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2025-10-01 / UCAC4 559-006226 / (69917) 1998 TF

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Anna Marciniak O+ CCD M400 PL GPS 20:22:08 20:23:07.83 20:23:08.92 20:24:12 0.150 0.150 1.09 6.1
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#57 : 9b59cd00-ddb8-11f0-547e-1792d75cfe55 [db: observed]

Using prediction 9b59cd00-ddb8-11f0-547e-1792d75cfe55 for map and profile fit

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Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : 9b59cd00-ddb8-11f0-547e-1792d75cfe55 [observed]

 Occultation Date + Time   : 2025-10-01 at 20:08:11 UT +/- 0.01 min  [1]
 Object Designation        : (69917) 1998 TF
 Orbit Class               : MBA
 Star Designation          : GDR3 0108802417940829696
 Star Coordinates (ICRF)   : RA = 03 09 23.8583, DE = +21 42 54.325  [2]
 Star Magnitudes           : G = 12.96 mag, RP = 12.28 mag, BP = 13.48 mag
 Object Magnitude          : V = 17.86 mag
 Estimated Magnitude Drop  : 4.9 mag
 Estimated Max. Duration   : 1.2 sec
 Object Mean Diameter      : 7.0 km  (src: astorb)
 Speed of the shadow       : 5.6 km/s
 Elongation to Moon & Sun  : 111° (sunlit = 68%), Sun = 138°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.20 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#57
 Note                      : FP:true

 Object is a "TNOs are cool" target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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