Gidday all, My view of Phaethon passing through perihelion. kind regards, Alan Just follow this link to see the video: ...
973
algwat
Jul 10, 2009 4:02 am
Comet - 116P WILD - F.Y.I rgds Alan (0,0) Upleft image pix vlaue x y slice 1 200907:20090707_000901_s4h1A 20.4939 116 495 1 2...
972
Ian Musgrave & Peta O...
ianfmusgrave
Jul 5, 2009 2:43 pm
G'Day All ... Meh! I've been banging my head against photometry for this thing and I just cant do it, the image brightness is to variable, even my comparison...
971
Dimitry Chestnov
astroched
Jul 4, 2009 9:27 am
... In IAUC 9054, Karl noted "a very short radial elongation (perpendicular to the direction of motion) that was possibly a line-of-sight effect related to its...
970
Ian Musgrave & Peta O...
ianfmusgrave
Jul 4, 2009 9:15 am
G'Day All ... It may be am illusion, but Paeton seems a bit more extended than I would expect for its supposed brightness. Hint of a tail or just smeared...
969
Ian Musgrave & Peta O...
ianfmusgrave
Jul 4, 2009 8:41 am
G'Day All ... In the H1A images Phaeton is deep within coronal ejections. I'm not sure how it's possible to do photometery under these circumstances (even if I...
968
Alan Watson
algwat
Jul 4, 2009 7:57 am
sorry "Dimitry" ...m.....ummmmm rgds al ... From: Alan Watson To: stereohunter@yahoogroups.com Sent: Saturday, July 04, 2009 5:54 PM Subject: Re:...
967
Alan Watson
algwat
Jul 4, 2009 7:54 am
Gidday Diitry , some further info for you. ... Some positions in Stereo Hi1B, too hard to detect after these. (0,0) Upleft image pixvalue x y slie 17...
966
Dimitry Chestnov
astroched
Jul 4, 2009 5:07 am
Simultaneous observations from both STEREO spacecraft may help us to know is this brightness caused by phase effect (asteroid behaviour) or not (comet...
965
Dimitry Chestnov
astroched
Jul 3, 2009 1:02 pm
... Sorry, I made a mistake in my previous message. I used geocentric ephemeris magnitudes instead of STEREO-centric. Correct ephemeris magnitudes according to...
964
Dimitry Chestnov
astroched
Jul 2, 2009 6:11 pm
Hi all, When I found out what tells IAUC 9054, I plotted a light curve of Phaethon using Seiichi Yoshida's software "Comet for Windows". The light curve...
963
Alan Watson
algwat
Jun 20, 2009 1:14 pm
Gidday Ian, Looks like it will be in Stereo-A and Stereo-B in images of the 20-22nd and a few days more. ... Perhaps a good CME hit would have an effect.? Kind...
962
Ian Musgrave & Peta O...
ianfmusgrave
Jun 20, 2009 12:50 pm
G'Day All ... Hmm, a whole lot of negative. According to me Perihelion for Phaeton is roughly the 21st, so we should be vigilant over these next few days. ...
961
Karl Battams
karlbattams
Jun 20, 2009 12:19 pm
Alan, This is pretty cool! Thanks for pointing it out! I'll definitely follow it. I meant to tell everyone that our websites will probably be down all...
960
Alan Watson
algwat
Jun 20, 2009 9:09 am
Thanks Ian, Here is another interesting link about this asteroid from Seiichi Yoshida web site. http://www.aerith.net/astro/Phaethon-dust-trail.html kind...
959
Ian Musgrave & Peta O...
ianfmusgrave
Jun 20, 2009 7:19 am
G'Day All ... Also from Wikipedia "Phaethon's attributes can be argued as being cometary, except that Phaethon has never been observed exhibiting a coma, gas...
958
algwat
Jun 20, 2009 4:25 am
Gidday All, I had sent this(see below) to karl before I had checked it further with Starry Night astroids. This looks like a good ooprtuinty ot watch this...
957
Dimitry Chestnov
astroched
Jun 9, 2009 8:17 am
The page containing orbital elements of all SOHO and STEREO comets has been moved to http://astro.21ball.ru/comet/soho.html...
956
Alan Watson
algwat
Jun 6, 2009 6:38 am
F.Y.I rgds Alan C/2008 Q3 Garrad (0,0) Uplft image pixvalue x y slice 1 200906:20090601_080921_s4h2A 55.0636 12 869 5 2 200906:20090601_120921_s4h2A...
955
Ian Musgrave & Peta O...
ianfmusgrave
May 24, 2009 2:37 am
G'Day All ... [487] Venetia is the brightest asteroid close to this position, using SkyMap and H1a asteroid positions from JPL-Horizons. Nice area, just next...
954
Alan Watson
algwat
May 23, 2009 4:51 am
No not this, (40) Harmonia . I have updated the Starry night asteroid data from the Lowell.edu astorb.dat file. Many more asteroids are now being indicated....
953
Alan Watson
algwat
May 22, 2009 10:26 am
On the assumption the the HI1a imager can see fuzzy's like 29P/Schwassmann-Wachmann which is near by the Boethin position. I have been having a good look for...
952
Alan Watson
algwat
May 15, 2009 11:09 pm
Gidday all, postions between stars, rgds Alan 29P/Schwassmann-Wachmann (0,0)upleft image pix value X Y Slice 1...
951
Ian Musgrave & Peta O...
ianfmusgrave
May 13, 2009 9:32 pm
G'Day All ... Thanks, I just needed that (rolls eyes) Cheers! Ian ====================================================== Ian Musgrave Peta O'Donohue, Jack...
950
Alan Watson
algwat
May 13, 2009 12:07 pm
Gidday all, here is a difficult one that you can work on, rgds Alan (0,0)upleft image pixvalue x y slice 1 200905:20090509_112901_s4h1A 15.9687 182 166...
949
Wentao Xu
wentaopachacoti
May 12, 2009 5:16 am
Thanks Alan. I totally forgot that Lulin's orbital plane is almost the same as the earth's......
948
Alan Watson
algwat
May 11, 2009 9:34 am
Gidday Wentao, You have Cardinal, lulin is moving very horizontal. Load images that are 4 or six hours apart and try to align the stars. Kind regards, Alan....
947
Wentao Xu
wentaopachacoti
May 11, 2009 8:42 am
Hi all, I've made an animation of Comet Lulin here: http://comethunter.lamost.org/secchi/CK07N030_HI1a.gif Hope u could like it! I'll try to do astrometry with...
946
Alan Watson
algwat
May 8, 2009 11:13 am
gidday All, Lulin C/2007 N3 again in HI1a moving slowly. rgds Alan (0,0) Upleft image pixvalue x y slice 1...
945
Ian Musgrave & Peta O...
ianfmusgrave
May 1, 2009 11:14 am
G'Day All ... Nice catch! But it's pretty dim for an comet that is supposedly magnitude 8! No wonder I couldn't find it. Cheers! Ian ...
