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] : 0160beab-c331-47bf-9d20-6f3a0a7478d7 [observed]
Occultation Date + Time : 2018-09-15 at 01:55:31 UT +/- 0.02 min [1]
Object Designation : (917) Lyka
Orbit Class : MBA
Star Designation : GDR3 2583211726607052416
Star Coordinates (ICRF) : RA = 01 05 12.8193, DE = +11 02 17.843 [2]
Star Magnitudes : G = 11.84 mag, RP = 11.36 mag, BP = 12.15 mag
Object Magnitude : V = 13.93 mag
Estimated Magnitude Drop : 2.2 mag
Estimated Max. Duration : 5.7 sec
Object Mean Diameter : 28 km (src: astorb)
Speed of the shadow : 4.9 km/s
Elongation to Moon & Sun : 138° (sunlit = 32%), Sun = 153°
Cross-track uncertainty : 4.7 mas = 3 km = 0.12 path-width (1-sig)
RUWE and duplicate source : 1.38 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#58
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0