2022-08-16 / 4UC 392-121453 / (909) Ulla
| # | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | show | Gianni Casalnuovo | O+ | CCD | M355 | IT | NTP | 21:26:20 | 21:26:47.93 | 21:26:55.81 | 21:27:20 | 0.18 | 0.18 | 7.88 | 108.0 |
| 2 | show | Martin Gutekunst | O+ | CCD | L280 | DE | NTP+ | 21:25:01 | 21:26:46.11 | 21:26:48.81 | 21:27:10 | 0.05 | 0.05 | 2.70 | 37.0 |
| 3 | show | Wolfgang Beisker | O+ | CCD | M280 | DE | GPS+ | 21:25:00 | 21:26:42.72 | 21:26:47.15 | 21:28:00 | 0.05 | 0.05 | 4.43 | 60.7 |
| 4 | show | Jiri Kubanek | O+ | CCD | M200 | CZ | GPS++ | 21:24:27 | 21:26:27.85 | 21:26:35.64 | 21:28:30 | 0.06 | 0.04 | 7.79 | 106.7 |
| 5 | show | Jiri Polak | O+ | CCD | M303 | CZ | GPS++ | 21:24:31 | 21:26:29.36 | 21:26:36.37 | 21:28:31 | 0.04 | 0.04 | 7.01 | 96.0 |
| 6 | show | Jan Manek | O+ | CCD | M356 | CZ | GPS++ | 21:24:26 | 21:26:23.62 | 21:26:30.31 | 21:28:26 | 0.02 | 0.02 | 6.69 | 91.7 |
| 7 | show | Martin Masek | O+ | CCD | M200 | CZ | NTP | 21:25:01 | 21:26:20.06 | 21:26:27.26 | 21:27:31 | 0.10 | 0.10 | 7.20 | 98.6 |
| 8 | show | Julia Perla | O+ | CCD | M400 | PL | GPS+ | 21:25:28 | 21:26:09.44 | 21:26:15.05 | 21:27:01 | 0.25 | 0.25 | 5.61 | 76.9 |
| 9 | show | Matthieu Conjat | O- | CCD | M400 | FR | 21:26:39 | 21:28:10 | |||||||
| 10 | show | Manfred Simon | O- | CCD | M203 | DE | 21:25:50 | 21:27:51 | |||||||
| 11 | show | Gregor Krannich | O- | CCD | M350 | DE | 21:25:01 | 21:28:01 |
11 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):| JPL#128 : 9b32485f-692b-4752-a8c0-adc851738868 [db: observed] |
| JPL#128 : cd98f99b-8948-4543-91dd-a83acbf29916 [db: observed] |
| JPL#128 : 409f8e31-6912-42ec-8e6b-8ef4135d51f8 [db: observed] |
Using prediction 9b32485f-692b-4752-a8c0-adc851738868 for map and profile fit
| Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 117 x 103 km a',b' = 58.6, 51.5 km X0,Y0 = 2858.0, 19.5 km Mean diameter = 110 km From 8 chords (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] : 9b32485f-692b-4752-a8c0-adc851738868 [observed] Occultation Date + Time : 2022-08-16 at 21:30:34 UT +/- 0.03 min [1] Object Designation : (909) Ulla Orbit Class : MBA Star Designation : GDR3 6880254488246038016 Star Coordinates (ICRF) : RA = 20 20 06.2146, DE = -11 45 16.078 [2] Star Magnitudes : G = 12.05 mag, RP = 11.21 mag, BP = 12.79 mag Object Magnitude : V = 13.84 mag Estimated Magnitude Drop : 2.0 mag Estimated Max. Duration : 8.5 sec Object Mean Diameter : 116 km (src: astorb) Speed of the shadow : 13.7 km/s Elongation to Moon & Sun : 83° (sunlit = 72%), Sun = 159° Cross-track uncertainty : 1.0 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#128 [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) |