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
2021-08-05 04:43:59 S 20 48 32.626 +29 36 17.32 – V C57
2021-08-05 04:43:59 s 1 -182785.11 2 +38761.792 350.0 – C57
2021-08-05 04:44:02 V 20 46 41.75 +30 03 56.4 14.2 V 247
2021-08-05 04:44:02 v 1 237.89526 +47.56314 – – 247
2021-08-05 04:44:10 V 20 46 39.39 +30 04 26.7 14.9 V 247
2021-08-05 04:44:10 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:45:01 V 20 46 41.80 +30 04 02.2 14.1 V 247
2021-08-05 04:45:01 v 1 237.89526 +47.56314 – – 247
2021-08-05 04:45:09 V 20 46 39.47 +30 04 30.8 14.9 V 247
2021-08-05 04:45:09 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:46:01 V 20 46 42.09 +30 04 04.6 13.9 V 247
2021-08-05 04:46:01 v 1 237.89526 +47.56314 – – 247
2021-08-05 04:46:09 V 20 46 39.58 +30 04 35.1 14.8 V 247
2021-08-05 04:46:09 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:47:08 V 20 46 39.65 +30 04 39.3 14.8 V 247
2021-08-05 04:47:08 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:48:08 V 20 46 39.76 +30 04 43.7 14.9 V 247
2021-08-05 04:48:08 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:49:08 V 20 46 39.83 +30 04 47.9 14.8 V 247
2021-08-05 04:49:08 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:49:59 V 20 46 42.38 +30 04 21.3 14.6 V 247
2021-08-05 04:49:59 v 1 237.89526 +47.56314 – – 247
2021-08-05 04:50:07 V 20 46 39.93 +30 04 52.0 14.8 V 247
2021-08-05 04:50:07 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:50:59 V 20 46 42.43 +30 04 26.8 14.7 V 247
2021-08-05 04:50:59 v 1 237.89526 +47.56314 – – 247
2021-08-05 04:51:07 V 20 46 39.99 +30 04 56.1 14.7 V 247
2021-08-05 04:51:07 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:51:58 V 20 46 42.52 +30 04 28.7 15.3 V 247
2021-08-05 04:51:58 v 1 237.89526 +47.56314 – – 247
2021-08-05 04:52:06 V 20 46 40.08 +30 05 00.5 14.7 V 247
2021-08-05 04:52:06 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:52:58 V 20 46 42.62 +30 04 34.6 15.5 V 247
2021-08-05 04:52:58 v 1 237.89526 +47.56314 – – 247
2021-08-05 04:53:06 V 20 46 40.16 +30 05 04.3 14.7 V 247
2021-08-05 04:53:06 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:53:59 S 20 48 34.034 +29 37 07.25 – V C57
2021-08-05 04:53:59 s 1 -182433.76 2 +37896.200 6080.0 – C57
2021-08-05 04:54:05 V 20 46 40.27 +30 05 07.7 14.8 V 247
2021-08-05 04:54:05 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:55:05 V 20 46 40.33 +30 05 11.8 14.8 V 247
2021-08-05 04:55:05 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:55:56 V 20 46 42.86 +30 04 47.1 14.9 V 247
2021-08-05 04:55:56 v 1 237.89526 +47.56314 – – 247
2021-08-05 04:56:05 V 20 46 40.40 +30 05 16.3 14.9 V 247
2021-08-05 04:56:05 v 1 276.64224 +33.90559 – – 247
2021-08-05 04:56:56 V 20 46 43.00 +30 04 50.0 15.2 V 247
2021-08-05 04:56:56 v 1 237.89526 +47.56314 – – 247
2021-08-05 05:00:54 V 20 46 43.50 +30 05 07.5 15.3 V 247
2021-08-05 05:00:54 v 1 237.89526 +47.56314 – – 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)