469514 (2003 QA91)
System parameters
| Heliocentric orbit | Photometry |
Position 2022/03/21 22:19 UTC |
| DES class = CLASSICAL |
HV = 6.2±0.5 |
+23:20:05.46 -06:35:22.7 |
| <a> = 44.45 (AU) |
V = 22.6 (V2 = 23.4) |
Uncertainty = 0.1 (arcsec) |
| <e> = 0.077 |
Δmag = 0.10 |
Rates: +3.485, +1.428 ("/hr) |
| <i> = 1.03 (degrees) |
B-V = NULL |
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| Perihelion = 2082 |
V-R = NULL |
Opposition: September |
| Aphelion = 2232 |
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Astrometric observations
| Observation time (UTC) | Observatory/Instrument | RA | DEC |
Δ (AU) | Δx (arcsec) |
Δx error | Δy (arcsec) |
Δy error |
| 2006/06/19 08.85624 |
HST/ACS-HRC |
+22:11:11.31 |
-13:01:58.1 |
44.57954 |
-0.01653 |
0.00159 |
+0.04690 |
0.00140 |
| 2009/09/15 16.58847 |
HST/WFC3-UVIS |
+22:19:59.75 |
-12:21:08.9 |
43.92137 |
+0.04750 |
0.00173 |
-0.01279 |
0.00239 |
| 2009/09/16 00.95569 |
HST/WFC3-UVIS |
+22:19:58.35 |
-12:21:16.6 |
43.92349 |
+0.04699 |
0.00299 |
-0.00462 |
0.00441 |
| 2009/09/17 03.31792 |
HST/WFC3-UVIS |
+22:19:53.97 |
-12:21:40.6 |
43.93040 |
-0.03971 |
0.00169 |
-0.02924 |
0.00244 |
| 2010/04/15 00.46708 |
HST/WFC3-UVIS |
+22:28:01.75 |
-11:32:15.7 |
45.46103 |
+0.03196 |
0.00343 |
-0.03595 |
0.00301 |
| 2010/04/19 01.93792 |
HST/WFC3-UVIS |
+22:28:17.46 |
-11:30:54.5 |
45.40616 |
+0.01240 |
0.00307 |
-0.04722 |
0.00294 |
| 2014/08/19 10.85962 |
KeckII/NIRC2 |
+22:45:15.76 |
-10:03:53.0 |
43.54349 |
-0.03934 |
0.00300 |
+0.02644 |
0.00300 |
| 2015/09/05 09.82748 |
KeckII/NIRC2 |
+22:48:45.59 |
-09:44:53.3 |
43.45483 |
+0.02057 |
0.00300 |
+0.04412 |
0.00300 |
| 2016/08/06 11.71549 |
KeckII/NIRC2 |
+22:55:34.08 |
-09:04:51.8 |
43.51171 |
-0.03887 |
0.00300 |
+0.03028 |
0.00300 |
| 2017/08/25 08.97760 |
KeckII/NIRC2 |
+22:59:01.09 |
-08:45:52.8 |
43.35326 |
-0.04327 |
0.00300 |
+0.02045 |
0.00300 |
| 2017/08/26 09.81153 |
KeckII/NIRC2 |
+22:58:56.75 |
-08:46:20.5 |
43.35028 |
-0.04919 |
0.00450 |
-0.00605 |
0.00300 |
| plus proprietary data |
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Orbital knowledge
Comments: Orbit published here.
| Parameter |
Value |
Units |
| P period | 10.1089±0.0003 | days |
| a semimajor axis | 1590±40 | kilometers |
| e eccentricity | 0.02±0.02 | dimensionless |
Breaking the mirror ambiguity...
Last updated: 2022/03/21 22:19 UTC