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] : 5d66b578-a4d3-424e-aeb5-47d3fad9af76 [observed]
Occultation Date + Time : 2018-03-21 at 00:50:15 UT +/- 0.01 min [1]
Object Designation : (1354) Botha
Orbit Class : MBA
Star Designation : GDR3 3696895234632281984
Star Coordinates (ICRF) : RA = 12 34 20.9371, DE = +00 08 14.010 [2]
Star Magnitudes : G = 13.44 mag, RP = 12.78 mag, BP = 13.94 mag
Object Magnitude : V = 15.25 mag
Estimated Magnitude Drop : 2.0 mag
Estimated Max. Duration : 3.9 sec
Object Mean Diameter : 49 km (src: astorb)
Speed of the shadow : 12.6 km/s
Elongation to Moon & Sun : 144° (sunlit = 14%), Sun = 172°
Cross-track uncertainty : 2.3 mas = 3 km = 0.07 path-width (1-sig)
RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#76
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0