2022-08-16 / 4UC 323-217285 / (447) Valentine
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | O. Canales et al | O+ | CCD | M200 | ES | GPS++ | 23:32:47 | 23:35:38.7 | 23:35:44.7 | 23:38:39 | 1.7 | 1.7 | 6.00 | 61.2 |
2 | show | Anna Marciniak | O+ | CCD | M350 | PL | GPS+ | 23:31:03 | 23:34:08.2 | 23:34:17.3 | 23:36:03 | 1.5 | 1.5 | 9.10 | 92.8 |
3 | show | Jiri Polak | O- | CCD | M303 | CZ | 23:32:17 | 23:36:17 | |||||||
4 | show | Jiri Kubanek | O- | CCD | M303 | CZ | 23:32:15 | 23:36:18 |
4 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#82 : e7de8585-444d-44d5-9023-c8ff4ec2f63e [db: observed] |
Using prediction e7de8585-444d-44d5-9023-c8ff4ec2f63e for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: X0,Y0 = 1225.8, 82.5 km Circular diameter = 184 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] : e7de8585-444d-44d5-9023-c8ff4ec2f63e [observed] Occultation Date + Time : 2022-08-16 at 23:39:23 UT +/- 0.02 min [1] Object Designation : (447) Valentine Orbit Class : MBA Star Designation : GDR3 6848220762428787200 Star Coordinates (ICRF) : RA = 20 24 40.3679, DE = -25 28 52.404 [2] Star Magnitudes : G = 14.47 mag, RP = 13.8 mag, BP = 14.7 mag Object Magnitude : V = 13.5 mag Estimated Magnitude Drop : 0.4 mag Estimated Max. Duration : 7.8 sec Object Mean Diameter : 80 km (src: astorb) Speed of the shadow : 10.2 km/s Elongation to Moon & Sun : 86° (sunlit = 72%), Sun = 158° Cross-track uncertainty : 1.3 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#82 [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) |