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2023-05-27 / UCAC4 386-102727 / (5145) Pholus

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Antoni Selva, Carlos Perello O- VID M500 ES GPS 23:37:25 23:45:25
2 show Arnaud Leroy O- VID T350 FR GPS 23:36:31 23:44:31
3 show Peter Delincak O- VID M400 SK NTP 23:35:0. 23:44:0.
4 show Jiri Kubanek O- VID M303 CZ GPS 23:32:31 23:47:34
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

4 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#24 : a7a0e7b0-ddb3-11f0-547e-d8e8eaff4a43 [db: observed]

Using prediction a7a0e7b0-ddb3-11f0-547e-d8e8eaff4a43 for map and profile fit

Get observations as KML file (reduced site location resolution)


Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : a7a0e7b0-ddb3-11f0-547e-d8e8eaff4a43 [observed]

 Occultation Date + Time   : 2023-05-27 at 23:38:35 UT +/- 1.7 min  [1]
 Object Designation        : (5145) Pholus
 Orbit Class               : CEN
 Star Designation          : GDR3 4104866649008641792
 Star Coordinates (ICRF)   : RA = 18 31 58.8628, DE = -12 57 03.665  [2]
 Star Magnitudes           : G = 12.52 mag, RP = 11.59 mag, BP = 13.39 mag
 Object Magnitude          : V = 21.9 mag
 Estimated Magnitude Drop  : 9.4 mag
 Estimated Max. Duration   : 6.2 sec
 Object Mean Diameter      : 132.3 km  (src: astorb)
 Speed of the shadow       : 21.5 km/s
 Elongation to Moon & Sun  : 116° (sunlit = 53%), Sun = 147°
 Cross-track uncertainty   : 45.0 mas = 941 km = 7.11 path-width (1-sig)
 RUWE and duplicate source : 1.19 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#24
 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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