2022-11-07 / 4UC 553-047127 / (375) Ursula
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Jordi Marco | O+ | CCD | M235 | ES | NTP+ | 05:17:31 | 05:19:30.40 | 05:19:35.69 | 05:21:17 | 0.02 | 0.02 | 5.29 | 100.0 |
2 | show | Joan Aragones | O+ | CCD | M200 | ES | NTP+ | 05:19:16 | 05:19:30.62 | 05:19:35.62 | 05:19:43 | 0.25 | 0.25 | 5.00 | 94.5 |
3 | show | Carles Schnabel | O+ | VID | M400 | ES | GPS++ | 05:18:16 | 05:19:29.74 | 05:19:33.98 | 05:20:32 | 0.01 | 0.01 | 4.24 | 80.1 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#92 : ffa226de-e3ce-4b19-a1b7-49376ca63333 [db: observed] |
Using prediction ffa226de-e3ce-4b19-a1b7-49376ca63333 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 98 x 10 km a',b' = 49.2, 5.1 km X0,Y0 = -552.2, 94.8 km Mean diameter = 32 km From 3 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 |
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Event Details |
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Occultation UUID [and DB] : ffa226de-e3ce-4b19-a1b7-49376ca63333 [observed] Occultation Date + Time : 2022-11-07 at 05:21:43 UT +/- 0.01 min [1] Object Designation : (375) Ursula Orbit Class : MBA Star Designation : GDR3 0627844336578802176 Star Coordinates (ICRF) : RA = 09 59 12.0081, DE = +20 24 52.125 [2] Star Magnitudes : G = 9.25 mag, RP = 8.95 mag, BP = 9.42 mag Object Magnitude : V = 13.66 mag Estimated Magnitude Drop : 4.4 mag Estimated Max. Duration : 5.7 sec Object Mean Diameter : 108 km (src: astorb) Speed of the shadow : 18.9 km/s Elongation to Moon & Sun : 115° (sunlit = 98%), Sun = 80° Cross-track uncertainty : 2.7 mas = 6 km = 0.06 path-width (1-sig) RUWE and duplicate source : 2.65 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#92 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0 |
More Data and Informations |
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(If error 404: link not valid which means no data available)
Aladin Sky Atlas |
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Aladin Lite direct link (has Gaia overlay) |