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Stellar Occultation by (159398) 1998 TN38 on 2025-08-27 (21:48:12 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] : 550cc7e0-ddb7-11f0-547e-f520ca7e1239 [observed] Occultation Date + Time : 2025-08-27 at 21:48:12 UT +/- 0.07 min [1] Object Designation : (159398) 1998 TN38 Star Designation : GDR3 1733683340240041216 Star Coordinates (ICRF) : RA = 21 06 53.2231, DE = +05 56 43.060 [2] Star Magnitudes : G = 13.56 mag, RP = 13.16 mag, BP = 13.82 mag Object Magnitude : V = 19.56 mag Estimated Magnitude Drop : 6.0 mag Estimated Max. Duration : 0.2 sec Speed of the shadow : 12.7 km/s Object Mean Diameter : 2.9 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.5633 arcs/min @ PA = 225 deg Horizontal Parallax : 4.7270 arcs Dynamical Class : MBA Elongation to Moon & Sun : 113° (sunlit = 20%), Sun = 155° Cross-track uncertainty : 22.0 mas = 29 km = 10.24 path-width (1-sig) RUWE and duplicate source : 3.3 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#33 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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