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Stellar Occultation by (30690) 4633 T-2 on 2025-09-28 (23:35:47 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] : 7b4f9760-ddb8-11f0-547e-c367f5f716d4 [observed] Occultation Date + Time : 2025-09-28 at 23:35:47 UT +/- 0.02 min [1] Object Designation : (30690) 4633 T-2 Star Designation : GDR3 2536022989645572608 Star Coordinates (ICRF) : RA = 00 55 01.4971, DE = -00 43 32.602 [2] Star Magnitudes : G = 12.89 mag, RP = 12.36 mag, BP = 13.26 mag Object Magnitude : V = 18.98 mag Estimated Magnitude Drop : 6.1 mag Estimated Max. Duration : 0.3 sec Speed of the shadow : 12.0 km/s Object Mean Diameter : 3.3 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.5417 arcs/min @ PA = 245 deg Horizontal Parallax : 4.8090 arcs Dynamical Class : MBA Elongation to Moon & Sun : 107° (sunlit = 40%), Sun = 171° Cross-track uncertainty : 4.3 mas = 5 km = 1.73 path-width (1-sig) RUWE and duplicate source : 0.87 mas, dup.src = 1 (0:false, 1:true) Ephemeris Reference : JPL#49 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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