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
2021-07-25 02:05:30 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:06:10 V 20 08 56.09 -00 44 33.5 13.8 V 247
2021-07-25 02:06:10 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:06:50 V 20 08 56.19 -00 44 25.6 13.9 V 247
2021-07-25 02:06:50 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:07:30 V 20 08 56.30 -00 44 20.0 14.0 V 247
2021-07-25 02:07:30 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:08:09 V 20 08 56.39 -00 44 13.8 13.5 V 247
2021-07-25 02:08:09 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:08:51 V 20 08 56.61 -00 44 05.2 13.6 V 247
2021-07-25 02:08:51 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:09:33 V 20 08 56.61 -00 43 59.8 13.5 V 247
2021-07-25 02:09:33 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:10:12 V 20 08 56.71 -00 43 53.1 13.6 V 247
2021-07-25 02:10:12 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:10:52 V 20 08 56.81 -00 43 46.1 13.5 V 247
2021-07-25 02:10:52 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:11:32 V 20 08 56.91 -00 43 39.6 13.5 V 247
2021-07-25 02:11:32 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:12:11 V 20 08 57.00 -00 43 33.0 13.8 V 247
2021-07-25 02:12:11 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:12:51 V 20 08 57.09 -00 43 27.9 13.5 V 247
2021-07-25 02:12:51 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:13:31 V 20 08 57.23 -00 43 20.2 13.6 V 247
2021-07-25 02:13:31 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:14:11 V 20 08 57.36 -00 43 14.6 13.5 V 247
2021-07-25 02:14:11 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:14:50 V 20 08 57.42 -00 43 07.8 13.5 V 247
2021-07-25 02:14:50 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:15:30 V 20 08 57.54 -00 43 00.6 13.7 V 247
2021-07-25 02:15:30 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:16:10 V 20 08 57.67 -00 42 54.0 13.8 V 247
2021-07-25 02:16:10 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:16:49 V 20 08 57.72 -00 42 47.9 13.8 V 247
2021-07-25 02:16:49 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:17:29 V 20 08 57.83 -00 42 41.0 13.6 V 247
2021-07-25 02:17:29 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:18:09 V 20 08 57.99 -00 42 34.6 13.8 V 247
2021-07-25 02:18:09 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:18:53 V 20 08 58.09 -00 42 26.7 13.7 V 247
2021-07-25 02:18:53 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:19:36 V 20 08 58.21 -00 42 20.8 13.6 V 247
2021-07-25 02:19:36 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:20:16 V 20 08 58.28 -00 42 13.7 13.6 V 247
2021-07-25 02:20:16 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:20:56 V 20 08 58.43 -00 42 07.3 13.5 V 247
2021-07-25 02:20:56 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:21:35 V 20 08 58.49 -00 41 59.6 13.6 V 247
2021-07-25 02:21:35 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:22:15 V 20 08 58.62 -00 41 54.2 13.8 V 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)