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2010-02-20 / HIP 36221 / (196) Philomela

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Maarten De Vries O+ VID L100 UK RAD 21:54:56.0 21:55:21.0 1.3 1.3 25.00 157.5
2 show Rhona Fraser O+ VIS B100 UK GPS 21:52:10 21:54:54.1 21:55:20.5 21:55:38 26.40 166.3
3 show J.R. Stapleton O- CCD M300 UK 21:54:40 21:55:37
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

3 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#134 : bf78b8a7-b3e1-4ccb-b841-3aed00ee4f49 [db: observed]

Using prediction bf78b8a7-b3e1-4ccb-b841-3aed00ee4f49 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:
Circular profile fit was not successful ...








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Sky projection (artificial light) for occ. time: 2010-02-20, 21:53 UT (JD = 2455248.412)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 178None8.333 111°, -41° 2.4387e616548.40.0° None2010-04-15 not scaled 2007-02-27
# 179None8.333 276°, -49° 2.4387e616548.40.0° None2010-04-15 not scaled 2007-02-27
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] : bf78b8a7-b3e1-4ccb-b841-3aed00ee4f49 [observed]

 Occultation Date + Time   : 2010-02-20 at 21:55:28 UT +/- 0.02 min  [1]
 Object Designation        : (196) Philomela
 Orbit Class               : MBA
 Star Designation          : GDR3 0873650842551479424
 Star Coordinates (ICRF)   : RA = 07 27 32.7479, DE = +29 18 48.218  [2]
 Star Magnitudes           : G = 8.84 mag, RP = 8.42 mag, BP = 9.09 mag
 Object Magnitude          : V = 11.85 mag
 Estimated Magnitude Drop  : 3.1 mag
 Estimated Max. Duration   : 21.7 sec
 Object Mean Diameter      : 136 km  (src: astorb)
 Speed of the shadow       : 6.3 km/s
 Elongation to Moon & Sun  : 60° (sunlit = 38%), Sun = 136°
 Cross-track uncertainty   : 1.7 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.12 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#134

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

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