UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km |
More
2 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : c970e3dd-f485-4268-b8ec-02a90e066fae [observed]
Occultation Date + Time : 1999-08-03 at 02:36:45 UT +/- 0.02 min [1]
Object Designation : (24) Themis
Orbit Class : MBA
Star Designation : GDR3 6854216747231397632
Star Coordinates (ICRF) : RA = 20 11 20.4117, DE = -21 06 29.913 [2]
Star Magnitudes : G = 10.29 mag, RP = 9.54 mag, BP = 10.91 mag
Object Magnitude : V = 12.27 mag
Estimated Magnitude Drop : 2.1 mag
Estimated Max. Duration : 8.7 sec
Object Mean Diameter : 121 km (src: astorb)
Speed of the shadow : 14.0 km/s
Elongation to Moon & Sun : 79° (sunlit = 68%), Sun = 170°
Cross-track uncertainty : 2.7 mas = 4 km = 0.04 path-width (1-sig)
RUWE and duplicate source : 1.16 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