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Stellar Occultation by (8810) Johnmcfarland on 2025-09-25 (18:54:12 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] : 75b4a7a0-ddb8-11f0-547e-5f7ccaf3e66b [observed]

 Occultation Date + Time   : 2025-09-25 at 18:54:12 UT +/- 0.01 min  [1]
 Object Designation        : (8810) Johnmcfarland
 Star Designation          : GDR3 4075988182259171072
 Star Coordinates (ICRF)   : RA = 18 34 35.9044, DE = -25 59 25.909  [2]
 Star Magnitudes           : G = 11.62 mag, RP = 10.73 mag, BP = 12.46 mag
 Object Magnitude          : V = 18.12 mag
 Estimated Magnitude Drop  : 6.5 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 16.7 km/s
 Object Mean Diameter      : 7.6 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.6217 arcs/min @ PA = 86 deg
 Horizontal Parallax       : 3.9470 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 51° (sunlit = 14%), Sun = 95°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 0.75 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL65
 Note                      : FP:true

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


More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
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