UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km |
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4 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : 558bad34-c091-4c71-88aa-2bf733b1d43f [observed]
Occultation Date + Time : 2010-08-27 at 21:41:12 UT +/- 0.02 min [1]
Object Designation : (24) Themis
Orbit Class : MBA
Star Designation : GDR3 6771443239852093056
Star Coordinates (ICRF) : RA = 19 32 43.1838, DE = -22 43 41.303 [2]
Star Magnitudes : G = 13.43 mag, RP = 12.91 mag, BP = 13.78 mag
Object Magnitude : V = 12.79 mag
Estimated Magnitude Drop : 0.5 mag
Estimated Max. Duration : 18.6 sec
Object Mean Diameter : 121 km (src: astorb)
Speed of the shadow : 6.5 km/s
Elongation to Moon & Sun : 78° (sunlit = 91%), Sun = 137°
Cross-track uncertainty : 1.3 mas = 2 km = 0.02 path-width (1-sig)
RUWE and duplicate source : 1.79 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#140
Object is a Gaia mass determination target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0