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2025-10-18 / UCAC4 631-014006 / (31819) 1999 RS150

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Deborah Smith O+ VID M300 ES GPS 22:05:01 22:06:00.181 22:06:03.429 22:07:01 0.004 0.004 3.25 40.6
2 show Ferran Casarramona O- VID M200 ES GPS 22:05:02 :: :: 22:07:02
3 show Deborah Smith O- VID M200 ES GPS 22:05:03 :: :: 22:07:03
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

3 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#53 : 942132d0-ddb8-11f0-547e-dd12f9b61966 [db: observed]

Using prediction 942132d0-ddb8-11f0-547e-dd12f9b61966 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] : 942132d0-ddb8-11f0-547e-dd12f9b61966 [observed]

 Occultation Date + Time   : 2025-10-18 at 21:59:48 UT +/- 0.05 min  [1]
 Object Designation        : (31819) 1999 RS150
 Orbit Class               : JTRO
 Star Designation          : GDR3 0220044166853883392
 Star Coordinates (ICRF)   : RA = 03 49 01.9128, DE = +36 07 02.928  [2]
 Star Magnitudes           : G = 10.72 mag, RP = 9.95 mag, BP = 11.36 mag
 Object Magnitude          : V = 18.87 mag
 Estimated Magnitude Drop  : 8.1 mag
 Estimated Max. Duration   : 1.4 sec
 Object Mean Diameter      : 17.5 km  (src: astorb)
 Speed of the shadow       : 12.5 km/s
 Elongation to Moon & Sun  : 113° (sunlit = 6%), Sun = 140°
 Cross-track uncertainty   : 3.3 mas = 10 km = 0.61 path-width (1-sig)
 RUWE and duplicate source : 1.17 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#53
 Note                      : FP:true

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

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