2022-02-08 / 4UC 387-054925 / (8917) Tianjindaxue
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Florian Signoret | O+ | VID | M200 | FR | GPS++ | 21:37:39 | 21:38:47.69 | 21:38:49.93 | 21:39:49 | 0.16 | 0.16 | 2.24 | 27.3 |
2 | show | Eric Frappa | O+ | VID | M203 | FR | GPS++ | 21:37:36 | 21:39:03.61 | 21:39:06.84 | 21:40:35 | 0.09 | 0.09 | 3.23 | 39.4 |
3 | show | Matthieu Conjat | O- | CCD | M400 | FR | 21:38:01 | 21:39:42 | |||||||
4 | show | Matthieu Conjat | O- | CCD | M500 | FR | 21:36:11 | 21:39:44 |
4 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#61 : 7538f382-49a8-4a4b-9401-cc13eb290858 [db: observed] |
Using prediction 7538f382-49a8-4a4b-9401-cc13eb290858 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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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). 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] : 7538f382-49a8-4a4b-9401-cc13eb290858 [observed] Occultation Date + Time : 2022-02-08 at 21:34:10 UT +/- 0.03 min [1] Object Designation : (8917) Tianjindaxue Orbit Class : MBA Star Designation : GDR3 3754213836644125440 Star Coordinates (ICRF) : RA = 10 31 03.5432, DE = -12 45 24.344 [2] Star Magnitudes : G = 12.25 mag, RP = 11.83 mag, BP = 12.52 mag Object Magnitude : V = 16.59 mag Estimated Magnitude Drop : 4.4 mag Estimated Max. Duration : 1.5 sec Object Mean Diameter : 18 km (src: astorb) Speed of the shadow : 12.2 km/s Elongation to Moon & Sun : 109° (sunlit = 53%), Sun = 149° Cross-track uncertainty : 5.7 mas = 10 km = 0.57 path-width (1-sig) RUWE and duplicate source : 1.28 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 |
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) |