UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km |
More
1 observation found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : 0bd243bc-e5a0-4877-8fb1-496ec784ea13 [observed]
Occultation Date + Time : 2020-11-20 at 22:27:33 UT +/- 0.02 min [1]
Object Designation : (25581) 1999 XD221
Orbit Class : MBA
Star Designation : GDR3 3371691370518685952
Star Coordinates (ICRF) : RA = 06 43 21.8750, DE = +19 24 23.071 [2]
Star Magnitudes : G = 14.32 mag, RP = 13.57 mag, BP = 14.91 mag
Object Magnitude : V = 17.86 mag
Estimated Magnitude Drop : 3.6 mag
Estimated Max. Duration : 1.0 sec
Object Mean Diameter : 8 km (src: astorb)
Speed of the shadow : 7.5 km/s
Elongation to Moon & Sun : 145° (sunlit = 37%), Sun = 139°
Cross-track uncertainty : 2.0 mas = 2 km = 0.39 path-width (1-sig)
RUWE and duplicate source : 0.94 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#51
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0