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Stellar Occultation by (1766) Slipher on 2025-09-06 (19:23:06 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] : 64d2b6d0-ddb7-11f0-547e-35f1d5f7837e [observed]

 Occultation Date + Time   : 2025-09-06 at 19:23:06 UT +/- 0.0 min  [1]
 Object Designation        : (1766) Slipher
 Star Designation          : GDR3 4123900539686442496
 Star Coordinates (ICRF)   : RA = 17 41 03.6247, DE = -17 18 23.756  [2]
 Star Magnitudes           : G = 13.77 mag, RP = 12.21 mag, BP = 17.29 mag
 Object Magnitude          : V = 17.41 mag
 Estimated Magnitude Drop  : 3.7 mag
 Estimated Max. Duration   : 2.1 sec
 Speed of the shadow       : 11.5 km/s
 Object Mean Diameter      : 24.5 km  (src: astorb) => apparent = 15 mas
 Apparent Motion           : 0.4217 arcs/min @ PA = 105 deg
 Horizontal Parallax       : 3.8770 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 67° (sunlit = 99%), Sun = 101°
 Cross-track uncertainty   : 0.6 mas = 0 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 0.8 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#71
 Note                      : FP:true

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


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