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] : a16a72fe-c0ab-4d7a-8eef-3ef0ec9668c7 [observed]
Occultation Date + Time : 2018-07-20 at 01:23:07 UT +/- 0.01 min [1]
Object Designation : (1015) Christa
Orbit Class : MBA
Star Designation : GDR3 4083746336305784192
Star Coordinates (ICRF) : RA = 19 13 14.5333, DE = -19 59 27.988 [2]
Star Magnitudes : G = 13.96 mag, RP = 13.18 mag, BP = 14.62 mag
Object Magnitude : V = 14.22 mag
Estimated Magnitude Drop : 0.9 mag
Estimated Max. Duration : 7.2 sec
Object Mean Diameter : 97 km (src: astorb)
Speed of the shadow : 13.4 km/s
Elongation to Moon & Sun : 77° (sunlit = 53%), Sun = 170°
Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig)
RUWE and duplicate source : 1.04 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#125
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0