2021-04-10 / 4UC 565-032726 / (1015) Christa
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Jiri Polak | O+ | CCD | M303 | CZ | GPS++ | 19:32:17 | 19:34:15.58 | 19:34:20.08 | 19:36:16 | 0.44 | 0.44 | 4.50 | 95.4 |
2 | show | Michal Rottenborn | O+ | CCD | M254 | CZ | GPS++ | 19:34:15 | 19:34:15.30 | 19:34:20.10 | 19:36:17 | 0.48 | 0.48 | 4.80 | 101.8 |
3 | show | Karel Halir | O? | VID | M507 | CZ | GPS++ | 19:32:18 | 19:34:18.76 | 19:34:20.61 | 19:36:18 | 0.06 | 0.06 | 1.85 | 39.2 |
3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#125 : 17b25a07-333d-4e54-a5ab-d12ad02bff14 [db: observed] |
Using prediction 17b25a07-333d-4e54-a5ab-d12ad02bff14 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 125 x 12 km a',b' = 62.6, 5.9 km X0,Y0 = 159.3, 23.1 km Mean diameter = 39 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] : 17b25a07-333d-4e54-a5ab-d12ad02bff14 [observed] Occultation Date + Time : 2021-04-10 at 19:31:55 UT +/- 0.01 min [1] Object Designation : (1015) Christa Orbit Class : MBA Star Designation : GDR3 3379538967261017728 Star Coordinates (ICRF) : RA = 06 48 38.6696, DE = +22 54 10.653 [2] Star Magnitudes : G = 15.92 mag, RP = 15.49 mag, BP = 16.21 mag Object Magnitude : V = 15.36 mag Estimated Magnitude Drop : 0.5 mag Estimated Max. Duration : 4.6 sec Object Mean Diameter : 97 km (src: astorb) Speed of the shadow : 21.2 km/s Elongation to Moon & Sun : 94° (sunlit = 2%), Sun = 80° Cross-track uncertainty : 0.8 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#125 [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) |