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 06:19:54 C 20 09 31.84 -00 03 14.0 – V I22
2021-07-25 06:20:13 C 20 09 31.86 -00 03 11.1 – V I22
2021-07-25 06:20:31 V 20 09 37.64 -00 03 13.7 13.8 V 247
2021-07-25 06:20:31 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:20:55 V 20 09 38.10 -00 02 53.0 13.6 V 247
2021-07-25 06:20:55 v 1 238.27262 +37.68709 – – 247
2021-07-25 06:21:18 V 20 09 37.74 -00 03 06.6 13.5 V 247
2021-07-25 06:21:18 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:22:06 V 20 09 37.88 -00 02 59.2 13.3 V 247
2021-07-25 06:22:06 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:22:38 V 20 09 38.33 -00 02 35.7 13.6 V 247
2021-07-25 06:22:38 v 1 238.27262 +37.68709 – – 247
2021-07-25 06:22:54 V 20 09 38.00 -00 02 50.8 13.4 V 247
2021-07-25 06:22:54 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:23:30 V 20 09 38.47 -00 02 27.0 13.4 V 247
2021-07-25 06:23:30 v 1 238.27262 +37.68709 – – 247
2021-07-25 06:23:41 V 20 09 38.11 -00 02 42.7 13.7 V 247
2021-07-25 06:23:41 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:24:22 V 20 09 38.59 -00 02 18.8 13.5 V 247
2021-07-25 06:24:22 v 1 238.27262 +37.68709 – – 247
2021-07-25 06:24:29 V 20 09 38.20 -00 02 35.3 13.7 V 247
2021-07-25 06:24:29 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:25:13 V 20 09 38.72 -00 02 10.2 13.6 V 247
2021-07-25 06:25:13 v 1 238.27262 +37.68709 – – 247
2021-07-25 06:25:17 V 20 09 38.36 -00 02 28.3 13.4 V 247
2021-07-25 06:25:17 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:26:04 V 20 09 38.49 -00 02 20.0 13.6 V 247
2021-07-25 06:26:04 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:26:05 V 20 09 38.87 -00 02 01.6 13.3 V 247
2021-07-25 06:26:05 v 1 238.27262 +37.68709 – – 247
2021-07-25 06:26:52 V 20 09 38.60 -00 02 12.8 13.7 V 247
2021-07-25 06:26:52 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:27:40 V 20 09 38.73 -00 02 04.9 13.5 V 247
2021-07-25 06:27:40 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:28:27 V 20 09 38.86 -00 01 57.0 13.4 V 247
2021-07-25 06:28:27 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:29:15 V 20 09 38.95 -00 01 49.3 13.3 V 247
2021-07-25 06:29:15 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:30:03 V 20 09 39.10 -00 01 41.0 13.3 V 247
2021-07-25 06:30:03 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:30:50 V 20 09 39.21 -00 01 33.7 13.5 V 247
2021-07-25 06:30:50 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:31:38 V 20 09 39.33 -00 01 25.8 13.5 V 247
2021-07-25 06:31:38 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:32:26 V 20 09 39.45 -00 01 17.1 13.5 V 247
2021-07-25 06:32:26 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:33:13 V 20 09 39.58 -00 01 10.5 13.6 V 247
2021-07-25 06:33:13 v 1 236.86643 +49.13905 – – 247
2021-07-25 06:34:01 V 20 09 39.72 -00 01 02.2 13.6 V 247
2021-07-25 06:34:01 v 1 236.86643 +49.13905 – – 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)