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Stellar Occultation by (409) Aspasia on 2026-05-27 (01:59:52 UT)

CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.


Event Details
 Occultation UUID [and db] : e6b94a00-33c6-11f1-6999-1699eecd92cc [asteroids]

 Occultation Date + Time   : 2026-05-27 at 01:59:52 UT +/- 0.04 min  [1]
 Object Designation        : (409) Aspasia
 Star Designation          : GDR3 4186882554213048192
 Star Coordinates (ICRF)   : RA = 19 38 05.1740, DE = -12 01 02.721  [2]
 Star Magnitudes           : G = 13.12 mag, RP = 12.23 mag, BP = 13.92 mag
 Object Magnitude          : V = 11.44 mag
 Estimated Magnitude Drop  : 0.2 mag
 Estimated Max. Duration   : 27.6 sec
 Speed of the shadow       : 5.9 km/s
 Object Mean Diameter      : 161.6 km  (src: astorb) => apparent = 136 mas
 Apparent Motion           : 0.2950 arcs/min @ PA = 342 deg
 Horizontal Parallax       : 5.3660 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 96° (sunlit = 84%), Sun = 131°
 Cross-track uncertainty   : 1.7 mas = 2 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#136
 Note                      : FP:true

 Object is a <Gaia mass determination> target !

 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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