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Stellar Occultation by (418631) 2008 TT40 on 2024-09-21 (21:03:54 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] : 6a28c040-ddb5-11f0-547e-850eeeff9081 [observed]

 Occultation Date + Time   : 2024-09-21 at 21:03:54 UT +/- 0.25 min  [1]
 Object Designation        : (418631) 2008 TT40
 Star Designation          : GDR3 4212125417038941440
 Star Coordinates (ICRF)   : RA = 19 13 01.8454, DE = -04 58 53.365  [2]
 Star Magnitudes           : G = 11.15 mag, RP = 10.66 mag, BP = 11.46 mag
 Object Magnitude          : V = 21.54 mag
 Estimated Magnitude Drop  : 10.4 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 8.0 km/s
 Object Mean Diameter      : 2.0 km  (src: astorb) => apparent = 1 mas
 Apparent Motion           : 0.2650 arcs/min @ PA = 130 deg
 Horizontal Parallax       : 3.5330 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 120° (sunlit = 80%), Sun = 109°
 Cross-track uncertainty   : 37.0 mas = 66 km = 33.40 path-width (1-sig)
 RUWE and duplicate source : 0.85 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#25
 Note                      : FP:true

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


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