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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6 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : d257b311-dbbd-4fa0-b32a-5a27f247e509 [observed]
Occultation Date + Time : 2019-03-31 at 21:39:53 UT +/- 0.02 min [1]
Object Designation : (259) Aletheia
Orbit Class : MBA
Star Designation : GDR3 3714032532099594880
Star Coordinates (ICRF) : RA = 13 49 32.8309, DE = +04 57 09.844 [2]
Star Magnitudes : G = 11.2 mag, RP = 10.45 mag, BP = 11.83 mag
Object Magnitude : V = 12.1 mag
Estimated Magnitude Drop : 1.3 mag
Estimated Max. Duration : 16.6 sec
Object Mean Diameter : 179 km (src: astorb)
Speed of the shadow : 10.7 km/s
Elongation to Moon & Sun : 118° (sunlit = 17%), Sun = 160°
Cross-track uncertainty : 5.3 mas = 7 km = 0.04 path-width (1-sig)
RUWE and duplicate source : 1.25 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#134
Object is a Gaia mass determination target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0