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2025-10-04 / UCAC4 568-015283 / (1645) Waterfield

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Björn Kattentidt O+ VID M280 DE GPS 22:54:01 22:55:47.347 22:55:49.267 22:58:00 0.360 0.360 1.92 9.4
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#77 : 819f5830-ddb8-11f0-547e-ecb776c70c81 [db: observed]

Using prediction 819f5830-ddb8-11f0-547e-ecb776c70c81 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-10-04, 22:55 UT (JD = 2460953.455)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 46701.04.843 151°, 59° 2.45732e63633.50.0° None2020-10-05 not scaled 2019-10-23
# 46711.04.843 336°, 43° 2.45732e63633.50.0° None2020-10-05 not scaled 2019-10-23
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] : 819f5830-ddb8-11f0-547e-ecb776c70c81 [observed]

 Occultation Date + Time   : 2025-10-04 at 23:08:11 UT +/- 0.01 min  [1]
 Object Designation        : (1645) Waterfield
 Orbit Class               : MBA
 Star Designation          : GDR3 3415802338212917376
 Star Coordinates (ICRF)   : RA = 05 10 50.7296, DE = +23 30 44.501  [2]
 Star Magnitudes           : G = 14.81 mag, RP = 14.04 mag, BP = 15.44 mag
 Object Magnitude          : V = 16.17 mag
 Estimated Magnitude Drop  : 1.6 mag
 Estimated Max. Duration   : 6.2 sec
 Object Mean Diameter      : 30.6 km  (src: astorb)
 Speed of the shadow       : 4.9 km/s
 Elongation to Moon & Sun  : 97° (sunlit = 93%), Sun = 113°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.09 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#77
 Note                      : FP:true

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

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