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2025-09-16 / UCAC4 540-017355 / (335) Roberta

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Michael OConnell O+ VID M350 ES NTP 05:24:25 05:25:23.54 05:25:27.90 05:26:24 0.200 0.200 4.36 66.7
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#95 : 6f1dc120-ddb7-11f0-547e-eda67adff99e [db: observed]

Using prediction 6f1dc120-ddb7-11f0-547e-eda67adff99e for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-09-16, 05:25 UT (JD = 2460934.726)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 31003.012.027 105°, 48° 2.444754e616180.70.0° None2019-06-25 100.0 +/- 11.0 km 2019-06-24
# 31013.012.027 297°, 54° 2.444754e616180.70.0° None2019-06-25 98.0 +/- 9.0 km 2019-06-24
Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0

   
Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : 6f1dc120-ddb7-11f0-547e-eda67adff99e [observed]

 Occultation Date + Time   : 2025-09-16 at 05:27:03 UT +/- 0.0 min  [1]
 Object Designation        : (335) Roberta
 Orbit Class               : MBA
 Star Designation          : GDR3 3397523644596774528
 Star Coordinates (ICRF)   : RA = 05 37 44.8843, DE = +17 55 09.333  [2]
 Star Magnitudes           : G = 14.55 mag, RP = 13.74 mag, BP = 15.25 mag
 Object Magnitude          : V = 14.38 mag
 Estimated Magnitude Drop  : 0.7 mag
 Estimated Max. Duration   : 5.8 sec
 Object Mean Diameter      : 89.1 km  (src: astorb)
 Speed of the shadow       : 15.3 km/s
 Elongation to Moon & Sun  : 24° (sunlit = 31%), Sun = 89°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#95
 Note                      : FP:true

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

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