2011-08-29 / 2UC 27934355 / (972) Cohnia
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | show | Joan Rovira | O+ | VID | M200 | ES | GPS++ | 21:35:24 | 21:39:27.40 | 21:39:31.20 | 21:39:41 | 0.48 | 0.48 | 3.80 | 26.6 |
2 | show | O. Canales/F. Campos | O+ | VID | M203 | ES | GPS++ | 21:36:45 | 21:39:55.23 | 21:40:05.01 | 21:42:04 | 0.12 | 0.12 | 9.78 | 68.5 |
3 | show | E. Frappa/A. Klotz | O- | CCD | M250 | FR | 21:38:04 | 21:41:14 | |||||||
4 | show | Fabrizio Ciabattari | O- | CCD | M500 | IT | 21:37:32 | 21:38:32 | |||||||
5 | show | Stefano Sposetti | O- | VID | M280 | CH | 21:35:00 | 21:43:30 |
5 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#60 : 52750670-57c6-4087-b6c3-f832e36a7696 [db: observed] |
Using prediction 52750670-57c6-4087-b6c3-f832e36a7696 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
---|
|
Auto-Fit Result: X0,Y0 = 509.9, 24.6 km Circular diameter = 78 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 |
---|
Event Details |
---|
Occultation UUID [and DB] : 52750670-57c6-4087-b6c3-f832e36a7696 [observed] Occultation Date + Time : 2011-08-29 at 21:40:21 UT +/- 0.03 min [1] Object Designation : (972) Cohnia Orbit Class : MBA Star Designation : GDR3 6904104304202644480 Star Coordinates (ICRF) : RA = 20 25 29.8352, DE = -11 23 03.930 [2] Star Magnitudes : G = 12.76 mag, RP = 12.28 mag, BP = 13.07 mag Object Magnitude : V = 13.59 mag Estimated Magnitude Drop : 1.3 mag Estimated Max. Duration : 10.9 sec Object Mean Diameter : 76 km (src: astorb) Speed of the shadow : 7.0 km/s Elongation to Moon & Sun : 139° (sunlit = 1%), Sun = 149° Cross-track uncertainty : 4.3 mas = 5 km = 0.07 path-width (1-sig) RUWE and duplicate source : 0.98 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#60 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0 |
More Data and Informations |
---|
(If error 404: link not valid which means no data available)
Aladin Sky Atlas |
---|
Aladin Lite direct link (has Gaia overlay) |