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 13:54:33 V 20 44 53.39 +29 00 56.4 15.4 V 247
2021-08-04 13:54:33 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:54:47 V 20 44 59.83 +29 00 50.8 15.1 V 247
2021-08-04 13:54:47 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:55:33 V 20 44 53.45 +29 01 01.0 15.4 V 247
2021-08-04 13:55:33 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:55:46 V 20 44 59.92 +29 00 55.4 15.4 V 247
2021-08-04 13:55:46 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:56:32 V 20 44 53.55 +29 01 04.8 15.1 V 247
2021-08-04 13:56:32 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:57:32 V 20 44 53.67 +29 01 09.2 15.1 V 247
2021-08-04 13:57:32 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:58:31 V 20 44 53.75 +29 01 13.6 14.9 V 247
2021-08-04 13:58:31 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:58:45 V 20 45 00.18 +29 01 08.4 15.2 V 247
2021-08-04 13:58:45 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:59:31 V 20 44 53.83 +29 01 17.8 15.0 V 247
2021-08-04 13:59:31 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:59:44 V 20 45 00.28 +29 01 12.8 14.9 V 247
2021-08-04 13:59:44 v 1 134.17920 +34.51211 – – 247
2021-08-04 14:00:30 V 20 44 53.96 +29 01 21.9 15.0 V 247
2021-08-04 14:00:30 v 1 201.91294 +21.37124 – – 247
2021-08-04 14:00:44 V 20 45 00.36 +29 01 17.5 14.1 V 247
2021-08-04 14:00:44 v 1 134.17920 +34.51211 – – 247
2021-08-04 14:01:30 V 20 44 54.04 +29 01 26.5 15.0 V 247
2021-08-04 14:01:30 v 1 201.91294 +21.37124 – – 247
2021-08-04 14:02:30 V 20 44 54.15 +29 01 30.8 14.9 V 247
2021-08-04 14:02:30 v 1 201.91294 +21.37124 – – 247
2021-08-04 14:03:29 V 20 44 54.22 +29 01 34.8 14.8 V 247
2021-08-04 14:03:29 v 1 201.91294 +21.37124 – – 247
2021-08-04 14:03:59 S 20 46 21.158 +28 24 36.72 – V C57
2021-08-04 14:03:59 s 1 -202091.60 3 +111246.13 9220.0 – C57
2021-08-04 14:04:29 V 20 44 54.32 +29 01 39.1 15.1 V 247
2021-08-04 14:04:29 v 1 201.91294 +21.37124 – – 247
2021-08-04 14:05:28 V 20 44 54.45 +29 01 43.6 14.9 V 247
2021-08-04 14:05:28 v 1 201.91294 +21.37124 – – 247
2021-08-04 14:06:28 V 20 44 54.52 +29 01 47.3 15.1 V 247
2021-08-04 14:06:28 v 1 201.91294 +21.37124 – – 247
2021-08-04 14:07:27 V 20 44 54.64 +29 01 51.9 15.2 V 247
2021-08-04 14:07:27 v 1 201.91294 +21.37124 – – 247
2021-08-04 14:08:27 V 20 44 54.72 +29 01 55.9 15.3 V 247
2021-08-04 14:08:27 v 1 201.91294 +21.37124 – – 247
2021-08-04 14:11:43 V 20 45 01.36 +29 02 06.2 14.9 V 247
2021-08-04 14:11:43 v 1 134.17920 +34.51211 – – 247
2021-08-04 14:12:42 V 20 45 01.42 +29 02 10.3 15.0 V 247
2021-08-04 14:12:42 v 1 134.17920 +34.51211 – – 247
2021-08-04 14:13:42 V 20 45 01.52 +29 02 14.9 15.1 V 247
2021-08-04 14:13:42 v 1 134.17920 +34.51211 – – 247
2021-08-04 14:13:59 S 20 46 22.675 +28 25 25.36 – V C57
2021-08-04 14:13:59 s 1 -201981.10 5 +110469.23 2750.0 – C57
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)