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2023-09-06 / G221708.5-090643 / (318) Magdalena

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Carles Schnabel O+ VID M400 ES GPS 20:25:02 20:26:22.6 20:26:29.2 20:28:08 0.4 0.6 6.60 90.4
2 show Antoni Selva, Carlos Perello O+ VID M500 ES GPS 20:24:26 20:26:21.718 20:26:28.587 20:27:25 0.148 0.148 6.87 94.1
3 show joan rovira O+ VID M250 ES GPS 20:24:30 20:26:20.00 20:26:26.40 20:29:45 0.5 0.3 6.40 87.7
4 show Andreas Schweizer, Stefan MEISTER O+ VID M500 CH GPS 20:24:57 20:25:22.150 20:25:28.650 20:25:57 0.301 0.301 6.50 89.0
5 show Sven Andersson, Martina Haupt O+ VID M360 DE GPS 20:23:51 20:24:38.9 20:24:43.6 20:25:51 0.4 0.9 4.70 64.4
6 show Olaf Hofschulz O+ VID T432 DE GPS 20:24:12 20:24:38.1 20:24:43.5 20:25:11 0.4 0.6 5.40 74.0
7 show Nikolai Wuensche O+ VID M300 DE GPS 20:21:29 20:24:36.3 20:24:42.0 20:27:45 0.3 0.2 5.70 78.1
8 show Konrad Guhl O+ CCD ?306 DE GPS 20:23:04 20:24:35.300 20:24:41.5 20:25:41 1.0 0.7 6.20 84.9
9 show Stefano Sposetti O- VID M420 CH GPS 20:22:30 20:28:30
10 show Gregor Krannich O- VID M350 DE GPS 20:23:50 20:26:40
11 show Karl-Ludwig Bath O- CCD T180 DE NTP 20:20:55 20:29:03
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

11 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#61 : 8ae6f357-2261-4f41-b5aa-f54ddd85e55b [db: observed]
JPL#61 : 58356a9a-3600-4495-bce8-ac09a6e8ddc6 [db: observed]

Using prediction 8ae6f357-2261-4f41-b5aa-f54ddd85e55b 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 = 103 x 44 km
a',b' = 51.3, 22.1 km
X0,Y0 = 2738.8, 1337.1 km
Mean diameter = 67 km

From 8 chords (CCD,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).
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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : 8ae6f357-2261-4f41-b5aa-f54ddd85e55b [observed]

 Occultation Date + Time   : 2023-09-06 at 20:25:56 UT +/- 0.02 min  [1]
 Object Designation        : (318) Magdalena
 Orbit Class               : MBA
 Star Designation          : GDR3 2616104269787016192
 Star Coordinates (ICRF)   : RA = 22 17 08.5305, DE = -09 06 41.934  [2]
 Star Magnitudes           : G = 14.48 mag, RP = 13.21 mag, BP = 14.18 mag
 Object Magnitude          : V = 14.25 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 3.2 sec
 Object Mean Diameter      : 43 km  (src: astorb)
 Speed of the shadow       : 13.7 km/s
 Elongation to Moon & Sun  : 100° (sunlit = 51%), Sun = 169°
 Cross-track uncertainty   : 1.7 mas = 2 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 1.46 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#61

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

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