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2020-07-14 / 4UC 401-089932 / (490) Veritas

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Jiri Polak O+ CCD M303 CZ GPS++ 23:00:42 23:02:34.26 23:02:43.37 23:04:42 0.10 0.10 9.11 111.1
2 show Jiri Kubanek O+ CCD M203 CZ GPS++ 23:00:39 23:02:31.90 23:02:41.26 23:04:47 0.18 0.18 9.36 114.2
3 show Karel Halir O+ VID M507 CZ GPS++ 23:00:43 23:02:32.67 23:02:41.87 23:04:41 0.06 0.06 9.20 112.2
4 show Jan Manek O+ CCD M205 CZ GPS++ 23:00:35 23:02:26.07 23:02:35.68 23:04:35 0.20 0.20 9.61 117.2
5 show Wojciech Burzynski O+ CCD M200 PL GPS++ 23:00:57 23:01:44.80 23:01:51.81 23:04:06 0.50 0.50 7.01 85.5
6 show J.J. Castellani O- VID M400 FR 23:03:04 23:05:14
7 show Petr Zeleny O- CCD M254 CZ 23:00:00 23:05:00
8 show Marcin Filipek O- VID M250 PL 22:59:00 23:04:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

8 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#62 : 66cda37b-7808-44a6-8de6-7f31ee4beae5 [db: observed]

Using prediction 66cda37b-7808-44a6-8de6-7f31ee4beae5 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:
Size = 123 x 99 km
a',b' = 61.4, 49.5 km
X0,Y0 = 1165.8, 31.5 km
Mean diameter = 110 km

From 5 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: 2020-07-14, 23:02 UT (JD = 2459045.460)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 833None7.928 56°, 34° 2.450995e68050.50.0° NoneNone not scaled 2016-01-04
# 834None7.928 231°, 43° 2.450995e68050.50.0° 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] : 66cda37b-7808-44a6-8de6-7f31ee4beae5 [observed]

 Occultation Date + Time   : 2020-07-14 at 23:05:19 UT +/- 0.02 min  [1]
 Object Designation        : (490) Veritas
 Orbit Class               : MBA
 Star Designation          : GDR3 4203279197460244352
 Star Coordinates (ICRF)   : RA = 18 48 16.8521, DE = -09 56 19.382  [2]
 Star Magnitudes           : G = 12.65 mag, RP = 11.82 mag, BP = 13.38 mag
 Object Magnitude          : V = 13.29 mag
 Estimated Magnitude Drop  : 1.1 mag
 Estimated Max. Duration   : 9.5 sec
 Object Mean Diameter      : 116 km  (src: astorb)
 Speed of the shadow       : 12.2 km/s
 Elongation to Moon & Sun  : 123° (sunlit = 32%), Sun = 163°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.86 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#62

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

More Data and Informations
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