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2024-11-27 / UCAC4 543-035285 / (420) Bertholda

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Deborah Smith O+ CCD M280 ES NTP 21:43:32 21:45:23.178 21:45:38.674 21:47:32 0.04 0.04 15.50 136.4
2 show Stefano Sposetti O- VID M420 CH GPS 21:42:10 21:45:10
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: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#135 : b3318930-85a9-11ef-78cd-4dda795f3c03 [db: asteroids]
JPL#135 : 37979ed0-8276-11ef-6618-ce5964c2b16d [db: asteroids]

Using prediction b3318930-85a9-11ef-78cd-4dda795f3c03 for map and profile fit

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Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : b3318930-85a9-11ef-78cd-4dda795f3c03 [asteroids]

 Occultation Date + Time   : 2024-11-27 at 21:38:07 UT +/- 0.01 min  [1]
 Object Designation        : (420) Bertholda
 Orbit Class               : MBA
 Star Designation          : GDR3 3365323072189164160
 Star Coordinates (ICRF)   : RA = 06 50 39.3616, DE = +18 27 10.717  [2]
 Star Magnitudes           : G = 11.83 mag, RP = 11.47 mag, BP = 12.05 mag
 Object Magnitude          : V = 13.63 mag
 Estimated Magnitude Drop  : 2.0 mag
 Estimated Max. Duration   : 16.0 sec
 Object Mean Diameter      : 141 km  (src: astorb)
 Speed of the shadow       : 8.8 km/s
 Elongation to Moon & Sun  : 106° (sunlit = 10%), Sun = 144°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.91 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#135

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

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