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Stellar Occultation by (138691) 2000 SP57 on 2023-12-11 (19:14:53 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] : 455649a0-ddb4-11f0-547e-7457f99f6e98 [observed]

 Occultation Date + Time   : 2023-12-11 at 19:14:53 UT +/- 0.01 min  [1]
 Object Designation        : (138691) 2000 SP57
 Star Designation          : GDR3 0249130716177442944
 Star Coordinates (ICRF)   : RA = 03 27 40.4140, DE = +47 49 52.525  [2]
 Star Magnitudes           : G = 10.99 mag, RP = 10.16 mag, BP = 11.72 mag
 Object Magnitude          : V = 19.91 mag
 Estimated Magnitude Drop  : 8.9 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 13.3 km/s
 Object Mean Diameter      : 3.8 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4517 arcs/min @ PA = 248 deg
 Horizontal Parallax       : 3.6290 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 155° (sunlit = 2%), Sun = 147°
 Cross-track uncertainty   : 2.3 mas = 4 km = 1.06 path-width (1-sig)
 RUWE and duplicate source : 1.67 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#33
 Note                      : FP:true

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


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