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Stellar Occultation by (409) Aspasia on 2023-07-21 (00:12:38 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] : ddfd12c0-ddb3-11f0-547e-2e24efff17ed [observed]

 Occultation Date + Time   : 2023-07-21 at 00:12:38 UT +/- 0.0 min  [1]
 Object Designation        : (409) Aspasia
 Star Designation          : GDR3 0110081076948450560
 Star Coordinates (ICRF)   : RA = 02 56 35.2563, DE = +23 02 05.551  [2]
 Star Magnitudes           : G = 10.0 mag, RP = 9.57 mag, BP = 10.27 mag
 Object Magnitude          : V = 13.02 mag
 Estimated Magnitude Drop  : 3.1 mag
 Estimated Max. Duration   : 6.2 sec
 Speed of the shadow       : 26.0 km/s
 Object Mean Diameter      : 161.6 km  (src: astorb) => apparent = 76 mas
 Apparent Motion           : 0.7367 arcs/min @ PA = 75 deg
 Horizontal Parallax       : 3.0090 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 104° (sunlit = 9%), Sun = 70°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.16 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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