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Stellar Occultation by (139387) 2001 NH3 on 2024-08-22 (20:49:54 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] : 4bee4190-ddb5-11f0-547e-f2edf1f42f1d [observed] Occultation Date + Time : 2024-08-22 at 20:49:54 UT +/- 0.26 min [1] Object Designation : (139387) 2001 NH3 Star Designation : GDR3 4070939877696845696 Star Coordinates (ICRF) : RA = 18 03 05.7828, DE = -20 38 12.049 [2] Star Magnitudes : G = 11.36 mag, RP = 10.23 mag, BP = 12.71 mag Object Magnitude : V = 20.33 mag Estimated Magnitude Drop : 9.0 mag Estimated Max. Duration : 0.6 sec Speed of the shadow : 4.3 km/s Object Mean Diameter : 2.4 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.1833 arcs/min @ PA = 140 deg Horizontal Parallax : 4.5140 arcs Dynamical Class : MBA Elongation to Moon & Sun : 103° (sunlit = 87%), Sun = 120° Cross-track uncertainty : 19.7 mas = 27 km = 11.60 path-width (1-sig) RUWE and duplicate source : 1.17 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#34 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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