2011-09-20 / TYC 2764-01038-1 / (895) Helio
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Stefano Sposetti | O+ | VID | M280 | CH | GPS++ | 18:10:05 | 18:12:49.09 | 18:12:52.29 | 18:15:20 | 0.09 | 0.09 | 3.20 | 39.0 |
2 | show | Wolfgang Rothe | O+ | VID | M200 | DE | GPS++ | 18:08:59 | 18:11:42.5 | 18:12:00.4 | 18:15:06 | 0.7 | 0.7 | 17.90 | 218.4 |
3 | show | Pietro Baruffetti | O- | VID | M200 | IT | 18:11:30 | 18:14:30 | |||||||
4 | show | G. Bonatti et al | O- | CCD | M300 | IT | 18:12:50 | 18:13:15 | |||||||
5 | show | GB Casalnuovo et al | O- | VID | M300 | IT | 18:11:00 | 18:14:00 | |||||||
6 | show | Peter Lindner | O- | VID | M305 | DE | 18:06:57 | 18:12:18 |
6 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#96 : 7335f306-a31d-4a01-a6a2-d8c3624fe820 [db: observed] |
Using prediction 7335f306-a31d-4a01-a6a2-d8c3624fe820 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: X0,Y0 = 1677.3, 56.5 km Circular diameter = 233 km From 2 chords (VID) 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] : 7335f306-a31d-4a01-a6a2-d8c3624fe820 [observed] Occultation Date + Time : 2011-09-20 at 18:09:11 UT +/- 0.02 min [1] Object Designation : (895) Helio Orbit Class : MBA Star Designation : GDR3 1916308820000035328 Star Coordinates (ICRF) : RA = 23 15 15.7262, DE = +36 09 43.707 [2] Star Magnitudes : G = 12.88 mag, RP = 12.37 mag, BP = 13.23 mag Object Magnitude : V = 13.23 mag Estimated Magnitude Drop : 0.9 mag Estimated Max. Duration : 11.7 sec Object Mean Diameter : 142 km (src: astorb) Speed of the shadow : 12.2 km/s Elongation to Moon & Sun : 85° (sunlit = 48%), Sun = 142° Cross-track uncertainty : 3.3 mas = 5 km = 0.04 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#96 [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) |