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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1 observation found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : 7b163fec-ff3a-4a69-ba26-072c156d9837 [observed]
Occultation Date + Time : 2022-01-15 at 20:18:26 UT +/- 0.04 min [1]
Object Designation : (22721) 1998 ST50
Orbit Class : MBA
Star Designation : GDR3 0154139680401501056
Star Coordinates (ICRF) : RA = 04 57 40.6312, DE = +27 48 09.370 [2]
Star Magnitudes : G = 14.57 mag, RP = 13.56 mag, BP = 15.62 mag
Object Magnitude : V = 18.56 mag
Estimated Magnitude Drop : 4.0 mag
Estimated Max. Duration : 0.8 sec
Object Mean Diameter : 6 km (src: astorb)
Speed of the shadow : 7.5 km/s
Elongation to Moon & Sun : 16° (sunlit = 96%), Sun = 140°
Cross-track uncertainty : 2.0 mas = 3 km = 0.52 path-width (1-sig)
RUWE and duplicate source : 1.04 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#45
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0