IAA RAS IAA Minor Planet Database

285571 (2000 PQ9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4324411214 ± 8.16e-10
Semi-major axis (a)1.9035657241 AU ± 5.85e-10
Inclination (i)13.48266244° ± 1.16e-06
Long. of Asc. Node (Ω)297.16245353° ± 7.40e-07
Arg. of Perihelion (ω)7.05697041° ± 3.81e-06
Mean Anomaly (M)231.96152491° ± 1.27e-06
Mean Motion (n)0.3752843568°/day ± 1.73e-10
Perihelion dist (q)1.08038563 AU ± 1.59e-09
Aphelion dist (Q)2.72674582 AU ± 1.76e-09
Orbital Period2.62634524 yr ± 1.21e-09
Physical Parameters
H (abs. magnitude)18.65
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.478″
Uncertainty0
Orbit TypeAmor
MOID0.064547 AU
Observations Used7147
Radar Obs Used1
Oppositions13
Arc Total2000-2021
First Observation Used2000-08-09
Last Observation Used2024-12-06
Observations (13272)
Date Type RA Dec Mag Band Observatory
2021-08-04 16:03:59 S 20 46 39.722 +28 34 23.74 – V C57
2021-08-04 16:03:59 s 1 -200623.01 9 +101847.53 5410.0 – C57
2021-08-04 16:13:59 S 20 46 41.256 +28 35 11.80 – V C57
2021-08-04 16:13:59 s 1 -200486.29 0 +101056.89 5040.0 – C57
2021-08-04 16:17:02 V 20 45 12.60 +29 11 15.9 14.7 V 247
2021-08-04 16:17:02 v 1 134.17920 +34.51211 – – 247
2021-08-04 16:18:02 V 20 45 12.69 +29 11 19.9 14.6 V 247
2021-08-04 16:18:02 v 1 134.17920 +34.51211 – – 247
2021-08-04 16:19:02 V 20 45 12.79 +29 11 24.6 14.8 V 247
2021-08-04 16:19:02 v 1 134.17920 +34.51211 – – 247
2021-08-04 16:20:01 V 20 45 12.86 +29 11 28.7 14.9 V 247
2021-08-04 16:20:01 v 1 134.17920 +34.51211 – – 247
2021-08-04 16:21:01 V 20 45 12.95 +29 11 32.4 14.9 V 247
2021-08-04 16:21:01 v 1 134.17920 +34.51211 – – 247
2021-08-04 16:22:00 V 20 45 13.07 +29 11 37.2 14.8 V 247
2021-08-04 16:22:00 v 1 134.17920 +34.51211 – – 247
2021-08-04 16:23:00 V 20 45 13.17 +29 11 41.2 14.8 V 247
2021-08-04 16:23:00 v 1 134.17920 +34.51211 – – 247
2021-08-04 16:23:59 S 20 46 42.833 +28 36 01.66 – V C57
2021-08-04 16:23:59 s 1 -200347.29 8 +100265.12 7440.0 – C57
2021-08-04 16:33:59 S 20 46 44.338 +28 36 50.65 – V C57
2021-08-04 16:33:59 s 1 -200206.03 2 +99472.220 2560.0 – C57
2021-08-04 16:43:59 S 20 46 45.917 +28 37 40.30 – V C57
2021-08-04 16:43:59 s 1 -200062.47 7 +98678.187 380.0 – C57
2021-08-04 16:53:59 S 20 46 47.422 +28 38 28.64 – V C57
2021-08-04 16:53:59 s 1 -199916.62 3 +97883.027 840.0 – C57
2021-08-04 16:59:03 V 20 45 16.46 +29 14 16.5 15.0 V 247
2021-08-04 16:59:03 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:00:03 V 20 45 16.53 +29 14 20.8 15.2 V 247
2021-08-04 17:00:03 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:01:03 V 20 45 16.62 +29 14 25.2 15.5 V 247
2021-08-04 17:01:03 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:02:02 V 20 45 16.73 +29 14 29.3 15.3 V 247
2021-08-04 17:02:02 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:03:02 V 20 45 16.83 +29 14 33.5 15.6 V 247
2021-08-04 17:03:02 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:03:59 S 20 46 48.950 +28 39 17.21 – V C57
2021-08-04 17:03:59 s 1 -199768.45 7 +97086.743 3910.0 – C57
2021-08-04 17:04:01 V 20 45 16.93 +29 14 37.6 16.1 V 247
2021-08-04 17:04:01 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:05:01 V 20 45 17.03 +29 14 41.9 15.7 V 247
2021-08-04 17:05:01 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:06:00 V 20 45 17.12 +29 14 46.1 15.6 V 247
2021-08-04 17:06:00 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:07:00 V 20 45 17.21 +29 14 50.2 15.5 V 247
2021-08-04 17:07:00 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:12:57 V 20 45 17.77 +29 15 15.7 16.1 V 247
2021-08-04 17:12:57 v 1 134.17920 +34.51211 – – 247
2021-08-04 17:13:57 V 20 45 17.85 +29 15 20.0 14.7 V 247
2021-08-04 17:13:57 v 1 134.17920 +34.51211 – – 247
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2021-07-23 05:30:00 67479907 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)