2022-12-16 / 4UC 565-009808 / (21900) Orus
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | J. Desmars et al | O+ | CCD | M280 | FR | GPS++ | 01:02:02 | 01:06:53.7 | 01:06:57.4 | 01:12:02 | 0.3 | 0.3 | 3.70 | 57.0 |
2 | show | A. Leroy et al | O+ | CCD | M355 | FR | GPS++ | 01:04:56 | 01:06:54.5 | 01:06:57.5 | 01:08:56 | 0.4 | 0.4 | 3.00 | 46.2 |
2 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#37 : cfaee41b-55f7-4544-b43c-0ed47f6f11b4 [db: observed] |
Using prediction cfaee41b-55f7-4544-b43c-0ed47f6f11b4 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: X0,Y0 = 730.5, 25.1 km Circular diameter = 59 km From 2 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] : cfaee41b-55f7-4544-b43c-0ed47f6f11b4 [observed] Occultation Date + Time : 2022-12-16 at 01:10:53 UT +/- 0.06 min [1] Object Designation : (21900) Orus Orbit Class : JTRO Star Designation : GDR3 0052846553217624832 Star Coordinates (ICRF) : RA = 04 14 39.8882, DE = +22 56 35.891 [2] Star Magnitudes : G = 14.79 mag, RP = 13.88 mag, BP = 15.61 mag Object Magnitude : V = 16.88 mag Estimated Magnitude Drop : 2.2 mag Estimated Max. Duration : 2.2 sec Object Mean Diameter : 33 km (src: astorb) Speed of the shadow : 15.4 km/s Elongation to Moon & Sun : 104° (sunlit = 53%), Sun = 162° Cross-track uncertainty : 1.7 mas = 4 km = 0.15 path-width (1-sig) RUWE and duplicate source : 1.06 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#37 [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) |