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2021-11-23 / 4UC 593-016335 / (212) Medea

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Philip Denyer O+1 VID M235 UK GPS++ 22:34:32 22:36:28.84 22:36:34.48 22:38:31 0.04 0.04 5.64 58.7
2 show Philip Denyer O+2 VID M235 UK GPS++ 22:34:32 22:37:04.16 22:37:16.32 22:38:31 0.04 0.04 12.16 126.5
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#106 : b4bb091e-d4a3-49bc-be91-56da35185a18 [db: observed]
JPL#106 : e502a36e-ef9a-4455-b192-73c2047bdec0 [db: observed]
JPL#106 : 3d97e721-1897-4862-9a9f-e28e3a3db4e3 [db: observed]

Using prediction b4bb091e-d4a3-49bc-be91-56da35185a18 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: 2021-11-23, 22:36 UT (JD = 2459542.442)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 1091None10.284 40°, -24° 2.445234e614308.40.0° NoneNone not scaled 2016-01-04
# 1092None10.284 220°, -33° 2.445234e614308.40.0° NoneNone not scaled 2016-01-04
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] : b4bb091e-d4a3-49bc-be91-56da35185a18 [observed]

 Occultation Date + Time   : 2021-11-23 at 22:33:24 UT +/- 0.02 min  [1]
 Object Designation        : (212) Medea
 Orbit Class               : MBA
 Star Designation          : GDR3 0155558428359087104
 Star Coordinates (ICRF)   : RA = 05 07 54.5956, DE = +28 34 15.926  [2]
 Star Magnitudes           : G = 10.47 mag, RP = 9.77 mag, BP = 10.49 mag
 Object Magnitude          : V = 12.61 mag
 Estimated Magnitude Drop  : 2.3 mag
 Estimated Max. Duration   : 13.0 sec
 Object Mean Diameter      : 136 km  (src: astorb)
 Speed of the shadow       : 10.4 km/s
 Elongation to Moon & Sun  : 33° (sunlit = 83%), Sun = 162°
 Cross-track uncertainty   : 3.3 mas = 4 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#106

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

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