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Stellar Occultation by (31539) 1999 DQ1 on 2024-09-15 (23:26:00 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] : 6484a8c0-ddb5-11f0-547e-cbdedfffeee8 [observed] Occultation Date + Time : 2024-09-15 at 23:26:00 UT +/- 0.0 min [1] Object Designation : (31539) 1999 DQ1 Star Designation : GDR3 2617600013622774016 Star Coordinates (ICRF) : RA = 22 00 34.7370, DE = -09 16 39.582 [2] Star Magnitudes : G = 12.77 mag, RP = 12.09 mag, BP = 13.29 mag Object Magnitude : V = 17.0 mag Estimated Magnitude Drop : 4.3 mag Estimated Max. Duration : 1.0 sec Speed of the shadow : 10.9 km/s Object Mean Diameter : 10.9 km (src: astorb) => apparent = 7 mas Apparent Motion : 0.4350 arcs/min @ PA = 275 deg Horizontal Parallax : 4.2660 arcs Dynamical Class : MBA Elongation to Moon & Sun : 8° (sunlit = 93%), Sun = 155° Cross-track uncertainty : 1.7 mas = 2 km = 0.23 path-width (1-sig) RUWE and duplicate source : 1.38 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#65 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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