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Stellar Occultation by (297) Caecilia on 2025-08-31 (19:02:05 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] : 5b7b5b50-ddb7-11f0-547e-8c07efbfe683 [observed]

 Occultation Date + Time   : 2025-08-31 at 19:02:05 UT +/- 0.04 min  [1]
 Object Designation        : (297) Caecilia
 Star Designation          : GDR3 4048330688813052032
 Star Coordinates (ICRF)   : RA = 18 36 56.5921, DE = -28 52 51.033  [2]
 Star Magnitudes           : G = 12.67 mag, RP = 12.16 mag, BP = 13.01 mag
 Object Magnitude          : V = 14.01 mag
 Estimated Magnitude Drop  : 1.6 mag
 Estimated Max. Duration   : 7.7 sec
 Speed of the shadow       : 5.1 km/s
 Object Mean Diameter      : 39.5 km  (src: astorb) => apparent = 26 mas
 Apparent Motion           : 0.1983 arcs/min @ PA = 35 deg
 Horizontal Parallax       : 4.1280 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 24° (sunlit = 55%), Sun = 119°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.83 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#76
 Note                      : FP:true

 Object is a <Gaia mass determination> target !

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


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