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Stellar Occultation by (4231) Fireman on 2025-03-18 (20:19:22 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] : fb25d6c0-89bd-11ef-78cd-fdf4fee66482 [asteroids]

 Occultation Date + Time   : 2025-03-18 at 20:19:22 UT +/- 0.0 min  [1]
 Object Designation        : (4231) Fireman
 Star Designation          : GDR3 3844257413687520000
 Star Coordinates (ICRF)   : RA = 09 23 28.4636, DE = +01 31 26.173  [2]
 Star Magnitudes           : G = 12.28 mag, RP = 11.83 mag, BP = 12.56 mag
 Object Magnitude          : V = 17.09 mag
 Estimated Magnitude Drop  : 4.8 mag
 Estimated Max. Duration   : 1.9 sec
 Object Mean Diameter      : 13.3 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 7.0 km/s
 Elongation to Moon & Sun  : 85° (sunlit = 82%), Sun = 142°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.11 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#58

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


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