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Stellar Occultation by (159840) 2003 UL247 on 2024-07-31 (22:01:48 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] : 1c215150-ddb5-11f0-547e-856afafb909d [observed]

 Occultation Date + Time   : 2024-07-31 at 22:01:48 UT +/- 0.13 min  [1]
 Object Designation        : (159840) 2003 UL247
 Star Designation          : GDR3 4123900539686442496
 Star Coordinates (ICRF)   : RA = 17 41 03.6250, DE = -17 18 23.753  [2]
 Star Magnitudes           : G = 13.77 mag, RP = 12.21 mag, BP = 17.29 mag
 Object Magnitude          : V = 20.49 mag
 Estimated Magnitude Drop  : 6.7 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 6.2 km/s
 Object Mean Diameter      : 2.8 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.2217 arcs/min @ PA = 243 deg
 Horizontal Parallax       : 3.8090 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 169° (sunlit = 13%), Sun = 136°
 Cross-track uncertainty   : 19.3 mas = 32 km = 11.54 path-width (1-sig)
 RUWE and duplicate source : 0.8 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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