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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2 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : 79a22045-5ef9-433d-85d7-a1afb91f65d4 [observed]
Occultation Date + Time : 2022-02-23 at 04:53:07 UT +/- 0.02 min [1]
Object Designation : (971) Alsatia
Orbit Class : MBA
Star Designation : GDR3 4401449503888257536
Star Coordinates (ICRF) : RA = 15 24 25.3029, DE = -05 01 34.630 [2]
Star Magnitudes : G = 15.47 mag, RP = 14.96 mag, BP = 15.8 mag
Object Magnitude : V = 15.23 mag
Estimated Magnitude Drop : 0.6 mag
Estimated Max. Duration : 7.7 sec
Object Mean Diameter : 64 km (src: astorb)
Speed of the shadow : 8.3 km/s
Elongation to Moon & Sun : 14° (sunlit = 58%), Sun = 104°
Cross-track uncertainty : 2.7 mas = 4 km = 0.07 path-width (1-sig)
RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#63
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0