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] : b95d9691-3e03-4d9d-b266-c18a43c94bcb [observed]
Occultation Date + Time : 2019-02-27 at 19:43:59 UT +/- 0.01 min [1]
Object Designation : (1796) Riga
Orbit Class : MBA
Star Designation : GDR3 3256740767025794176
Star Coordinates (ICRF) : RA = 04 00 09.1496, DE = -00 45 24.659 [2]
Star Magnitudes : G = 13.41 mag, RP = 12.72 mag, BP = 13.9 mag
Object Magnitude : V = 16.24 mag
Estimated Magnitude Drop : 2.9 mag
Estimated Max. Duration : 3.6 sec
Object Mean Diameter : 74 km (src: astorb)
Speed of the shadow : 20.8 km/s
Elongation to Moon & Sun : 148° (sunlit = 37%), Sun = 80°
Cross-track uncertainty : 0.3 mas = 0 km = 0.01 path-width (1-sig)
RUWE and duplicate source : 1.17 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#64
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0