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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#76 : 1ac0f370-ddb4-11f0-547e-bde9a85fb657 [db: observed]
JPL#76 : 1ac11a80-ddb4-11f0-547e-7d2a76ff67bc [db: observed]
Using prediction 1ac11a80-ddb4-11f0-547e-7d2a76ff67bc 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 = 104 x 46 km
a',b' = 52.2, 22.8 km
X0,Y0 = 3135.1, 26.2 km
Mean diameter = 69 km

From 8 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.

Map with groundtrack and observer stations
Event Details
Occultation UUID [and DB] : 1ac11a80-ddb4-11f0-547e-7d2a76ff67bc [observed] Occultation Date + Time : 2023-09-06 at 20:26:31 UT +/- 0.01 min [1] Object Designation : (318) Magdalena Orbit Class : MBA Star Designation : GDR3 2616104269786516864 Star Coordinates (ICRF) : RA = 22 17 08.5426, DE = -09 06 42.719 [2] Star Magnitudes : G = 14.47 mag, RP = 13.16 mag, BP = 14.16 mag Object Magnitude : V = 14.23 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 3.2 sec Object Mean Diameter : 43.6 km (src: astorb) Speed of the shadow : 13.7 km/s Elongation to Moon & Sun : 100° (sunlit = 51%), Sun = 169° Cross-track uncertainty : 0.6 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.43 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#76 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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