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 03:49:49 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:50:29 V 20 09 12.15 -00 27 21.7 13.9 V 247
2021-07-25 03:50:29 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:51:08 V 20 09 12.18 -00 27 15.4 13.4 V 247
2021-07-25 03:51:08 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:51:48 V 20 09 12.29 -00 27 08.8 13.6 V 247
2021-07-25 03:51:48 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:52:28 V 20 09 12.37 -00 27 02.6 13.7 V 247
2021-07-25 03:52:28 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:53:07 V 20 09 12.46 -00 26 55.5 13.6 V 247
2021-07-25 03:53:07 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:53:47 V 20 09 12.58 -00 26 48.6 13.7 V 247
2021-07-25 03:53:47 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:54:27 V 20 09 12.63 -00 26 42.9 13.5 V 247
2021-07-25 03:54:27 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:55:06 V 20 09 12.77 -00 26 36.2 13.5 V 247
2021-07-25 03:55:06 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:55:46 V 20 09 12.87 -00 26 30.1 13.8 V 247
2021-07-25 03:55:46 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:59:17 V 20 09 13.35 -00 25 54.9 13.8 V 247
2021-07-25 03:59:17 v 1 273.41716 +30.43474 – – 247
2021-07-25 03:59:57 V 20 09 13.43 -00 25 48.2 13.6 V 247
2021-07-25 03:59:57 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:00:37 V 20 09 13.54 -00 25 42.0 13.6 V 247
2021-07-25 04:00:37 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:01:16 V 20 09 13.65 -00 25 35.2 13.5 V 247
2021-07-25 04:01:16 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:01:56 V 20 09 13.74 -00 25 28.5 13.6 V 247
2021-07-25 04:01:56 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:02:36 V 20 09 13.87 -00 25 23.3 13.9 V 247
2021-07-25 04:02:36 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:03:15 V 20 09 13.99 -00 25 15.6 13.8 V 247
2021-07-25 04:03:15 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:03:55 V 20 09 14.03 -00 25 09.2 13.8 V 247
2021-07-25 04:03:55 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:04:35 V 20 09 14.15 -00 25 03.2 13.9 V 247
2021-07-25 04:04:35 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:05:15 V 20 09 14.24 -00 24 56.2 13.5 V 247
2021-07-25 04:05:15 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:05:54 V 20 09 14.34 -00 24 50.0 13.8 V 247
2021-07-25 04:05:54 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:06:34 V 20 09 14.46 -00 24 43.5 13.8 V 247
2021-07-25 04:06:34 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:07:14 V 20 09 14.54 -00 24 36.8 13.8 V 247
2021-07-25 04:07:14 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:07:53 V 20 09 14.62 -00 24 30.5 14.2 V 247
2021-07-25 04:07:53 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:08:33 V 20 09 14.75 -00 24 23.2 13.6 V 247
2021-07-25 04:08:33 v 1 273.41716 +30.43474 – – 247
2021-07-25 04:09:13 V 20 09 14.85 -00 24 16.6 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)