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Stellar Occultation by (40621) 1999 RG169 on 2023-12-16 (19:27:31 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] : 49f59b50-ddb4-11f0-547e-35aab3ca8f21 [observed]

 Occultation Date + Time   : 2023-12-16 at 19:27:31 UT +/- 0.01 min  [1]
 Object Designation        : (40621) 1999 RG169
 Star Designation          : GDR3 0218519212945479296
 Star Coordinates (ICRF)   : RA = 03 54 05.4817, DE = +33 31 57.796  [2]
 Star Magnitudes           : G = 9.35 mag, RP = 8.88 mag, BP = 9.64 mag
 Object Magnitude          : V = 17.98 mag
 Estimated Magnitude Drop  : 8.6 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 8.4 km/s
 Object Mean Diameter      : 4.2 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.4667 arcs/min @ PA = 241 deg
 Horizontal Parallax       : 5.9330 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 109° (sunlit = 18%), Sun = 155°
 Cross-track uncertainty   : 0.8 mas = 0 km = 0.20 path-width (1-sig)
 RUWE and duplicate source : 3.59 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#48
 Note                      : FP:true

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


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