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Stellar Occultation by (139387) 2001 NH3 on 2024-08-22 (20:49:56 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] : b4df4e10-c353-11ef-5276-d310fab844b6 [observed]

 Occultation Date + Time   : 2024-08-22 at 20:49:56 UT +/- 0.28 min  [1]
 Object Designation        : (139387) 2001 NH3
 Star Designation          : GDR3 4070939877696845696
 Star Coordinates (ICRF)   : RA = 18 03 05.7833, 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
 Object Mean Diameter      : 2 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 4.3 km/s
 Elongation to Moon & Sun  : 103° (sunlit = 87%), Sun = 120°
 Cross-track uncertainty   : 20.0 mas = 28 km = 11.77 path-width (1-sig)
 RUWE and duplicate source : 1.17 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#29

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


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