2018-10-20 / 4UC 495-004305 / (27561) 2000 KJ1
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Peter Tickner | O+ | CCD | M300 | UK | GPS | 22:48:17 | 22:50:07.23 | 22:50:09.18 | 22:52:07 | 0.07 | 0.07 | 1.95 | 22.4 |
2 | show | Tim Haymes | O+ | VID | M300 | UK | GPS++ | 22:47:00 | 22:50:06.08 | 22:50:08.20 | 22:53:00 | 0.12 | 0.08 | 2.12 | 24.4 |
3 | show | Simon Kidd | O+ | CCD | M350 | UK | GPS | 22:48:30 | 22:50:00.52 | 22:50:02.06 | 22:51:30 | 0.03 | 0.03 | 1.54 | 17.7 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#48 : 4f9ea3bf-4ba4-44cc-95b9-8b3ca79c30b1 [db: observed] |
Using prediction 4f9ea3bf-4ba4-44cc-95b9-8b3ca79c30b1 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 28 x 9 km a',b' = 13.9, 4.4 km X0,Y0 = 1846.6, 35.0 km Mean diameter = 16 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] : 4f9ea3bf-4ba4-44cc-95b9-8b3ca79c30b1 [observed] Occultation Date + Time : 2018-10-20 at 22:49:36 UT +/- 0.03 min [1] Object Designation : (27561) 2000 KJ1 Orbit Class : MBA Star Designation : GDR3 0008863786002313984 Star Coordinates (ICRF) : RA = 02 56 47.3493, DE = +08 51 12.280 [2] Star Magnitudes : G = 13.19 mag, RP = 12.45 mag, BP = 13.79 mag Object Magnitude : V = 17.44 mag Estimated Magnitude Drop : 4.3 mag Estimated Max. Duration : 0.9 sec Object Mean Diameter : 11 km (src: astorb) Speed of the shadow : 11.5 km/s Elongation to Moon & Sun : 61° (sunlit = 86%), Sun = 162° Cross-track uncertainty : 3.7 mas = 6 km = 0.58 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#48 [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) |