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Stellar Occultation by (11987) Yonematsu on 2023-05-07 (22:04:50 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] : 95294640-ddb3-11f0-547e-4c29cf96d8a0 [observed]

 Occultation Date + Time   : 2023-05-07 at 22:04:50 UT +/- 0.0 min  [1]
 Object Designation        : (11987) Yonematsu
 Star Designation          : GDR3 0881200123748770816
 Star Coordinates (ICRF)   : RA = 08 02 25.1188, DE = +32 43 37.123  [2]
 Star Magnitudes           : G = 14.32 mag, RP = 13.75 mag, BP = 14.56 mag
 Object Magnitude          : V = 18.2 mag
 Estimated Magnitude Drop  : 3.9 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 27.9 km/s
 Object Mean Diameter      : 8.3 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.8800 arcs/min @ PA = 107 deg
 Horizontal Parallax       : 3.3530 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 139° (sunlit = 94%), Sun = 69°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 2.83 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#56
 Note                      : FP:true

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


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