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2021-08-10 / 4UC 448-069424 / (3317) Paris

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Oscar Canales O+ VID M280 ES GPS++ 21:40:01 21:41:02.24 21:41:08.28 21:42:04 0.28 0.16 6.04 82.7
2 show Eric Frappa O+ VID M203 FR GPS++ 21:39:48 21:40:44.56 21:40:51.96 21:42:00 0.08 0.08 7.40 101.4
3 show Pierre Le Cam O+ CCD M250 FR GPS++ 21:38:30 21:40:33.61 21:40:40.81 21:42:30 0.15 0.15 7.20 98.6
4 show Lionel Rousselot O+ CCD M250 FR GPS++ 21:38:31 21:40:32.97 21:40:38.84 21:42:33 0.05 0.05 5.87 80.4
5 show Jean-Louis Dumont O+ CCD M280 FR GPS+ 21:38:57 21:40:32.97 21:40:39.56 21:43:57 0.06 0.06 6.59 90.3
6 show Adrianus Verveen O+ CCD V112 NL NTP 21:40:00 21:40:06.83 21:40:12.24 21:44:59 0.18 0.18 5.41 74.1
7 show Esdert Edens O+ CCD M250 NL GPS++ 21:38:07 21:40:04.66 21:40:10.32 21:42:07 0.09 0.09 5.66 77.5
8 show D. Lafuente et al O- VID M500 ES 21:37:00 21:43:00
9 show Michel Boutet O- VID M300 FR 21:37:25 21:43:27
10 show Emmanuel Brochard O- VID M203 FR 21:38:07 21:43:11
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

10 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#69 : 80bbc3d6-6572-49dc-84e3-a85b2aaec889 [db: observed]
JPL#69 : 114b09e3-9567-4421-adf9-a94454839bdf [db: observed]

Using prediction 80bbc3d6-6572-49dc-84e3-a85b2aaec889 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 = 137 x 105 km
a',b' = 68.3, 52.3 km
X0,Y0 = -580.2, -46.7 km
Mean diameter = 120 km

From 7 chords (VID,CCD)








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Event Details
 Occultation UUID [and DB] : 80bbc3d6-6572-49dc-84e3-a85b2aaec889 [observed]

 Occultation Date + Time   : 2021-08-10 at 21:46:37 UT +/- 0.18 min  [1]
 Object Designation        : (3317) Paris
 Orbit Class               : JTRO
 Star Designation          : GDR3 4373668311091853312
 Star Coordinates (ICRF)   : RA = 17 31 39.4621, DE = -00 28 37.257  [2]
 Star Magnitudes           : G = 12.93 mag, RP = 12.09 mag, BP = 13.69 mag
 Object Magnitude          : V = 15.41 mag
 Estimated Magnitude Drop  : 2.6 mag
 Estimated Max. Duration   : 8.5 sec
 Object Mean Diameter      : 116 km  (src: astorb)
 Speed of the shadow       : 13.7 km/s
 Elongation to Moon & Sun  : 93° (sunlit = 6%), Sun = 121°
 Cross-track uncertainty   : 4.3 mas = 12 km = 0.11 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#69

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

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