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Stellar Occultation by (175354) 2005 OS15 on 2023-11-19 (18:11:52 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] : 3ac50e90-ddb4-11f0-547e-1ea1eefb8808 [observed]

 Occultation Date + Time   : 2023-11-19 at 18:11:52 UT +/- 0.08 min  [1]
 Object Designation        : (175354) 2005 OS15
 Star Designation          : GDR3 0198956427186754048
 Star Coordinates (ICRF)   : RA = 04 58 21.8081, DE = +38 43 35.867  [2]
 Star Magnitudes           : G = 8.89 mag, RP = 8.7 mag, BP = 8.97 mag
 Object Magnitude          : V = 19.6 mag
 Estimated Magnitude Drop  : 10.7 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 12.2 km/s
 Object Mean Diameter      : 3.4 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4800 arcs/min @ PA = 250 deg
 Horizontal Parallax       : 4.1700 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 120° (sunlit = 42%), Sun = 154°
 Cross-track uncertainty   : 30.7 mas = 46 km = 13.81 path-width (1-sig)
 RUWE and duplicate source : 0.85 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#28
 Note                      : FP:true

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


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