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Stellar Occultation by (19615) 1999 OB3 on 2025-09-29 (21:32:09 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] : 9b52ef30-ddb8-11f0-547e-bb20ddffc82e [observed]

 Occultation Date + Time   : 2025-09-29 at 21:32:09 UT +/- 0.01 min  [1]
 Object Designation        : (19615) 1999 OB3
 Star Designation          : GDR3 0119177031703446656
 Star Coordinates (ICRF)   : RA = 03 19 52.8722, DE = +28 53 42.788  [2]
 Star Magnitudes           : G = 14.57 mag, RP = 13.71 mag, BP = 15.32 mag
 Object Magnitude          : V = 16.97 mag
 Estimated Magnitude Drop  : 2.5 mag
 Estimated Max. Duration   : 3.7 sec
 Speed of the shadow       : 3.2 km/s
 Object Mean Diameter      : 11.8 km  (src: astorb) => apparent = 8 mas
 Apparent Motion           : 0.1283 arcs/min @ PA = 252 deg
 Horizontal Parallax       : 4.3060 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 139° (sunlit = 49%), Sun = 131°
 Cross-track uncertainty   : 0.2 mas = 0 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL72
 Note                      : FP:true

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


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