2021-07-10 / 4UC 308-181892 / (884) Priamus
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Matthieu Conjat | O+ | CCD | M400 | FR | NTP | 21:26:00 | 21:26:56.20 | 21:26:59.43 | 21:27:51 | 0.51 | 0.51 | 3.23 | 44.3 |
2 | show | Luana Liberato | O+ | CCD | M500 | FR | GPS | 21:20:51 | 21:26:59.07 | 21:27:01.45 | 21:28:36 | 0.18 | 0.15 | 2.38 | 32.6 |
3 | show | Simon Kidd | O+ | CCD | M350 | UK | GPS++ | 21:26:40 | 21:27:20.65 | 21:27:25.34 | 21:28:08 | 0.12 | 0.12 | 4.69 | 64.3 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#59 : 1e39792d-99fc-448e-aa55-b266e1d49645 [db: observed] |
Using prediction 1e39792d-99fc-448e-aa55-b266e1d49645 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 150 x 74 km a',b' = 75.1, 37.2 km X0,Y0 = -1044.9, 15.7 km Mean diameter = 106 km From 3 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] : 1e39792d-99fc-448e-aa55-b266e1d49645 [observed] Occultation Date + Time : 2021-07-10 at 21:24:18 UT +/- 0.05 min [1] Object Designation : (884) Priamus Orbit Class : JTRO Star Designation : GDR3 4050815859969538560 Star Coordinates (ICRF) : RA = 18 08 45.2907, DE = -28 26 12.357 [2] Star Magnitudes : G = 12.52 mag, RP = 12.04 mag, BP = 12.84 mag Object Magnitude : V = 15.09 mag Estimated Magnitude Drop : 2.7 mag Estimated Max. Duration : 4.6 sec Object Mean Diameter : 63 km (src: astorb) Speed of the shadow : 13.7 km/s Elongation to Moon & Sun : 154° (sunlit = 1%), Sun = 162° Cross-track uncertainty : 2.7 mas = 6 km = 0.11 path-width (1-sig) RUWE and duplicate source : 0.68 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#59 [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) |