2023-11-07 / UCAC4 546-017448 / (4489) Dracius
# | OBS | Observer | Occ | Meth. | Instr. | CC | TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
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1 | show | Oscar Canales | O+ | VID | M280 | ES | GPS | 20:47:11 | 20:49:11.75 | 20:49:18.07 | 20:51:11 | 0.08 | 0.08 | 6.32 | 70.8 |
2 | show | Florian Signoret | O+ | VID | T200 | FR | GPS | 20:38:31 | 20:48:49.270 | 20:48:58.970 | 20:53:51 | 0.100 | 0.100 | 9.70 | 108.6 |
2 observations found in db: sodis
Available (probably) matching predictions (click on the link to switch):JPL#65 : d8a24e9b-60dc-4e81-b170-937f67837300 [db: observed] |
Using prediction d8a24e9b-60dc-4e81-b170-937f67837300 for map and profile fit
Ellipse and circular profile fits to the timings (chords) |
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Auto-Fit Result: X0,Y0 = -724.6, 90.3 km Circular diameter = 116 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. |
Sky projection (artificial light) for occ. time: 2023-11-07, 20:48 UT (JD = 2460256.367)
DAMIT | Q | P (h) | λ, β | JD0 | JD-JD0 | φ0 | Version | Modified | Vol-equiv D | Cmnt |
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# 4185 | 1.0 | 12.584 | 136°, -27° | 2.451136e6 | 9120.4 | 0.0° | None | 2019-09-26 | not scaled | 2019-05-07 |
![DAMIT #4185](/media_cora/povray/2460256.3666666667_2387_4185_pov.png)
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] : d8a24e9b-60dc-4e81-b170-937f67837300 [observed] Occultation Date + Time : 2023-11-07 at 20:40:40 UT +/- 0.08 min [1] Object Designation : (4489) Dracius Orbit Class : JTRO Star Designation : GDR3 3397890464866839168 Star Coordinates (ICRF) : RA = 05 39 04.2495, DE = +19 00 38.022 [2] Star Magnitudes : G = 11.27 mag, RP = 10.66 mag, BP = 11.7 mag Object Magnitude : V = 16.19 mag Estimated Magnitude Drop : 4.9 mag Estimated Max. Duration : 8.3 sec Object Mean Diameter : 93 km (src: astorb) Speed of the shadow : 11.2 km/s Elongation to Moon & Sun : 78° (sunlit = 27%), Sun = 140° Cross-track uncertainty : 8.0 mas = 23 km = 0.26 path-width (1-sig) RUWE and duplicate source : 5.35 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#65 [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) |