2022-07-21 / 4UC 438-112881 / (409) Aspasia
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Peter Englmaier | O+ | CCD | M405 | CH | GPS++ | 20:48:35 | 20:49:19.11 | 20:49:28.21 | 20:50:06 | 0.40 | 0.40 | 9.10 | 94.6 |
2 | show | Martin Gutekunst | O+ | CCD | L280 | DE | NTP+ | 20:48:32 | 20:49:01.22 | 20:49:15.05 | 20:49:50 | 0.09 | 0.09 | 13.83 | 143.8 |
3 | show | Manfred Simon | O+ | CCD | M203 | DE | NTP+ | 20:47:36 | 20:49:03.58 | 20:49:17.98 | 20:50:36 | 0.21 | 0.21 | 14.40 | 149.8 |
4 | show | Gregor Krannich | O+ | CCD | M350 | DE | GPS++ | 20:48:00 | 20:49:00.84 | 20:49:16.16 | 20:50:10 | 0.08 | 0.08 | 15.32 | 159.3 |
5 | show | Karl-Ludwig Bath | O+ | CCD | M180 | DE | NTP+ | 20:47:00 | 20:49:15.99 | 20:49:31.00 | 20:51:00 | 0.13 | 0.13 | 15.01 | 156.1 |
6 | show | Bernd Gaehrken | O+ | CCD | M400 | DE | RAD | 20:44:55 | 20:48:56.5 | 20:49:12.2 | 20:53:38 | 0.5 | 0.5 | 15.70 | 163.3 |
7 | show | P. Nosal et al | O+ | CCD | L100 | SK | NTP+ | 20:46:18 | 20:48:11.0 | 20:48:26.4 | 20:50:47 | 0.2 | 0.2 | 15.40 | 160.2 |
8 | show | Peter Delincak | O+ | CCD | M400 | SK | GPS++ | 20:48:00 | 20:48:13.98 | 20:48:20.69 | 20:48:35 | 0.04 | 0.04 | 6.71 | 69.8 |
9 | show | Jiri Kubanek | O+ | CCD | M200 | CZ | GPS++ | 20:47:06 | 20:48:45.63 | 20:48:54.15 | 20:51:09 | 0.12 | 0.12 | 8.52 | 88.6 |
10 | show | Jiri Polak | O+ | CCD | M303 | CZ | GPS++ | 20:46:43 | 20:48:44.66 | 20:48:45.04 | 20:50:43 | 0.03 | 0.05 | 0.38 | 4.0 |
11 | show | Lionel Rousselot | O- | CCD | M250 | FR | 20:47:52 | 20:51:53 |
11 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):JPL#124 : c101a374-f63a-4b07-9b01-8ea0ff8139ba [db: observed] |
JPL#124 : 6b559c84-64ba-4922-9467-9b19e50469f4 [db: observed] |
Using prediction c101a374-f63a-4b07-9b01-8ea0ff8139ba for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: Size = 193 x 162 km a',b' = 96.5, 80.9 km X0,Y0 = -10.8, 30.7 km Mean diameter = 177 km From 10 chords (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. |
Sky projection (artificial light) for occ. time: 2022-07-21, 20:48 UT (JD = 2459782.367)
DAMIT | Q | P (h) | λ, β | JD0 | JD-JD0 | φ0 | Version | Modified | Vol-equiv D | Cmnt |
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# 215 | None | 9.021 | 3°, 30° | 2.44431e6 | 15472.4 | 0.0° | None | 2011-04-11 | 173.0 +/- 17.0 km | 2011-03-28 |
# 715 | 4.0 | 9.021 | 4°, 29° | 2.44431e6 | 15472.4 | 0.0° | None | 2017-06-19 | 164.0 +/- 3.0 km | 2017-06-19 |
Image size: 300px. Transparent image background for copy & paste
Map with groundtrack and observer stations |
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Event Details |
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Occultation UUID [and DB] : c101a374-f63a-4b07-9b01-8ea0ff8139ba [observed] Occultation Date + Time : 2022-07-21 at 20:44:30 UT +/- 0.02 min [1] Object Designation : (409) Aspasia Orbit Class : MBA Star Designation : GDR3 4222824455452470016 Star Coordinates (ICRF) : RA = 20 20 16.8803, DE = -02 32 42.336 [2] Star Magnitudes : G = 11.6 mag, RP = 10.96 mag, BP = 12.06 mag Object Magnitude : V = 11.04 mag Estimated Magnitude Drop : 0.5 mag Estimated Max. Duration : 15.5 sec Object Mean Diameter : 162 km (src: astorb) Speed of the shadow : 10.4 km/s Elongation to Moon & Sun : 97° (sunlit = 37%), Sun = 162° Cross-track uncertainty : 3.3 mas = 3 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.93 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#124 Object is a Gaia mass determination target ! [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) |