Images of 73P-M/N, and possible new complex fragments.
Hello all,
Here shows two images of fragment M and N, and a possible new complex fragments. All images are photographed by the Lulin One-meter Telescope (LOT), on 180 seconds x 4 each.
full pixel at http://ccn.lamost.org/test/73p_flagment_2.jpg
This is the image on April 4, fragment M could be seen. And on northwest we detect a new fragment, the seeing was very good that night, we found the new fragment might be a double one.
QY6455H 1C2006 04 04.64763 14 31 34.227+22 07 38.26 21.33R D35
QY6455H 1C2006 04 04.65061 14 31 34.373+22 07 39.63 21.74R D35
QY6455H 1C2006 04 04.65358 14 31 34.594+22 07 44.17 21.60R D35
QY6455H 1C2006 04 04.65655 14 31 34.885+22 07 47.71 21.97R D35
QY6455I 1C2006 04 04.64763 14 31 34.650+22 07 37.14 21.65R D35
QY6455I 1C2006 04 04.65061 14 31 34.744+22 07 41.25 21.88R D35
QY6455I 1C2006 04 04.65358 14 31 35.021+22 07 45.12 21.80R D35
full pixel at http://ccn.lamost.org/test/73p_flagment_3.GIF
And here is the image of April 7, we could detect fragment M and N, but the possible fragment detected on April 4 was not recovered. Instead, on southeast of fragment M we detect another new fragment.
QY64846 1C2006 04 07.62041 14 35 48.058+23 10 01.76 20.52R D35
QY64846 1C2006 04 07.62329 14 35 48.108+23 10 03.18 20.30R D35
QY64846 1C2006 04 07.62626 14 35 48.435+23 10 08.78 19.92R D35
QY64846 1C2006 04 07.62926 14 35 48.724+23 10 12.18 20.23R D35
I have checked the observations from Mt.Lemmon, none of the above two fragments are found on April 2, but in the observations of April 7 I found this object, which is undesigned too:
6GC355F C2006 04 07.46400 14 35 21.86 +23 07 44.6 20.4 V G96
6GC355F C2006 04 07.47123 14 35 22.28 +23 07 55.3 G96
6GC355F C2006 04 07.47855 14 35 23.00 +23 08 05.1 G96
6GC355F C2006 04 07.48586 14 35 23.46 +23 08 13.3 G96
Orbit calculations showed the three objects are quite complex. If QY6455H/I = QY64846, this fragment's orbit would be:
QY6455H
Perihelion 2006 Jun 7.954565 TT
Epoch 2006 Apr 8.0 TT = JDT 2453833.5 Ye
M 342.84722 (2000.0) P Q
n 0.28140259 Peri. 215.24150 0.02115394 0.98502569
a 2.3063080 Node 56.55703 -0.86376467 0.10418800
e 0.6147198 Incl. 11.83270 -0.50345118 -0.13736533
P 3.50 H 22.0 G 0.15 q 0.8885747
From 7 observations 2006 Apr. 4-7; RMS error 1.195 arcseconds
But if QY6455H/I = 6GC355F (I trend to believe this linkage), we could still get a reasonable orbit (though, not as good as the above linkage):
QY6455H
Perihelion 2006 Jun 7.684741 TT
Epoch 2006 Apr 7.0 TT = JDT 2453832.5 Ye
M 337.50455 (2000.0) P Q
n 0.36468403 Peri. 233.95758 0.11289585 0.98038796
a 1.9402523 Node 43.42310 -0.81920559 0.18384256
e 0.5785913 Incl. 13.59178 -0.56227815 -0.07100244
P 2.70 /987.14d H 22.9 G 0.15 q 0.8176391
From 7 observations 2006 Apr. 4-7; RMS error 1.041 arcseconds
So I'm quite confuse about which is right. I will try to do a third-night observation as soon as possible, but now seems Lulin is going to experience several cloudy nights. Could anyone do a confirmation for this object?
Regards,
Quanzhi
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本文发表于2006 April 9 19:36,归类为叶夜速写。您可以通过RSS 2.0来订阅有关的评论。 您也可以留下评论或在您自己的站点跟踪引用。 This entry was posted on 2006 April 9 at 19:36 and filed under 叶夜速写. Follow any responses to this post through RSS 2.0. You can leave a response or trackback from your own site. |
约7年前 about 7 years ago
Could you make an animation?