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2022-01-30 / 4UC 572-044167 / (7859) Lhasa

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Matthieu Conjat O+ CCD M500 FR GPS++ 20:03:22 20:05:30.58 20:05:31.93 20:06:20 0.07 0.04 1.35 15.7
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: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#49 : d59f6e78-2e28-4d59-a663-c34e79db8f44 [db: observed]

Using prediction d59f6e78-2e28-4d59-a663-c34e79db8f44 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2022-01-30, 20:04 UT (JD = 2459610.336)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 23261.510.704 13°, -43° 2.450714e68896.30.0° None2018-07-19 not scaled 2018-07-18
# 23271.510.704 180°, -46° 2.450714e68896.30.0° None2018-07-19 not scaled 2018-07-18
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] : d59f6e78-2e28-4d59-a663-c34e79db8f44 [observed]

 Occultation Date + Time   : 2022-01-30 at 19:59:53 UT +/- 0.02 min  [1]
 Object Designation        : (7859) Lhasa
 Orbit Class               : MBA
 Star Designation          : GDR3 0678467707349304704
 Star Coordinates (ICRF)   : RA = 08 31 59.8324, DE = +24 13 08.847  [2]
 Star Magnitudes           : G = 12.77 mag, RP = 12.38 mag, BP = 13.02 mag
 Object Magnitude          : V = 17.18 mag
 Estimated Magnitude Drop  : 4.4 mag
 Estimated Max. Duration   : 0.6 sec
 Object Mean Diameter      : 7 km  (src: astorb)
 Speed of the shadow       : 11.6 km/s
 Elongation to Moon & Sun  : 167° (sunlit = 3%), Sun = 172°
 Cross-track uncertainty   : 3.3 mas = 4 km = 0.62 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#49

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

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