2012年3月最亮柯伊伯带天体掩星事件摘要
本帖最后由 q零度星系 于 2012-3-2 17:43 编辑2012年3月最亮柯伊伯带天体掩星事件摘要
1.2002TX300掩星
2.亡神星掩星
2012-03-21http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Orcus_2012/Orcus_2012-03-21T22h44m18s.jpg
3.创神星掩星：
2012-03-01http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Quaoar_2012/Quaoar_2012-03-01T14h50m27s.jpg2012-03-02http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Quaoar_2012/Quaoar_2012-03-02T07h10m30s.jpg
2012-03-03http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Quaoar_2012/Quaoar_2012-03-03T20h11m57s.jpg2012-03-13http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Quaoar_2012/Quaoar_2012-03-13T08h28m32s.jpg2012-03-13http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Quaoar_2012/Quaoar_2012-03-13T20h00m44s.jpg
2012-03-14http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Quaoar_2012/Quaoar_2012-03-14T03h13m06s.jpg2012-03-16http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Quaoar_2012/Quaoar_2012-03-16T19h50m53s.jpg2012-03-30http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Quaoar_2012/Quaoar_2012-03-30T04h27m51s.jpg
4.妊神星掩星
2012-03-11http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Haumea_2012/Haumea_2012-03-11T19h07m38s.jpg
5.伐楼拿Varuna 掩星
2012-03-31http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Varuna_2012/Varuna_2012-03-31T07h14m03s.jpg2012-03-31http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Varuna_2012/Varuna_2012-03-31T21h40m31s.jpg
6.伊克西翁Ixion掩星
2012-03-03http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Ixion_2012/Ixion_2012-03-03T23h22m03s.jpg2012-03-10http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Ixion_2012/Ixion_2012-03-10T19h31m19s.jpg2012-03-19http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Ixion_2012/Ixion_2012-03-19T09h30m43s.jpg
2012-03-22http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Ixion_2012/Ixion_2012-03-22T22h56m46s.jpg2012-03-26http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Ixion_2012/Ixion_2012-03-26T21h46m28s.jpg2012-03-27http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Ixion_2012/Ixion_2012-03-27T16h55m06s.jpg
2012-03-28http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Ixion_2012/Ixion_2012-03-28T19h17m27s.jpg2012-03-30http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Ixion_2012/Ixion_2012-03-30T06h41m15s.jpg2012-03-30http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/Ixion_2012/Ixion_2012-03-30T17h01m03s.jpg
7.2003AZ84掩星
2012-03-03http://www.lesia.obspm.fr/perso/bruno-sicardy/predic_occn_12/2003AZ84_2012/2003_AZ84_2012-03-03T20h55m21s.jpg
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
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
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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: 2entries
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)
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