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 05:33:08 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:33:24 V 20 09 30.33 -00 10 56.1 13.3 V 247
2021-07-25 05:33:24 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:34:00 V 20 09 30.99 -00 10 34.6 13.7 V 247
2021-07-25 05:34:00 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:34:16 V 20 09 30.47 -00 10 47.6 13.6 V 247
2021-07-25 05:34:16 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:34:52 V 20 09 31.13 -00 10 26.0 13.5 V 247
2021-07-25 05:34:52 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:35:43 V 20 09 31.26 -00 10 17.9 13.6 V 247
2021-07-25 05:35:43 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:35:59 V 20 09 30.71 -00 10 30.6 13.5 V 247
2021-07-25 05:35:59 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:36:35 V 20 09 31.41 -00 10 09.2 13.5 V 247
2021-07-25 05:36:35 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:37:26 V 20 09 31.57 -00 10 00.4 13.5 V 247
2021-07-25 05:37:26 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:37:42 V 20 09 31.00 -00 10 13.2 13.6 V 247
2021-07-25 05:37:42 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:38:18 V 20 09 31.67 -00 09 52.3 13.5 V 247
2021-07-25 05:38:18 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:38:34 V 20 09 31.15 -00 10 04.6 13.5 V 247
2021-07-25 05:38:34 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:39:10 V 20 09 31.81 -00 09 43.4 13.5 V 247
2021-07-25 05:39:10 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:39:25 V 20 09 31.26 -00 09 56.2 13.6 V 247
2021-07-25 05:39:25 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:40:01 V 20 09 31.94 -00 09 34.9 13.5 V 247
2021-07-25 05:40:01 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:40:17 V 20 09 31.38 -00 09 48.0 13.6 V 247
2021-07-25 05:40:17 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:41:09 V 20 09 31.49 -00 09 40.1 13.6 V 247
2021-07-25 05:41:09 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:41:45 V 20 09 32.21 -00 09 18.0 13.5 V 247
2021-07-25 05:41:45 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:42:00 V 20 09 31.64 -00 09 30.8 13.8 V 247
2021-07-25 05:42:00 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:42:52 V 20 09 31.77 -00 09 22.2 14.0 V 247
2021-07-25 05:42:52 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:43:43 V 20 09 31.87 -00 09 14.7 13.2 V 247
2021-07-25 05:43:43 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:45:11 V 20 09 32.74 -00 08 43.5 13.4 V 247
2021-07-25 05:45:11 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:46:03 V 20 09 32.84 -00 08 34.6 13.8 V 247
2021-07-25 05:46:03 v 1 238.27262 +37.68709 – – 247
2021-07-25 05:47:10 V 20 09 32.38 -00 08 40.8 14.1 V 247
2021-07-25 05:47:10 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:48:02 V 20 09 32.48 -00 08 31.9 13.7 V 247
2021-07-25 05:48:02 v 1 237.89517 +47.56307 – – 247
2021-07-25 05:49:45 V 20 09 32.79 -00 08 14.0 13.5 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)