171576 (1999 VP11)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5836605346 ± 1.64e-08
Semi-major axis (a)1.0857331459 AU ± 8.70e-10
Inclination (i)17.27622291° ± 2.88e-06
Long. of Asc. Node (Ω)208.06025056° ± 1.58e-06
Arg. of Perihelion (ω)61.76358487° ± 2.22e-06
Mean Anomaly (M)99.66941613° ± 2.85e-06
Mean Motion (n)0.8712195884°/day ± 1.05e-09
Perihelion dist (q)0.45203356 AU ± 1.78e-08
Aphelion dist (Q)1.71943273 AU ± 1.78e-08
Orbital Period1.13131786 yr ± 1.36e-09
Physical Parameters
H (abs. magnitude)18.68
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.312″
Uncertainty0
Orbit TypeApollo
MOID0.003011 AU
Observations Used525
Radar Obs Used6
Gaia Obs Used9
Oppositions2
Arc Total1999-2026
First Observation Used1999-11-07
Last Observation Used2026-01-12
Observations (569)
Date Type RA Dec Mag Band Observatory
2015-12-22 06:10:22 C 05 58 34.04 -10 34 19.1 u 807
2015-12-22 06:13:53 C 05 58 33.66 -10 34 19.9 u 807
2015-12-22 06:17:08 C 05 58 33.31 -10 34 20.7 u 807
2015-12-22 06:20:57 C 05 58 32.89 -10 34 21.2 u 807
2015-12-23 05:50:38 C 05 55 59.48 -10 38 52.0 u 807
2015-12-23 05:53:59 C 05 55 59.10 -10 38 52.1 u 807
2015-12-23 05:57:31 C 05 55 58.72 -10 38 52.8 u 807
2015-12-23 06:00:43 C 05 55 58.37 -10 38 54.0 u 807
2015-12-23 06:04:14 C 05 55 58.00 -10 38 54.3 u 807
2016-01-16 07:42:41 C 05 02 02.744 -09 23 00.74 L F51
2016-01-16 07:57:43 C 05 02 01.695 -09 22 55.08 L F51
2016-01-16 08:13:34 C 05 02 00.576 -09 22 49.01 L F51
2016-01-16 08:28:51 C 05 01 59.495 -09 22 43.08 L F51
2016-11-08 08:35:41 C 05 55 45.68 -00 07 32.4 q 703
2016-11-08 08:44:20 C 05 55 44.80 -00 07 40.3 q 703
2016-11-08 09:01:40 C 05 55 42.95 -00 07 58.0 q 703
2016-12-05 09:14:29 C 04 38 20.04 -07 28 45.7 R G45
2016-12-05 09:14:34 C 04 38 19.99 -07 28 45.8 R G45
2016-12-05 09:31:36 C 04 38 17.99 -07 28 49.5 R G45
2016-12-05 09:31:42 C 04 38 18.00 -07 28 49.7 R G45
2016-12-05 09:38:59 C 04 38 17.16 -07 28 52.5 R G45
2016-12-05 09:39:04 C 04 38 17.13 -07 28 52.9 R G45
2016-12-05 09:45:53 C 04 38 16.33 -07 28 54.8 R G45
2016-12-09 04:13:15 C 04 28 10.56 -07 49 39.5 R G45
2016-12-09 04:14:01 C 04 28 10.48 -07 49 39.4 R G45
2016-12-09 04:20:20 C 04 28 09.81 -07 49 40.5 R G45
2016-12-09 04:27:23 C 04 28 09.02 -07 49 42.0 R G45
2016-12-09 04:34:34 C 04 28 08.18 -07 49 43.0 R G45
2016-12-09 04:41:28 C 04 28 07.46 -07 49 43.7 R G45
2016-12-09 04:42:15 C 04 28 07.37 -07 49 44.4 R G45
2016-12-09 04:48:54 C 04 28 06.62 -07 49 45.5 R G45
2016-12-24 04:21:38 C 03 56 46.35 -07 40 46.7 R G45
2016-12-24 04:28:46 C 03 56 45.86 -07 40 44.9 R G45
2016-12-24 04:43:05 C 03 56 44.87 -07 40 42.7 R G45
2016-12-24 04:50:31 C 03 56 44.37 -07 40 41.3 R G45
2017-01-16 05:34:01 C 03 37 47.173 -04 39 01.08 L F51
2017-01-16 05:50:02 C 03 37 47.026 -04 38 54.49 L F51
2017-01-16 06:06:03 C 03 37 46.887 -04 38 47.87 L F51
2017-01-16 06:22:07 C 03 37 46.733 -04 38 41.17 L F51
2017-01-28 05:44:47 C 03 38 55.575 -02 34 39.98 L F51
2017-01-28 06:00:50 C 03 38 55.768 -02 34 33.00 L F51
2017-01-28 06:16:51 C 03 38 55.959 -02 34 25.83 L F51
2017-01-28 06:32:50 C 03 38 56.167 -02 34 18.88 L F51
2017-10-22 19:25:20 n 19 58 53.05 -27 41 06.1 q 619
2017-10-22 19:48:49 n 20 02 00.60 -27 47 00.1 q 619
2017-10-22 20:12:23 n 20 05 07.99 -27 52 35.3 q 619
2017-10-24 03:53:26 C 22 52 23.58 -26 20 48.4 P V78
2017-10-24 03:53:40 C 22 52 24.26 -26 20 46.6 P V78
2017-10-24 03:53:54 C 22 52 24.98 -26 20 44.1 P V78
2017-10-25 01:42:29 C 23 37 44.57 -23 40 22.7 q V83
Radar Observations (6)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2017-10-24 05:20:00 -1000713.203 3 Hz 8560 -14 -14
2017-10-24 05:30:00 -1002732.54 3 Hz 8560 -14 -14
2017-10-24 05:40:00 26252169.71 2 us 8560 -14 -14
2017-10-24 06:00:00 26393298.09 0.5 us 8560 -14 -14
2017-10-25 05:20:00 36832306.817 1 us 8560 -14 -14
2017-10-26 04:00:00 47633179 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)