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2019-03-23 / 4UC 555-017482 / (1004) Belopolskya

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Lionel Rousselot O+ CCD M250 FR GPS++ 21:21:13 21:23:38.68 21:23:42.92 21:24:14 0.03 0.02 4.24 83.1
2 show Gerald Rousseau O+ VID M200 FR 21:21:06 21:23:34.3 21:23:37.6 21:23:48 1 1 3.30 64.7
3 show Pierre Le Cam O+ CCD M500 FR GPS++ 21:21:33 21:23:37.19 21:23:37.92 21:25:33 0.05 0.02 0.73 14.3
4 show Pietro Baruffetti O- VID M300 IT 21:22:39 21:25:40
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

4 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#66 : 3fba8d46-b6e5-4f61-8c78-273e6fd2a0a0 [db: observed]

Using prediction 3fba8d46-b6e5-4f61-8c78-273e6fd2a0a0 for map and profile fit

Get observations as KML file (reduced site location resolution)

Ellipse and circular profile fits to the timings (chords)

 Auto-Fit Result:
Ellipse profile fit was not successful. Trying circular fit.

Circular diameter = 84 km

From 3 chords (VID,CCD)








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Event Details 
 Occultation UUID [and DB] : 3fba8d46-b6e5-4f61-8c78-273e6fd2a0a0 [observed]

 Occultation Date + Time   : 2019-03-23 at 21:20:08 UT +/- 0.01 min  [1]
 Object Designation        : (1004) Belopolskya
 Orbit Class               : MBA
 Star Designation          : GDR3 3402910048982710784
 Star Coordinates (ICRF)   : RA = 05 37 04.3628, DE = +20 58 51.187  [2]
 Star Magnitudes           : G = 11.58 mag, RP = 10.57 mag, BP = 12.63 mag
 Object Magnitude          : V = 16.02 mag
 Estimated Magnitude Drop  : 4.5 mag
 Estimated Max. Duration   : 3.7 sec
 Object Mean Diameter      : 72 km  (src: astorb)
 Speed of the shadow       : 19.6 km/s
 Elongation to Moon & Sun  : 137° (sunlit = 89%), Sun = 82°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.34 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#66

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

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