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Stellar Occultation by (31829) 1999 XT12 on 2023-07-07 (21:12:40 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] : c5c4aa10-ddb3-11f0-547e-a4079c76c0cf [observed]

 Occultation Date + Time   : 2023-07-07 at 21:12:40 UT +/- 0.0 min  [1]
 Object Designation        : (31829) 1999 XT12
 Star Designation          : GDR3 4100408163712705408
 Star Coordinates (ICRF)   : RA = 18 44 38.5125, DE = -15 23 46.530  [2]
 Star Magnitudes           : G = 13.42 mag, RP = 11.98 mag, BP = 16.02 mag
 Object Magnitude          : V = 17.62 mag
 Estimated Magnitude Drop  : 4.2 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 12.5 km/s
 Object Mean Diameter      : 7.0 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.5250 arcs/min @ PA = 252 deg
 Horizontal Parallax       : 4.4510 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 67° (sunlit = 74%), Sun = 171°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 0.86 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#63
 Note                      : FP:true

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


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