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2022-01-11 / 4UC 440-050741 / (838) Seraphina

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Peter Nosal O+ CCD M250 SK NTP+ 00:16:30 00:19:23.26 00:19:29.92 00:19:30 0.17 0.17 6.66 57.9
2 show Stefano Sposetti O- CCD M420 CH 00:18:00 00:24:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#101 : 925c7cc5-bcf9-44b7-b348-cd3394a3bd3f [db: observed]

Using prediction 925c7cc5-bcf9-44b7-b348-cd3394a3bd3f for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2022-01-11, 00:19 UT (JD = 2459590.513)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 32571.011.724 194°, 24° 2.45087e68720.50.0° None2019-09-26 not scaled 2019-05-07
# 32581.011.724 20°, 23° 2.45087e68720.50.0° None2019-09-26 not scaled 2019-05-07
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] : 925c7cc5-bcf9-44b7-b348-cd3394a3bd3f [observed]

 Occultation Date + Time   : 2022-01-11 at 00:19:05 UT +/- 0.02 min  [1]
 Object Designation        : (838) Seraphina
 Orbit Class               : MBA
 Star Designation          : GDR3 3832590912417555840
 Star Coordinates (ICRF)   : RA = 09 56 10.1268, DE = -02 00 58.555  [2]
 Star Magnitudes           : G = 13.96 mag, RP = 13.34 mag, BP = 14.44 mag
 Object Magnitude          : V = 15.46 mag
 Estimated Magnitude Drop  : 1.7 mag
 Estimated Max. Duration   : 6.9 sec
 Object Mean Diameter      : 60 km  (src: astorb)
 Speed of the shadow       : 8.7 km/s
 Elongation to Moon & Sun  : 116° (sunlit = 62%), Sun = 137°
 Cross-track uncertainty   : 1.7 mas = 2 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#101

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

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