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Stellar Occultation by (7920) 1981 XM2 on 2023-12-16 (20:35:38 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] : 49ce1620-ddb4-11f0-547e-e39f6ebff800 [observed]

 Occultation Date + Time   : 2023-12-16 at 20:35:38 UT +/- 0.0 min  [1]
 Object Designation        : (7920) 1981 XM2
 Star Designation          : GDR3 3358517434511869568
 Star Coordinates (ICRF)   : RA = 06 49 04.0335, DE = +17 42 06.804  [2]
 Star Magnitudes           : G = 12.45 mag, RP = 11.78 mag, BP = 12.96 mag
 Object Magnitude          : V = 16.43 mag
 Estimated Magnitude Drop  : 4.0 mag
 Estimated Max. Duration   : 0.7 sec
 Speed of the shadow       : 10.0 km/s
 Object Mean Diameter      : 7.4 km  (src: astorb) => apparent = 7 mas
 Apparent Motion           : 0.5983 arcs/min @ PA = 250 deg
 Horizontal Parallax       : 6.3460 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 144° (sunlit = 19%), Sun = 162°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 0.94 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#60
 Note                      : FP:true

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


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