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2020-11-08 / 4UC 410-090056 / (1712) Angola

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Matthieu Conjat O+ CCD M400 FR NTP 18:32:02 18:32:57.93 18:32:59.55 18:33:35 0.51 0.52 1.62 57.3
2 show Pietro Baruffetti O+ VID M300 IT GPS++ 18:31:36 18:33:01.27 18:33:02.87 18:34:36 0.08 0.08 1.60 56.6
3 show Carles Schnabel O- VID M400 ES 18:31:07 18:34:47
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#70 : df696560-6345-40ce-a039-bc211c687c2d [db: observed]
JPL#70 : cd4cab83-346e-40bb-9ae8-47655ad47cd0 [db: observed]

Using prediction df696560-6345-40ce-a039-bc211c687c2d 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:
X0,Y0 = 94.3, 37.5 km
Circular diameter = 57 km

From 2 chords (VID,CCD)








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: 2020-11-08, 18:32 UT (JD = 2459162.272)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 46881.011.531 347°, -6° 2.45723e61932.30.0° None2020-10-05 not scaled 2019-10-23
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] : df696560-6345-40ce-a039-bc211c687c2d [observed]

 Occultation Date + Time   : 2020-11-08 at 18:31:12 UT +/- 0.01 min  [1]
 Object Designation        : (1712) Angola
 Orbit Class               : MBA
 Star Designation          : GDR3 4251856858233074432
 Star Coordinates (ICRF)   : RA = 18 46 12.7497, DE = -08 00 44.428  [2]
 Star Magnitudes           : G = 12.87 mag, RP = 11.74 mag, BP = 14.19 mag
 Object Magnitude          : V = 15.78 mag
 Estimated Magnitude Drop  : 3.0 mag
 Estimated Max. Duration   : 1.7 sec
 Object Mean Diameter      : 60 km  (src: astorb)
 Speed of the shadow       : 35.4 km/s
 Elongation to Moon & Sun  : 138° (sunlit = 48%), Sun = 56°
 Cross-track uncertainty   : 2.0 mas = 4 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 1.33 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#70

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

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