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 23:45:49 C 20 12 33.59 +02 45 10.1 – V 089
2021-07-25 23:49:08 C 20 12 34.11 +02 45 41.7 – V 089
2021-07-25 23:52:26 C 20 12 34.60 +02 46 12.8 – V 089
2021-07-25 23:55:44 C 20 12 35.07 +02 46 43.9 – V 089
2021-07-25 23:59:02 C 20 12 35.57 +02 47 15.5 – V 089
2021-07-26 00:02:20 C 20 12 36.07 +02 47 46.8 – V 089
2021-07-26 01:43:46 V 20 13 02.61 +03 04 14.2 13.7 V 247
2021-07-26 01:43:46 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:44:45 V 20 13 02.77 +03 04 21.4 13.4 V 247
2021-07-26 01:44:45 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:46:48 V 20 13 03.11 +03 04 40.9 13.6 V 247
2021-07-26 01:46:48 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:47:48 V 20 13 03.27 +03 04 50.8 13.5 V 247
2021-07-26 01:47:48 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:48:48 V 20 13 03.40 +03 05 00.1 13.7 V 247
2021-07-26 01:48:48 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:49:47 V 20 13 03.52 +03 05 11.1 13.6 V 247
2021-07-26 01:49:47 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:50:47 V 20 13 03.69 +03 05 19.8 13.6 V 247
2021-07-26 01:50:47 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:51:46 V 20 13 03.88 +03 05 29.0 13.7 V 247
2021-07-26 01:51:46 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:52:46 V 20 13 03.98 +03 05 37.6 13.7 V 247
2021-07-26 01:52:46 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:53:45 V 20 13 04.20 +03 05 47.9 13.7 V 247
2021-07-26 01:53:45 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:54:45 V 20 13 04.34 +03 05 57.2 13.6 V 247
2021-07-26 01:54:45 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:55:45 V 20 13 04.48 +03 06 06.3 13.7 V 247
2021-07-26 01:55:45 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:56:44 V 20 13 04.65 +03 06 17.1 13.6 V 247
2021-07-26 01:56:44 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:57:44 V 20 13 04.80 +03 06 26.6 14.1 V 247
2021-07-26 01:57:44 v 1 273.41725 +30.43496 – – 247
2021-07-26 01:58:43 V 20 13 04.92 +03 06 33.7 13.6 V 247
2021-07-26 01:58:43 v 1 273.41725 +30.43496 – – 247
2021-07-26 02:01:42 V 20 13 05.42 +03 07 03.5 13.6 V 247
2021-07-26 02:01:42 v 1 273.41725 +30.43496 – – 247
2021-07-26 02:02:41 V 20 13 05.56 +03 07 12.1 13.9 V 247
2021-07-26 02:02:41 v 1 273.41725 +30.43496 – – 247
2021-07-26 02:09:42 V 20 13 06.59 +03 08 19.4 13.9 V 247
2021-07-26 02:09:42 v 1 273.41725 +30.43496 – – 247
2021-07-26 02:10:42 V 20 13 06.71 +03 08 27.5 13.8 V 247
2021-07-26 02:10:42 v 1 273.41725 +30.43496 – – 247
2021-07-26 02:12:41 V 20 13 07.05 +03 08 46.9 13.5 V 247
2021-07-26 02:12:41 v 1 273.41725 +30.43496 – – 247
2021-07-26 02:13:41 V 20 13 07.19 +03 08 55.6 13.6 V 247
2021-07-26 02:13:41 v 1 273.41725 +30.43496 – – 247
2021-07-26 02:19:46 V 20 13 08.16 +03 09 54.1 13.7 V 247
2021-07-26 02:19:46 v 1 273.41725 +30.43496 – – 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)