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 13:25:59 V 20 44 57.21 +28 58 42.7 15.3 V 247
2021-08-04 13:25:59 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:26:59 V 20 44 57.31 +28 58 47.2 15.5 V 247
2021-08-04 13:26:59 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:27:58 V 20 44 57.41 +28 58 51.7 15.3 V 247
2021-08-04 13:27:58 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:28:58 V 20 44 57.49 +28 58 56.3 15.1 V 247
2021-08-04 13:28:58 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:29:44 V 20 44 50.98 +28 59 09.4 13.9 V 247
2021-08-04 13:29:44 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:29:57 V 20 44 57.58 +28 59 00.5 15.3 V 247
2021-08-04 13:29:57 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:30:43 V 20 44 51.08 +28 59 14.4 14.1 V 247
2021-08-04 13:30:43 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:30:57 V 20 44 57.68 +28 59 04.8 15.5 V 247
2021-08-04 13:30:57 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:31:43 V 20 44 51.20 +28 59 18.5 14.6 V 247
2021-08-04 13:31:43 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:31:56 V 20 44 57.76 +28 59 09.2 15.5 V 247
2021-08-04 13:31:56 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:32:43 V 20 44 51.29 +28 59 22.9 15.4 V 247
2021-08-04 13:32:43 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:32:56 V 20 44 57.86 +28 59 13.8 15.2 V 247
2021-08-04 13:32:56 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:33:42 V 20 44 51.35 +28 59 27.1 15.2 V 247
2021-08-04 13:33:42 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:33:56 V 20 44 57.95 +28 59 18.3 15.1 V 247
2021-08-04 13:33:56 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:33:59 S 20 46 16.440 +28 22 10.74 – V C57
2021-08-04 13:33:59 s 1 -202410.47 4 +113569.90 8220.0 – C57
2021-08-04 13:34:42 V 20 44 51.47 +28 59 31.8 14.7 V 247
2021-08-04 13:34:42 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:34:55 V 20 44 58.03 +28 59 22.4 15.0 V 247
2021-08-04 13:34:55 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:35:41 V 20 44 51.54 +28 59 35.9 14.3 V 247
2021-08-04 13:35:41 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:35:55 V 20 44 58.12 +28 59 27.1 15.1 V 247
2021-08-04 13:35:55 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:36:41 V 20 44 51.63 +28 59 39.8 14.3 V 247
2021-08-04 13:36:41 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:36:54 V 20 44 58.22 +28 59 31.4 15.0 V 247
2021-08-04 13:36:54 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:37:40 V 20 44 51.72 +28 59 44.5 14.3 V 247
2021-08-04 13:37:40 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:37:54 V 20 44 58.31 +28 59 35.8 15.3 V 247
2021-08-04 13:37:54 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:38:40 V 20 44 51.84 +28 59 48.8 14.7 V 247
2021-08-04 13:38:40 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:39:40 V 20 44 51.89 +28 59 53.7 14.9 V 247
2021-08-04 13:39:40 v 1 201.91294 +21.37124 – – 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)