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
2021-08-04 10:33:59 S 20 45 48.139 +28 07 28.09 – V C57
2021-08-04 10:33:59 s 1 -203940.77 0 +127292.46 6140.0 – C57
2021-08-04 10:43:59 S 20 45 49.774 +28 08 17.41 – V C57
2021-08-04 10:43:59 s 1 -203872.39 4 +126540.04 4560.0 – C57
2021-08-04 10:53:59 S 20 45 51.305 +28 09 06.77 – V C57
2021-08-04 10:53:59 s 1 -203802.11 4 +125786.46 6880.0 – C57
2021-08-04 11:03:59 S 20 45 52.934 +28 09 55.48 – V C57
2021-08-04 11:03:59 s 1 -203729.91 9 +125031.69 3060.0 – C57
2021-08-04 11:13:59 S 20 45 54.466 +28 10 44.69 – V C57
2021-08-04 11:13:59 s 1 -203655.80 0 +124275.75 3080.0 – C57
2021-08-04 11:23:59 S 20 45 56.006 +28 11 33.32 – V C57
2021-08-04 11:23:59 s 1 -203579.74 6 +123518.64 6900.0 – C57
2021-08-04 11:33:59 S 20 45 57.617 +28 12 22.18 – V C57
2021-08-04 11:33:59 s 1 -203501.74 9 +122760.36 4490.0 – C57
2021-08-04 11:43:39 V 20 44 41.27 +28 51 29.7 14.9 V 247
2021-08-04 11:43:39 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:43:59 S 20 45 59.215 +28 13 12.07 – V C57
2021-08-04 11:43:59 s 1 -203421.79 8 +122000.91 5830.0 – C57
2021-08-04 11:44:39 V 20 44 41.36 +28 51 34.2 14.9 V 247
2021-08-04 11:44:39 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:45:39 V 20 44 41.46 +28 51 38.8 15.1 V 247
2021-08-04 11:45:39 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:46:38 V 20 44 41.56 +28 51 42.9 15.1 V 247
2021-08-04 11:46:38 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:47:38 V 20 44 41.65 +28 51 47.6 14.9 V 247
2021-08-04 11:47:38 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:48:37 V 20 44 41.76 +28 51 52.1 14.9 V 247
2021-08-04 11:48:37 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:49:37 V 20 44 41.84 +28 51 56.3 14.7 V 247
2021-08-04 11:49:37 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:50:36 V 20 44 41.89 +28 52 00.8 14.7 V 247
2021-08-04 11:50:36 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:51:36 V 20 44 41.99 +28 52 05.1 14.7 V 247
2021-08-04 11:51:36 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:52:36 V 20 44 42.10 +28 52 09.1 14.7 V 247
2021-08-04 11:52:36 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:53:35 V 20 44 42.19 +28 52 13.7 14.7 V 247
2021-08-04 11:53:35 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:54:35 V 20 44 42.25 +28 52 18.0 15.0 V 247
2021-08-04 11:54:35 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:55:34 V 20 44 42.33 +28 52 22.2 15.0 V 247
2021-08-04 11:55:34 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:56:34 V 20 44 42.41 +28 52 26.9 15.2 V 247
2021-08-04 11:56:34 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:57:33 V 20 44 42.52 +28 52 31.5 15.0 V 247
2021-08-04 11:57:33 v 1 201.91294 +21.37124 – – 247
2021-08-04 11:58:33 V 20 44 42.61 +28 52 35.7 15.0 V 247
2021-08-04 11:58:33 v 1 201.91294 +21.37124 – – 247
2021-08-04 12:03:01 V 20 44 43.01 +28 52 54.8 14.7 V 247
2021-08-04 12:03:01 v 1 201.91294 +21.37124 – – 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)