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Stellar Occultation by (145474) 2005 SA278 on 2025-10-23 (01:02:47 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] : 84342cc0-d2a6-11ee-7567-f613c9f527f8 [cetnos]

 Occultation Date + Time   : 2025-10-23 at 01:02:47 UT +/- 1.43 min  [1]
 Object Designation        : (145474) 2005 SA278
 Star Designation          : GDR3 3284635686261759488
 Star Coordinates (ICRF)   : RA = 04 08 59.9920, DE = +04 59 27.814  [2]
 Star Magnitudes           : G = 10.14 mag, RP = 9.59 mag, BP = 10.43 mag
 Object Magnitude          : V = 21.77 mag
 Estimated Magnitude Drop  : 11.6 mag
 Estimated Max. Duration   : 9.5 sec
 Speed of the shadow       : 19.9 km/s
 Object Mean Diameter      : 188.6 km  (src: CORA+astorb) => apparent = 8 mas
 Apparent Motion           : 0.0483 arcs/min @ PA = 245 deg
 Horizontal Parallax       : 0.2610 arcs
 Dynamical Class           : TNO
 Elongation to Moon & Sun  : 155° (sunlit = 2%), Sun = 145°
 Cross-track uncertainty   : 34.7 mas = 847 km = 4.50 path-width (1-sig)
 RUWE and duplicate source : 1.46 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#16 (24-02-23)

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


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