Stellar Occultation by (259) Aletheia on 2020-04-07 (03:28:03 UT)
Event Details
Occultation UUID [and db] : 5001b693-0139-439e-819e-7b57c35f95c7 [observed]
Occultation Date + Time : 2020-04-07 at 03:28:03 UT +/- 0.01 min [1]
Object Designation : (259) Aletheia
Star Designation : GDR3 6852947120538496128
Star Coordinates (ICRF) : RA = 20 23 59.2088, DE = -22 16 36.042 [2]
Star Magnitudes : G = 11.77 mag, RP = 11.11 mag, BP = 12.28 mag
Object Magnitude : V = 13.38 mag
Estimated Magnitude Drop : 1.8 mag
Estimated Max. Duration : 6.9 sec
Object Mean Diameter : 179 km (src: astorb)
Orbital Class : MBA
Speed of the shadow : 25.9 km/s
Elongation to Moon & Sun : 119° (sunlit = 99%), Sun = 75°
Cross-track uncertainty : 1.0 mas = 2 km = 0.01 path-width (1-sig)
RUWE and duplicate source : 0.92 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