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2012年3月冥王星及卫星掩星事件摘要

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零度星系 发表于 2012-3-2 17:43 | 显示全部楼层 |阅读模式 来自: 中国–四川–攀枝花 电信

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                                2012年3月冥王星及卫星掩星事件摘要
1.冥王星掩星:

2012-03-012012-03-022012-03-03
2012-03-032012-03-032012-03-04
2012-03-052012-03-092012-03-09
2012-03-092012-03-102012-03-11
2012-03-122012-03-152012-03-18
2012-03-182012-03-192012-03-20
2012-03-202012-03-212012-03-25
2012-03-27
2.冥卫一 卡戎掩星
2012-03-01
2012-03-022012-03-032012-03-03
2012-03-032012-03-042012-03-05
2012-03-052012-03-062012-03-07
2012-03-112012-03-122012-03-13
2012-03-132012-03-152012-03-15
2012-03-152012-03-182012-03-20
2012-03-212012-03-212012-03-21
2012-03-242012-03-242012-03-25
2012-03-262012-03-27

3.冥卫二 尼克斯掩星:
2012-03-01
2012-03-022012-03-032012-03-03
2012-03-042012-03-052012-03-05
2012-03-052012-03-072012-03-10
2012-03-122012-03-172012-03-17
2012-03-212012-03-222012-03-22
2012-03-232012-03-232012-03-25
2012-03-252012-03-262012-03-28
2012-03-292012-03-302012-03-30

4.冥卫三许德拉
2012-03-012012-03-03
2012-03-032012-03-042012-03-04
2012-03-042012-03-062012-03-06
2012-03-062012-03-062012-03-07
2012-03-092012-03-092012-03-11
2012-03-152012-03-152012-03-19
2012-03-202012-03-212012-03-21
2012-03-212012-03-232012-03-26
2012-03-292012-03-292012-03-29

Notes:
C/A: geocentric closest approach, in arcsec
P/A: Planet position angle wrt to star at C/A, in deg
vel: velocity in plane of sky, in km/sec, positive= prograde, negative= retrograde
R: instrumental magnitude in UCAC2 system
J, H, K: 2MASS magnitudes (50.0 = not in 2MASS)
R*, J*, H*, K* are normalized magnitudes to a common
shadown velocity of 20 km/sec by the relationship:
Mag* = Mag_actual + 2.5*log10[velocity/20 (km/sec)]
Delta: Planet range to Earth, AU
long: East longitude of sub-planet point, deg, positive towards East
loc. t.= UT + long: local solar time at sub-planet point, hh:mm
--------------------------------------------------------------------------------------------------------------------
Selection criteria:
Maximum geocentrique closest approach considered:  0.33500000000000002       arcsec
Day light exclusion (range loc. t.): 12.0hs to 12.0 hs (t1 = t2 -> no exclusions)
List below has:            2  entries
Reference ephemeris: DE418/JPL_14                                      
Offset applied to ephemeris off_ra(mas) = A * (t-t0) + B
Offset applied to ephemeris off_de(mas) = C * (t-t0) + D
t0 =    2005.0000000000000       yrs
A =    0.0000000000000000       (mas/yr)
B =   -84.000000000000000       (mas)
C =    0.0000000000000000       (mas/yr)
D =   -53.000000000000000       (mas)
pm = proper motion applied? (ok, no)
ct = uc (UCAC2); 2m (2MASS); fs (field star)
f = multiplicity flag
0 - no multiple entries per star in astrometry
1 - single position from 2 or more uc/2m entries
2 - single position from 1 uc/2m entry only
3 - fs position from entry with more N contributions
4 - fs position from entry with best (x,y) error
5 - fs position from entry with brightest R mag.
6 - fs position from average over all entries
(see details in Assafin et al. 2009)
E_ra, E_de: error of star position (mas); (9999 = no estimation)
pmra, pmde: star proper motion (mas); (9999 = no proper motion)

当前Kp指数估计值(三小时平均),当Kp指数达到6或以上时,我国境内有可能观察到极光;当前极光活动水平,极光为9时漠河可能见极光,
预计未来24小时地磁暴最强可达级,当地磁暴级别达到G2或以上时,我国境内有可能见极光
遨游星空 发表于 2012-3-2 18:23 | 显示全部楼层 来自: 中国–广东–揭阳 中移铁通
广东可以看到不?            
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 楼主| 零度星系 发表于 2012-3-2 18:27 | 显示全部楼层 来自: 中国–四川–攀枝花 电信
遨游星空 发表于 2012-3-2 18:23
广东可以看到不?

看掩星带图
需超大口径的天文望远镜
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