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Stellar Occultation by (202) Chryseis on 2026-02-20 (17:58:29 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] : d9c4ddb0-de6b-11f0-4858-2efdb7ee9429 [asteroids]

 Occultation Date + Time   : 2026-02-20 at 17:58:29 UT +/- 0.01 min  [1]
 Object Designation        : (202) Chryseis
 Star Designation          : GDR3 0018933731964795520
 Star Coordinates (ICRF)   : RA = 02 38 39.8319, DE = +06 58 54.714  [2]
 Star Magnitudes           : G = 13.33 mag, RP = 12.84 mag, BP = 13.64 mag
 Object Magnitude          : V = 13.5 mag
 Estimated Magnitude Drop  : 0.8 mag
 Estimated Max. Duration   : 3.2 sec
 Speed of the shadow       : 27.4 km/s
 Object Mean Diameter      : 86.2 km  (src: astorb) => apparent = 37 mas
 Apparent Motion           : 0.7083 arcs/min @ PA = 64 deg
 Horizontal Parallax       : 2.7490 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 29° (sunlit = 12%), Sun = 68°
 Cross-track uncertainty   : 1.5 mas = 3 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 4.88 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#118
 Note                      : FP:true

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


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