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 13:40:39 V 20 44 51.98 +28 59 56.8 15.3 V 247
2021-08-04 13:40:39 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:40:53 V 20 44 58.58 +28 59 49.0 15.8 V 247
2021-08-04 13:40:53 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:41:39 V 20 44 52.10 +29 00 00.9 15.0 V 247
2021-08-04 13:41:39 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:41:52 V 20 44 58.67 +28 59 53.5 14.9 V 247
2021-08-04 13:41:52 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:42:38 V 20 44 52.21 +29 00 05.6 14.9 V 247
2021-08-04 13:42:38 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:42:52 V 20 44 58.74 +28 59 57.9 14.2 V 247
2021-08-04 13:42:52 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:43:38 V 20 44 52.32 +29 00 09.9 15.4 V 247
2021-08-04 13:43:38 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:43:59 S 20 46 18.005 +28 22 59.20 – V C57
2021-08-04 13:43:59 s 1 -202306.27 7 +112796.47 1920.0 – C57
2021-08-04 13:44:37 V 20 44 52.41 +29 00 14.0 15.4 V 247
2021-08-04 13:44:37 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:45:37 V 20 44 52.50 +29 00 18.8 15.3 V 247
2021-08-04 13:45:37 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:46:37 V 20 44 52.62 +29 00 22.3 15.3 V 247
2021-08-04 13:46:37 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:47:36 V 20 44 52.70 +29 00 26.4 15.4 V 247
2021-08-04 13:47:36 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:47:50 V 20 44 59.19 +29 00 19.8 14.1 V 247
2021-08-04 13:47:50 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:48:36 V 20 44 52.78 +29 00 31.2 15.3 V 247
2021-08-04 13:48:36 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:48:49 V 20 44 59.30 +29 00 24.4 14.9 V 247
2021-08-04 13:48:49 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:49:35 V 20 44 52.87 +29 00 36.2 15.6 V 247
2021-08-04 13:49:35 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:49:49 V 20 44 59.40 +29 00 28.6 15.4 V 247
2021-08-04 13:49:49 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:50:35 V 20 44 53.00 +29 00 39.6 15.6 V 247
2021-08-04 13:50:35 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:50:48 V 20 44 59.48 +29 00 33.2 15.8 V 247
2021-08-04 13:50:48 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:51:34 V 20 44 53.06 +29 00 44.3 15.3 V 247
2021-08-04 13:51:34 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:51:48 V 20 44 59.56 +29 00 37.8 15.3 V 247
2021-08-04 13:51:48 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:52:34 V 20 44 53.19 +29 00 47.9 15.4 V 247
2021-08-04 13:52:34 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:52:47 V 20 44 59.66 +29 00 42.1 15.3 V 247
2021-08-04 13:52:47 v 1 134.17920 +34.51211 – – 247
2021-08-04 13:53:34 V 20 44 53.28 +29 00 52.1 15.5 V 247
2021-08-04 13:53:34 v 1 201.91294 +21.37124 – – 247
2021-08-04 13:53:47 V 20 44 59.74 +29 00 46.5 15.1 V 247
2021-08-04 13:53:47 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)