2022-07-23 / 4UC 329-129952 / (3240) Laocoon
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Faustino Garcia | O+ | CCD | M250 | ES | GPS++ | 22:32:30 | 22:33:16.3 | 22:33:19.8 | 22:34:29 | 0.5 | 1.0 | 3.50 | 40.9 |
2 | show | J.J. Castellani | O+ | VID | M400 | FR | GPS++ | 22:31:58 | 22:32:33.6 | 22:32:37.7 | 22:33:14 | 0.3 | 0.3 | 4.10 | 48.0 |
3 | show | P. Dupouy et al | O+ | CCD | M500 | FR | NTP | 22:32:04 | 22:32:39.8 | 22:32:44.8 | 22:33:47 | 0.5 | 0.5 | 5.00 | 58.5 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#51 : a03f0be7-468d-4295-8782-0b041c563e6a [db: observed] |
Using prediction a03f0be7-468d-4295-8782-0b041c563e6a for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Ellipse profile fit was not successful. Trying circular fit. Circular diameter = 56 km From 3 chords (VID,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] : a03f0be7-468d-4295-8782-0b041c563e6a [observed] Occultation Date + Time : 2022-07-23 at 22:33:01 UT +/- 0.07 min [1] Object Designation : (3240) Laocoon Orbit Class : JTRO Star Designation : GDR3 4065508603843627264 Star Coordinates (ICRF) : RA = 18 16 21.2966, DE = -24 14 06.023 [2] Star Magnitudes : G = 13.84 mag, RP = 12.93 mag, BP = 14.7 mag Object Magnitude : V = 16.95 mag Estimated Magnitude Drop : 3.2 mag Estimated Max. Duration : 2.5 sec Object Mean Diameter : 30 km (src: astorb) Speed of the shadow : 11.7 km/s Elongation to Moon & Sun : 155° (sunlit = 20%), Sun = 153° Cross-track uncertainty : 1.3 mas = 3 km = 0.12 path-width (1-sig) RUWE and duplicate source : 0.74 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#51 [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) |