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2021-05-25 / 4UC 522-050421 / (2731) Cucula

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Michal Rottenborn O+ CCD M254 CZ GPS++ 21:47:56 21:49:53.52 21:49:57.52 21:51:56 0.25 0.25 4.00 46.8
2 show Karel Halir O- VID M507 CZ 21:47:56 21:51:56
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#64 : 4d293bb4-3d10-4faa-8244-5b047872b0d6 [db: observed]

Using prediction 4d293bb4-3d10-4faa-8244-5b047872b0d6 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2021-05-25, 21:48 UT (JD = 2459360.408)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 49861.061.453 322°, 64° 2.457359e62001.40.0° None2020-10-05 not scaled 2019-10-23
# 49871.061.454 112°, 38° 2.457359e62001.40.0° 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] : 4d293bb4-3d10-4faa-8244-5b047872b0d6 [observed]

 Occultation Date + Time   : 2021-05-25 at 21:47:00 UT +/- 0.02 min  [1]
 Object Designation        : (2731) Cucula
 Orbit Class               : MBA
 Star Designation          : GDR3 3885090702858255488
 Star Coordinates (ICRF)   : RA = 10 49 11.2113, DE = +14 20 51.904  [2]
 Star Magnitudes           : G = 14.36 mag, RP = 13.88 mag, BP = 14.67 mag
 Object Magnitude          : V = 16.93 mag
 Estimated Magnitude Drop  : 2.7 mag
 Estimated Max. Duration   : 4.4 sec
 Object Mean Diameter      : 51 km  (src: astorb)
 Speed of the shadow       : 11.7 km/s
 Elongation to Moon & Sun  : 79° (sunlit = 100%), Sun = 93°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#64

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

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