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 21:44:15 C 20 40 14.31 +25 48 47.8 – V L18
2021-08-02 21:44:17 V 20 40 15.14 +25 48 47.7 14.7 V 247
2021-08-02 21:44:17 v 1 016.33576 +48.20435 – – 247
2021-08-02 21:44:34 C 20 40 14.31 +25 48 49.5 – V L18
2021-08-02 21:45:16 V 20 40 15.25 +25 48 52.4 14.6 V 247
2021-08-02 21:45:16 v 1 016.33576 +48.20435 – – 247
2021-08-02 21:47:15 V 20 40 15.53 +25 49 02.7 14.8 V 247
2021-08-02 21:47:15 v 1 016.33576 +48.20435 – – 247
2021-08-02 21:48:15 V 20 40 15.60 +25 49 08.3 15.2 V 247
2021-08-02 21:48:15 v 1 016.33576 +48.20435 – – 247
2021-08-02 21:53:59 S 20 39 44.422 +25 02 58.45 – V C57
2021-08-02 21:53:59 s 1 -185152.68 2 +264566.12 7840.0 – C57
2021-08-02 22:03:59 S 20 39 46.159 +25 03 50.26 – V C57
2021-08-02 22:03:59 s 1 -185350.01 4 +264064.93 3690.0 – C57
2021-08-02 22:13:56 n 20 40 19.31 +25 51 10.8 – q Z92
2021-08-02 22:13:59 S 20 39 47.818 +25 04 41.23 – V C57
2021-08-02 22:13:59 s 1 -185546.59 3 +263562.68 7080.0 – C57
2021-08-02 22:18:00 V 20 40 18.60 +25 51 42.3 15.4 V 247
2021-08-02 22:18:00 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:19:59 V 20 40 18.81 +25 51 52.4 14.7 V 247
2021-08-02 22:19:59 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:20:59 V 20 40 18.86 +25 51 57.1 15.2 V 247
2021-08-02 22:20:59 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:23:59 S 20 39 49.498 +25 05 33.68 – V C57
2021-08-02 22:23:59 s 1 -185742.41 7 +263059.36 8010.0 – C57
2021-08-02 22:24:57 V 20 40 19.27 +25 52 17.7 14.6 V 247
2021-08-02 22:24:57 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:25:57 V 20 40 19.35 +25 52 22.3 14.8 V 247
2021-08-02 22:25:57 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:26:56 V 20 40 19.46 +25 52 28.0 15.0 V 247
2021-08-02 22:26:56 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:27:56 V 20 40 19.56 +25 52 33.1 14.9 V 247
2021-08-02 22:27:56 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:28:56 V 20 40 19.70 +25 52 38.1 14.8 V 247
2021-08-02 22:28:56 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:29:32 n 20 40 20.96 +25 52 31.6 – q Z92
2021-08-02 22:29:55 V 20 40 19.82 +25 52 43.6 14.9 V 247
2021-08-02 22:29:55 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:30:55 V 20 40 19.90 +25 52 48.3 15.2 V 247
2021-08-02 22:30:55 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:31:54 V 20 40 19.98 +25 52 53.9 15.2 V 247
2021-08-02 22:31:54 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:32:54 V 20 40 20.09 +25 52 58.4 15.3 V 247
2021-08-02 22:32:54 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:33:53 V 20 40 20.22 +25 53 03.8 14.9 V 247
2021-08-02 22:33:53 v 1 016.33576 +48.20435 – – 247
2021-08-02 22:33:59 S 20 39 51.233 +25 06 25.09 – V C57
2021-08-02 22:33:59 s 1 -185937.48 1 +262554.96 6450.0 – C57
2021-08-02 22:34:53 V 20 40 20.32 +25 53 09.2 15.0 V 247
2021-08-02 22:34:53 v 1 016.33576 +48.20435 – – 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)