本帖最后由 苍穹旋律 于 2013-1-20 00:04 编辑
先扔SkyMap的预报(实际就是MPEC的):
Ephemeris of comet C/2011 L4 PANSTARRS
日期 时间 Top R.A. Top Dec R (AU) 距离 El ? Mag
18 一月 2013 00:00:00 18h 12m 09.9s -42°53' 25" 1.2823 2.0085 31.8 8.1
19 一月 2013 00:00:00 18h 16m 11.2s -43°06' 04" 1.2635 1.9829 32.2 8.0
20 一月 2013 00:00:00 18h 20m 19.9s -43°18' 35" 1.2446 1.9572 32.5 7.9
21 一月 2013 00:00:00 18h 24m 36.3s -43°30' 56" 1.2255 1.9315 32.8 7.8
22 一月 2013 00:00:00 18h 29m 00.7s -43°43' 06" 1.2064 1.9057 33.0 7.7
23 一月 2013 00:00:00 18h 33m 33.7s -43°55' 00" 1.1872 1.8799 33.3 7.6
24 一月 2013 00:00:00 18h 38m 15.4s -44°06' 37" 1.1678 1.8541 33.5 7.5
25 一月 2013 00:00:00 18h 43m 06.5s -44°17' 53" 1.1484 1.8283 33.8 7.4
26 一月 2013 00:00:00 18h 48m 07.3s -44°28' 44" 1.1288 1.8025 34.0 7.3
27 一月 2013 00:00:00 18h 53m 18.2s -44°39' 07" 1.1092 1.7767 34.1 7.2
实际观测(邮件组的):
C/2011 L4 PANSTARRS
2013 Jan 18.30 UT: m= 8.0, Dia = 3',... DC=6/, ...7cm R (28x)...Alexandre
Amorim(Florianopolis,Brazil)[altitude 17 deg, sun altitude -13 deg]
光变曲线:
m1 = 4.0 + 5 log d + 10.0 log r [ 115, ] (2013 July 3 - )
* Gray curve is: m1 = 4.0 + 5 log d + 10.0 log r
CCD Images:
Left: 2013 Jan 16.73 UT
Canon 60Da, 5x2 minute stack. 300mm zoom lens, cropped. Globular cluster NGC 6541 is on the right.
C/2011 L4 PANSTARRS
Morris format
2013 Jan 16.73 UT; m1=7.9, Dia= 2', DC=7...25x100mm B...Michael Mattiazzo
(Castlemaine, Victoria)
求RP求RP啊!!! |