g'-r'=0.503 ...
... More importantly, can you rule out that the colors resemble an asteroid? That is, are the colors of a cometary dust coma unique?...
Dave Tholen
tholen@...
Apr 16, 2010 7:28 pm
... That's well within the range of possible rotational variation. Be careful interpreting peak pixel values. If two stellar sources of identical brightness...
Dave Tholen
tholen@...
Apr 16, 2010 7:26 pm
Dave, This object appears to be non-asteroidal in nature. The image is definitely well-oversampled in the 2.0-m FTS images given the 0.28 arcsec pixel size ...
With all of these confirming observations and with the incredible uncertainty of this object, why has it not been placed on the MPC NEO objects? Asteroidal or...
Make that: "An MPEC needs to be issued on this target......" Clay _____ Dr. P. Clay Sherrod Arkansas Sky Observatories MPC H45 - Petit Jean Mountain South MPC...
Hi Clay, ... I'm curious: why do you think so? MPC should hold off, in my humble opinion (and I suspect theirs, though I don't really know), until there's...
... If the comet reports they have received so far are not conclusive enough, what is their choice? To announce a H=8.7 asteroid discovery in the Inner...
Jure and list, ... May I propose to carefully check all image sets for a possible faint second object moving at the same rate and close to the biggie? ...
I forgot... ... And good luck that there ain't some old identifiable ONS. The dark force is strong... ;-) Anyone tried this one visually? Could be a...
Hello Reiner and all. ... If it's indeed an outburst (as I suspect, too) it might have an internal (to the comet) origin, like what happens to other...
Dear Jure ... Here you can see our follow-up image of this object (more details are on the image): http://bit.ly/aNRhZJ Ciao, Ernesto Guido & Giovanni Sostero ...
I see on the NEOCP observations tally for this object that some stations have added a "K" flag to their observations. Are you guys sure about that? :-) ...
In our initial MPC subissions for 04F0011 from H01, I reported this object as cometary. Although I read Jure's initial MPML message before going to sleep, I...
Many thanks to everybody who promptly jumped in and helped to characterise early stages of the outburst of this object. I hope you had a lot of fun and...
... Also notice that in the MPEC it says "Observations:". If the object would be identified to a known and already somewhere published one it would say...
Although the astrometric details are on the MPEC, the discovery "story" is on CBET 2249, presumably soon to get issued on an IAU Circular. \Brian...
Brian Skiff
bas@...
Apr 17, 2010 8:49 pm
Sure did, Jure - thanks to the Črni Vrh team for finding it. No doubt we shall have more fun with it in the future as it may prove to be a challenging and...
... Standard procedure for comets. Look at, for example, comet Garradd announced on MPEC 2010-G10. No discovery asterisk. And it wouldn't be the first time...
Dave Tholen
tholen@...
Apr 17, 2010 8:43 pm
Hi Reiner, Dave Thank you for your reassuring explanations. Yes, the other reason I was in doubt is that there was no name. So we'll see how this ends. ...
Dear Jure, indipendently from the discovery credits (the MPC will tell us whole the story, I think) congratulations for having picked-up this interesting...
Thanks Giovanni, I think your early images were the first with the hint of the cometary nature. cheers, Jure On Sat, Apr 17, 2010 at 9:47 PM, giovannisostero ...
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