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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1 observation found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : 79d4292b-4f34-4f60-9ce2-0ccd2d9526b8 [observed]
Occultation Date + Time : 2018-09-10 at 22:04:19 UT +/- 0.03 min [1]
Object Designation : (31539) 1999 DQ1
Orbit Class : MBA
Star Designation : GDR3 6854698127166314752
Star Coordinates (ICRF) : RA = 20 38 58.2174, DE = -23 22 10.273 [2]
Star Magnitudes : G = 12.55 mag, RP = 12.11 mag, BP = 12.83 mag
Object Magnitude : V = 17.11 mag
Estimated Magnitude Drop : 4.6 mag
Estimated Max. Duration : 1.4 sec
Object Mean Diameter : 11 km (src: astorb)
Speed of the shadow : 7.8 km/s
Elongation to Moon & Sun : 122° (sunlit = 2%), Sun = 138°
Cross-track uncertainty : 5.0 mas = 7 km = 0.68 path-width (1-sig)
RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#51
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0