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2025-12-31 / UCAC4 498-017796 / (107) Camilla

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Alfonso Noschese O+ VID M500 IT GPS 23:59:47 00:01:13.1 00:01:26.6 00:02:45 0.300 0.200 13.50 175.5
2 show Alfonso Noschese O+ VID M450 IT GPS 23:59:46 00:01:12.7 00:01:24.48 00:02:45 0.200 0.180 11.78 153.1
3 show Carles Schnabel O+ VID M400 ES GPS 00:00:34 00:02:27.2 00:02:43.6 00:04:36 0.300 0.300 16.40 213.2
4 show Jorge JUAN, Carles Schnabel O+ VID M410 ES GPS 00:00:33 00:02:27.83 00:02:44.7 00:04:12 0.080 0.200 16.87 219.3
5 show Antoni Selva, Carlos Perello O+ VID M500 ES GPS 00:01:35 00:02:25.76 00:02:42.87 00:03:35 0.150 0.150 17.11 222.4
6 show Deborah Smith O- VID M300 ES GPS 00:01:50 :: :: 00:03:50
7 show Deborah Smith O- VID M250 ES GPS 00:01:55 :: :: 00:03:55
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

7 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL149 : 82576250-d997-11f1-43f3-7a17bf133d07 [db: observed]

Using prediction 82576250-d997-11f1-43f3-7a17bf133d07 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 = 251 x 143 km
a',b' = 125.4, 71.5 km
X0,Y0 = -456.1, 40.6 km
Mean diameter = 189 km

From 5 chords (VID)








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: 2025-12-31, 00:01 UT (JD = 2461040.501)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 151None4.844 73°, 54° 2.44463681485e616403.70.0° size from AO is 227+/-24 km2013-07-23 214.0 +/- 28.0 km 2011-03-28
# 18134.04.844 76°, 55° 2.44463681485e616403.70.0° None2017-06-19 260.0 +/- 6.0 km 2017-06-14
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] : 82576250-d997-11f1-43f3-7a17bf133d07 [observed]

 Occultation Date + Time   : 2025-12-31 at 00:03:26 UT +/- 0.01 min  [1]
 Object Designation        : (107) Camilla
 Orbit Class               : MBA
 Star Designation          : GDR3 3335695902447119872
 Star Coordinates (ICRF)   : RA = 05 55 19.5192, DE = +09 27 58.500  [2]
 Star Magnitudes           : G = 13.54 mag, RP = 12.64 mag, BP = 14.38 mag
 Object Magnitude          : V = 11.98 mag
 Estimated Magnitude Drop  : 0.2 mag
 Estimated Max. Duration   : 17.2 sec
 Object Mean Diameter      : 222.6 km  (src: astorb)
 Speed of the shadow       : 13.0 km/s
 Elongation to Moon & Sun  : 41° (sunlit = 84%), Sun = 162°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.08 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL149
 Note                      : FP:true

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

More Data and Informations
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