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Stellar Occultation by (81) Terpsichore on 2025-04-02 (20:17:40 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] : ab1e0ab0-852d-11ef-78cd-83dddfdf8f20 [asteroids]

 Occultation Date + Time   : 2025-04-02 at 20:17:40 UT +/- 0.02 min  [1]
 Object Designation        : (81) Terpsichore
 Star Designation          : GDR3 0689225359178091392
 Star Coordinates (ICRF)   : RA = 08 51 37.0078, DE = +23 14 34.663  [2]
 Star Magnitudes           : G = 12.76 mag, RP = 12.29 mag, BP = 13.07 mag
 Object Magnitude          : V = 13.59 mag
 Estimated Magnitude Drop  : 1.3 mag
 Estimated Max. Duration   : 19.9 sec
 Object Mean Diameter      : 119.1 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 6.0 km/s
 Elongation to Moon & Sun  : 54° (sunlit = 26%), Sun = 115°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.82 mas, dup.src = 1  (0:false, 1:true)

 Ephemeris Reference       : JPL#82

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


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