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 02:22:15 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:22:55 V 20 08 58.72 -00 41 48.0 13.7 V 247
2021-07-25 02:22:55 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:23:34 V 20 08 58.82 -00 41 40.7 13.8 V 247
2021-07-25 02:23:34 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:31:14 V 20 08 59.97 -00 40 24.8 13.6 V 247
2021-07-25 02:31:14 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:31:54 V 20 09 00.14 -00 40 18.6 13.4 V 247
2021-07-25 02:31:54 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:32:33 V 20 09 00.19 -00 40 12.3 13.4 V 247
2021-07-25 02:32:33 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:33:13 V 20 09 00.31 -00 40 05.5 13.7 V 247
2021-07-25 02:33:13 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:33:53 V 20 09 00.44 -00 39 59.4 13.9 V 247
2021-07-25 02:33:53 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:34:32 V 20 09 00.48 -00 39 51.4 13.8 V 247
2021-07-25 02:34:32 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:36:32 V 20 09 00.83 -00 39 32.9 14.0 V 247
2021-07-25 02:36:32 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:37:11 V 20 09 00.95 -00 39 26.6 13.5 V 247
2021-07-25 02:37:11 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:37:51 V 20 09 01.03 -00 39 19.2 13.4 V 247
2021-07-25 02:37:51 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:38:31 V 20 09 01.09 -00 39 12.7 13.4 V 247
2021-07-25 02:38:31 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:39:10 V 20 09 01.24 -00 39 06.8 13.5 V 247
2021-07-25 02:39:10 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:39:50 V 20 09 01.33 -00 38 59.8 13.6 V 247
2021-07-25 02:39:50 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:40:30 V 20 09 01.41 -00 38 53.4 14.1 V 247
2021-07-25 02:40:30 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:41:09 V 20 09 01.59 -00 38 46.7 13.6 V 247
2021-07-25 02:41:09 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:41:49 V 20 09 01.67 -00 38 40.5 13.4 V 247
2021-07-25 02:41:49 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:42:29 V 20 09 01.74 -00 38 33.8 13.6 V 247
2021-07-25 02:42:29 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:43:09 V 20 09 01.91 -00 38 27.3 13.4 V 247
2021-07-25 02:43:09 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:43:48 V 20 09 01.98 -00 38 20.9 13.4 V 247
2021-07-25 02:43:48 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:44:28 V 20 09 02.08 -00 38 13.6 13.7 V 247
2021-07-25 02:44:28 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:45:08 V 20 09 02.15 -00 38 07.9 13.6 V 247
2021-07-25 02:45:08 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:45:47 V 20 09 02.27 -00 38 01.4 13.7 V 247
2021-07-25 02:45:47 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:46:27 V 20 09 02.38 -00 37 54.7 13.9 V 247
2021-07-25 02:46:27 v 1 273.41716 +30.43474 – – 247
2021-07-25 02:47:07 V 20 09 02.48 -00 37 47.6 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)