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):
Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0
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Map with groundtrack and observer stations
Event Details
Occultation UUID [and DB] : 334ee74f-b7b2-493c-91c1-794ea4467457 [observed]
Occultation Date + Time : 2018-10-20 at 07:35:33 UT +/- 0.01 min [1]
Object Designation : (1585) Union
Orbit Class : MBA
Star Designation : GDR3 3073393625385237120
Star Coordinates (ICRF) : RA = 08 40 34.5334, DE = -01 01 34.508 [2]
Star Magnitudes : G = 10.86 mag, RP = 10.15 mag, BP = 11.42 mag
Object Magnitude : V = 15.0 mag
Estimated Magnitude Drop : 4.2 mag
Estimated Max. Duration : 2.1 sec
Object Mean Diameter : 50 km (src: astorb)
Speed of the shadow : 23.7 km/s
Elongation to Moon & Sun : 149° (sunlit = 81%), Sun = 75°
Cross-track uncertainty : 1.3 mas = 2 km = 0.04 path-width (1-sig)
RUWE and duplicate source : 0.91 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#70
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
