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2008-02-03 / TYC 2989-01266-1 / (595) Polyxena

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Herbert Raab O+ VID M200 AT GPS++ 18:56:40 18:58:49.92 18:58:55.32 19:00:40 0.12 0.12 5.40 77.8
2 show Gerhard Dangl O+ VID M254 AT GPS++ 18:55:04 18:58:44.57 18:58:49.05 19:02:02 0.08 0.08 4.48 64.5
3 show Michael Parl O- VID M203 DE 18:53:00 19:03:00
4 show Harald Marx O- VIS M350 DE 18:53:40 19:04:43
5 show Tomas Janik O? VIS M200 CZ RAD++ 18:57:59 18:58:31.97 18:58:33.64 19:00:49 0.2 0.5 1.67 24.0
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

5 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#104 : ccc1df12-015c-41fc-bf1a-3874563a47eb [db: observed]

Using prediction ccc1df12-015c-41fc-bf1a-3874563a47eb 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 = 301 km

From 3 chords (VID,VIS)








You can enter space separated chord numbers (example: 11 4 8) or a method like VIS to ignore all visual timings, or a time source like RAD and NTP (but not GPS).
If the plot disappears, then there are less than 2 chords left (too much ignored, go back with browser).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2008-02-03, 18:57 UT (JD = 2454500.290)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 228None11.794 42°, 8° 2.449187e65313.30.0° preliminary model, agrees well with occultation data http://www.asteroidoccultation.com/observations/Results/Data2015/20150415_PolyxenaProfileDAMIT228.gif2015-08-25 not scaled 2008-09-16
# 229None11.794 222°, -4° 2.449187e65313.30.0° preliminary model, probably wrong pole solution, does not agree with occultation data http://www.asteroidoccultation.com/observations/Results/2015-08-25 not scaled 2008-09-16
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] : ccc1df12-015c-41fc-bf1a-3874563a47eb [observed]

 Occultation Date + Time   : 2008-02-03 at 18:54:11 UT +/- 0.03 min  [1]
 Object Designation        : (595) Polyxena
 Orbit Class               : MBA
 Star Designation          : GDR3 0913063665779350144
 Star Coordinates (ICRF)   : RA = 08 53 19.9994, DE = +42 47 28.863  [2]
 Star Magnitudes           : G = 12.11 mag, RP = 11.64 mag, BP = 12.41 mag
 Object Magnitude          : V = 13.16 mag
 Estimated Magnitude Drop  : 1.4 mag
 Estimated Max. Duration   : 7.6 sec
 Object Mean Diameter      : 109 km  (src: astorb)
 Speed of the shadow       : 14.4 km/s
 Elongation to Moon & Sun  : 146° (sunlit = 12%), Sun = 154°
 Cross-track uncertainty   : 5.3 mas = 9 km = 0.09 path-width (1-sig)
 RUWE and duplicate source : 0.92 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#104

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

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