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
2021-08-02 17:24:37 V 20 39 38.50 +25 26 37.4 15.4 V 247
2021-08-02 17:24:37 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:25:37 V 20 39 38.58 +25 26 42.2 15.1 V 247
2021-08-02 17:25:37 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:26:36 V 20 39 38.69 +25 26 47.6 15.0 V 247
2021-08-02 17:26:36 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:27:36 V 20 39 38.81 +25 26 52.5 15.3 V 247
2021-08-02 17:27:36 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:28:35 V 20 39 38.90 +25 26 57.7 15.5 V 247
2021-08-02 17:28:35 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:29:35 V 20 39 39.01 +25 27 02.8 15.1 V 247
2021-08-02 17:29:35 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:30:35 V 20 39 39.13 +25 27 07.6 14.8 V 247
2021-08-02 17:30:35 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:31:34 V 20 39 39.23 +25 27 12.5 14.6 V 247
2021-08-02 17:31:34 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:32:34 V 20 39 39.30 +25 27 17.6 14.5 V 247
2021-08-02 17:32:34 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:33:33 V 20 39 39.43 +25 27 22.6 14.5 V 247
2021-08-02 17:33:33 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:34:33 V 20 39 39.55 +25 27 28.0 14.7 V 247
2021-08-02 17:34:33 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:35:32 V 20 39 39.64 +25 27 32.9 14.8 V 247
2021-08-02 17:35:32 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:36:32 V 20 39 39.75 +25 27 37.8 15.1 V 247
2021-08-02 17:36:32 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:37:32 V 20 39 39.85 +25 27 42.9 14.9 V 247
2021-08-02 17:37:32 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:38:31 V 20 39 39.96 +25 27 48.3 15.0 V 247
2021-08-02 17:38:31 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:39:31 V 20 39 40.06 +25 27 53.1 14.8 V 247
2021-08-02 17:39:31 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:40:30 V 20 39 40.16 +25 27 58.4 15.0 V 247
2021-08-02 17:40:30 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:41:30 V 20 39 40.26 +25 28 03.3 14.7 V 247
2021-08-02 17:41:30 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:42:29 V 20 39 40.35 +25 28 08.7 14.7 V 247
2021-08-02 17:42:29 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:43:29 V 20 39 40.47 +25 28 13.6 15.0 V 247
2021-08-02 17:43:29 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:43:59 S 20 39 01.766 +24 41 09.74 – V C57
2021-08-02 17:43:59 s 1 -179982.44 1 +276749.70 6870.0 – C57
2021-08-02 17:44:29 V 20 39 40.56 +25 28 18.9 14.9 V 247
2021-08-02 17:44:29 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:45:28 V 20 39 40.67 +25 28 23.7 14.7 V 247
2021-08-02 17:45:28 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:46:28 V 20 39 40.76 +25 28 28.7 14.7 V 247
2021-08-02 17:46:28 v 1 134.17916 +34.51205 – – 247
2021-08-02 17:47:27 V 20 39 40.87 +25 28 34.0 15.0 V 247
2021-08-02 17:47:27 v 1 134.17916 +34.51205 – – 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)