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2025-10-03 / UCAC4 503-004006 / (1517) Beograd

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Marek Zawilski, Mieczyslaw Borkowski, +1 O+ VID M200 PL GPS 03:02:00 03:03:02.50 03:03:07.92 03:04:08 0.120 0.120 5.42 46.1
2 show Piotr Walczak O+ CCD M130 PL GPS 03:02:03 03:03:02.46 03:03:07.96 03:04:04 0.130 0.120 5.50 46.8
3 show Daniel Antuszewicz O- VID M300 PL NTP 03:01:56 :: :: 03:03:55
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

3 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):

JPL#71 : 816a3e70-ddb8-11f0-547e-fa12c7eef79e [db: observed]
Using prediction 816a3e70-ddb8-11f0-547e-fa12c7eef79e 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:
Circular profile fit was not successful ...








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).

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Map with groundtrack and observer stations
Event Details
Occultation UUID [and DB] : 816a3e70-ddb8-11f0-547e-fa12c7eef79e [observed] Occultation Date + Time : 2025-10-03 at 03:09:46 UT +/- 0.01 min [1] Object Designation : (1517) Beograd Orbit Class : MBA Star Designation : GDR3 0024901125166156288 Star Coordinates (ICRF) : RA = 02 36 34.1858, DE = +10 35 29.854 [2] Star Magnitudes : G = 12.82 mag, RP = 12.28 mag, BP = 13.19 mag Object Magnitude : V = 15.56 mag Estimated Magnitude Drop : 2.8 mag Estimated Max. Duration : 4.3 sec Object Mean Diameter : 36.2 km (src: astorb) Speed of the shadow : 8.5 km/s Elongation to Moon & Sun : 83° (sunlit = 80%), Sun = 150° Cross-track uncertainty : 1.0 mas = 1 km = 0.04 path-width (1-sig) RUWE and duplicate source : 0.94 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#71 Note : FP:true Object is a Gaia mass determination target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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