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2019-01-02 / 4UC 518-025559 / (239) Adrastea

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Matthieu Conjat O+ CCD M400 FR NTP 22:44:15 22:45:16.61 22:45:17.39 22:46:16 0.13 0.05 0.78 8.3
2 show Matthieu Conjat O+ CCD M400 FR NTP 22:44:15 22:45:17.54 22:45:20.24 22:46:16 0.10 0.05 2.70 28.9
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#58 : 67fcef15-fcbe-44d9-ad4a-44e03d6241f0 [db: observed]

Using prediction 67fcef15-fcbe-44d9-ad4a-44e03d6241f0 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 ...








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).

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Sky projection (artificial light) for occ. time: 2019-01-02, 22:45 UT (JD = 2458486.448)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 1426None18.472 226°, -70° 2.45076e67726.40.0° NoneNone not scaled 2016-01-12
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] : 67fcef15-fcbe-44d9-ad4a-44e03d6241f0 [observed]

 Occultation Date + Time   : 2019-01-02 at 22:43:55 UT +/- 0.01 min  [1]
 Object Designation        : (239) Adrastea
 Orbit Class               : MBA
 Star Designation          : GDR3 3332351089294458368
 Star Coordinates (ICRF)   : RA = 06 25 47.8599, DE = +13 26 44.877  [2]
 Star Magnitudes           : G = 12.09 mag, RP = 11.85 mag, BP = 12.22 mag
 Object Magnitude          : V = 13.99 mag
 Estimated Magnitude Drop  : 2.1 mag
 Estimated Max. Duration   : 3.9 sec
 Object Mean Diameter      : 42 km  (src: astorb)
 Speed of the shadow       : 10.7 km/s
 Elongation to Moon & Sun  : 151° (sunlit = 9%), Sun = 169°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.74 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#58

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

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