The Spitzer space telescope showed the existence of two asteroid belts around Epsilon Eridani, a star a little smaller than the Sun, only 850 million years...
While imaging M74 last night, I found two minor planets traversing the field of view. Using The Sky software I was able to determine that they were 8000 Isaac...
Space junk? Lunar ejecta? Aero-braked asteroids?...
gpobs
gpobs@...
Nov 3, 2008 2:40 pm
21286
... For UC202, probably none of the above. v_infinity is around 4.4 km/sec, well above the lower limit for plausibly natural objects. UA202 has v_infinity of...
Alan Harris wrote: "...For UC202, probably none of the above." The inclination is what can tip one off to this object having a high v_infinity. Any object...
Hi George, Sorry, I should have mentioned that this was a _radial_ velocity. In this case, almost all the velocity was radial; the object had "gone past"...
http://neo.jpl.nasa.gov/news/2008tc3.html Asteroid 2008 TC3 Strikes Earth: Predictions and Observations Agree Steve Chesley, Paul Chodas, and Don Yeomans ...
Ron Baalke
baalke@...
Nov 5, 2008 1:14 am
21290
Everyone, 2008 EV5 will be the target of Arecibo and Goldstone radar observations in the third and fourth week of December. However, the uncertainty in its...
All, A new, intermediate release of the Asteroid Lightcurve Database (LCDB) that Alan Harris, Petr Pravec, and I maintain is available on the CALL site. ...
Since nobody mentioned it, I do : http://apod.nasa.gov/apod/astropix.html Amusing to think of the trails left on our images, then the trail left in the...
List members, Since about 23:30 UT Nov 8, I have been unable to get the MPC website. Access to other nearby sites on the harvard.edu domain like the Chandra...
Yes, apparently the CfA sites are having problems. The mirror site allows access to all the MPC tools. Richard ... -- Richard Kowalski Catalina Sky Survey ...
Last September I had no problem taking images of my namesake, 4099 Wiggins. It was bright enough to easily show up in a 60" exposure. Two nights ago using the...
Patrick, ... Last September I had no problem taking images of my namesake, 4099 Wiggins. It was bright enough to easily show up in a 60" exposure. Two nights...
A month after asteroid 2008 TC3 hit the Earth's atmosphere, the first ground-based image of the event has surfaced on the Internet. Admittedly, it's not the...
In an all night CCD photometry session on a single asteroid, it frequently happens that the target magnitude is up to 0.02 fainter for the first one to two...
... This problem can arise with German mounts where there is a shortcoming with your flatfield image so that after the telescope crosses the meridian there is...
Frederick: Some of this can be due to the natural fading or brightening of the asteroid over the session due to changing geometry - it's getting closer or...
Richard brings up the excellent second point of using comps that are not of the same color or not well-distributed in the field. I make sure to select comps on...
Hello all, When an asteroid was discovered last time using 8-cm or smaller telescope? And who were its discoverers? Is there any statistics regarding this? ...
I agree this is almost certainly a differential extinction problem caused by having comp stars of color markedly different from asteroids. You can use VizieR...
Brian Skiff
bas@...
Nov 10, 2008 6:47 pm
21306
I thank Richard Miles, Brian Warner, and Brian Skiff for helpful suggestions, particularly that changes in instrumental magnitudes over and above natural...
VizieR itself is at: http://webviz.u-strasbg.fr/viz-bin/VizieR SDSS DR6 is item II/282, and Carlsberg 14 is I/304. It is easy simply to key-in a position and...
Brian Skiff
bas@...
Nov 10, 2008 7:51 pm
21308
That's an odd-looking trail topology: closed loops, straight lines, earlier sections "joined" to later sections, with the trail maintaining a uniform thinness...
... I've seen a similar trail some 35 years ago from a daylight fireball. A couple of hours later the trail looked just like that in the evening twilight. ...
Robert McNaught
rmn@...
Nov 10, 2008 8:16 pm
21310
Hi All, Wondered if I could hijack the photometry topic and ask a photometric calibration question. I'm looking for a sanity check on my computation of the...
Two possible approaches: 1) Dig into the early IJHKLM... photometry by Harold Johnson et al for bright stars; find several close solar analogues (use more ...
Brian Skiff
bas@...
Nov 10, 2008 8:57 pm
21312
Hi there, Has anyone seen the video that was taken? That would be interesting wouldn't it? Best Regards Alan In message...
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