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] : 1571b0d2-9cf4-4d08-aa46-5571b1b63386 [observed]
Occultation Date + Time : 2020-09-27 at 22:31:58 UT +/- 1.87 min [1]
Object Designation : (110989) 2001 US197
Orbit Class : MBA
Star Designation : GDR3 4232804241462150144
Star Coordinates (ICRF) : RA = 20 31 03.0663, DE = +03 11 20.375 [2]
Star Magnitudes : G = 12.3 mag, RP = 11.52 mag, BP = 12.96 mag
Object Magnitude : V = 20.27 mag
Estimated Magnitude Drop : 8.0 mag
Estimated Max. Duration : 0.5 sec
Object Mean Diameter : 4 km (src: astorb)
Speed of the shadow : 7.7 km/s
Elongation to Moon & Sun : 28° (sunlit = 86%), Sun = 123°
Cross-track uncertainty : 5.0 mas = 9 km = 2.55 path-width (1-sig)
RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#35
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0