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2022-01-24 / 4UC 607-021346 / (4448) Phildavis

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Alberto Ossola O+ VID M230 CH GPS++ 21:26:53 21:28:31.58 21:28:33.50 21:30:02 0.32 0.32 1.92 12.1
2 show Stefano Sposetti O- CCD M420 CH 21:25:30 21:31:30
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#60 : 6e669b74-ad2f-4ae1-a256-cf82c198d875 [db: observed]

Using prediction 6e669b74-ad2f-4ae1-a256-cf82c198d875 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2022-01-24, 21:27 UT (JD = 2459604.394)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 29941.514.926 247°, 43° 2.450922e68682.40.0° None2018-07-19 not scaled 2018-07-18
# 29951.514.926 39°, 25° 2.450922e68682.40.0° 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] : 6e669b74-ad2f-4ae1-a256-cf82c198d875 [observed]

 Occultation Date + Time   : 2022-01-24 at 21:28:01 UT +/- 0.05 min  [1]
 Object Designation        : (4448) Phildavis
 Orbit Class               : MBA
 Star Designation          : GDR3 3447828912907690880
 Star Coordinates (ICRF)   : RA = 05 36 11.5273, DE = +31 14 17.327  [2]
 Star Magnitudes           : G = 12.88 mag, RP = 11.79 mag, BP = 14.15 mag
 Object Magnitude          : V = 15.66 mag
 Estimated Magnitude Drop  : 2.9 mag
 Estimated Max. Duration   : 2.1 sec
 Object Mean Diameter      : 13 km  (src: astorb)
 Speed of the shadow       : 6.3 km/s
 Elongation to Moon & Sun  : 121° (sunlit = 58%), Sun = 139°
 Cross-track uncertainty   : 6.0 mas = 6 km = 0.50 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#60

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

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