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2023-04-18 / TYC 6168-00583-1 / (4571) Grumiaux

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Henk Bulder O+ VIS M305 NL GPS 00:07:10 00:08:20.5 00:08:21.6 00:09:30 0.2 0.2 1.10 13.2
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

1 observation found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#70 : 8d3b17b0-ddb3-11f0-547e-7cacbdfd5703 [db: observed]

Using prediction 8d3b17b0-ddb3-11f0-547e-7cacbdfd5703 for map and profile fit

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Event Details
 Occultation UUID [and DB] : 8d3b17b0-ddb3-11f0-547e-7cacbdfd5703 [observed]

 Occultation Date + Time   : 2023-04-18 at 00:04:43 UT +/- 0.0 min  [1]
 Object Designation        : (4571) Grumiaux
 Orbit Class               : MBA
 Star Designation          : GDR3 6306998395722536192
 Star Coordinates (ICRF)   : RA = 15 01 51.0523, DE = -15 22 57.408  [2]
 Star Magnitudes           : G = 11.56 mag, RP = 11.09 mag, BP = 11.86 mag
 Object Magnitude          : V = 17.5 mag
 Estimated Magnitude Drop  : 5.9 mag
 Estimated Max. Duration   : 0.9 sec
 Object Mean Diameter      : 10.9 km  (src: astorb)
 Speed of the shadow       : 12.0 km/s
 Elongation to Moon & Sun  : 132° (sunlit = 6%), Sun = 160°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#70
 Note                      : FP:true

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

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