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
2021-07-23 22:12:38 C 20 03 46.15 -05 27 22.1 – V 089
2021-07-23 22:15:56 C 20 03 46.69 -05 26 48.4 – V 089
2021-07-23 22:19:14 C 20 03 47.21 -05 26 13.7 – V 089
2021-07-23 22:22:32 C 20 03 47.75 -05 25 39.6 – V 089
2021-07-23 22:25:50 C 20 03 48.28 -05 25 05.8 – V 089
2021-07-23 22:36:52 C 20 03 51.44 -05 23 16.2 – X G02
2021-07-23 22:45:26 C 20 03 52.81 -05 21 48.8 – X G02
2021-07-23 22:57:38 C 20 03 54.73 -05 19 42.7 – X G02
2021-07-24 06:45:27 V 20 05 23.51 -03 59 24.8 13.5 V 247
2021-07-24 06:45:27 v 1 237.71937 +37.76917 – – 247
2021-07-24 06:46:53 V 20 05 23.65 -03 59 10.6 13.2 V 247
2021-07-24 06:46:53 v 1 237.71937 +37.76917 – – 247
2021-07-24 19:38:46 C 20 07 45.12 -01 49 16.5 – V L54
2021-07-24 20:18:51 C 20 07 51.48 -01 42 35.6 – V L54
2021-07-24 20:58:57 C 20 07 57.71 -01 35 55.0 – V L54
2021-07-24 21:32:47 C 20 08 04.68 -01 30 25.3 – V Z80
2021-07-24 21:33:16 C 20 08 02.99 -01 30 12.4 – V L54
2021-07-24 21:36:53 C 20 08 02.61 -01 29 38.7 – V 089
2021-07-24 21:36:57 C 20 08 05.36 -01 29 43.8 – V Z80
2021-07-24 21:40:11 C 20 08 03.12 -01 29 05.7 – V 089
2021-07-24 21:41:07 C 20 08 06.03 -01 29 02.3 – V Z80
2021-07-24 21:43:29 C 20 08 03.62 -01 28 32.7 – V 089
2021-07-24 21:45:17 C 20 08 06.68 -01 28 20.7 – V Z80
2021-07-24 21:46:47 C 20 08 04.14 -01 28 00.0 – V 089
2021-07-24 21:49:31 C 20 08 07.36 -01 27 38.4 – V Z80
2021-07-24 21:50:05 C 20 08 04.63 -01 27 26.8 – V 089
2021-07-24 21:53:23 C 20 08 05.13 -01 26 54.3 – V 089
2021-07-24 21:54:00 C 20 08 08.05 -01 26 54.0 – V Z80
2021-07-24 21:56:41 C 20 08 05.66 -01 26 21.4 – V 089
2021-07-24 21:59:59 C 20 08 06.15 -01 25 48.1 – V 089
2021-07-24 22:01:30 C 20 08 07.31 -01 25 30.8 – V L54
2021-07-24 22:03:17 C 20 08 06.66 -01 25 15.4 – V 089
2021-07-24 22:06:35 C 20 08 07.17 -01 24 42.4 – V 089
2021-07-24 22:30:24 C 20 08 11.72 -01 20 42.6 – V L54
2021-07-24 23:01:07 C 20 08 16.40 -01 15 36.6 – V L54
2021-07-24 23:25:54 C 20 08 20.18 -01 11 30.0 – V L54
2021-07-24 23:51:01 C 20 08 24.03 -01 07 20.1 – V L54
2021-07-25 01:44:59 V 20 08 52.63 -00 48 03.1 13.9 V 247
2021-07-25 01:44:59 v 1 273.41716 +30.43474 – – 247
2021-07-25 01:45:39 V 20 08 52.78 -00 47 57.6 13.9 V 247
2021-07-25 01:45:39 v 1 273.41716 +30.43474 – – 247
2021-07-25 01:46:19 V 20 08 52.93 -00 47 49.3 13.9 V 247
2021-07-25 01:46:19 v 1 273.41716 +30.43474 – – 247
2021-07-25 01:46:59 V 20 08 52.98 -00 47 43.6 13.4 V 247
2021-07-25 01:46:59 v 1 273.41716 +30.43474 – – 247
2021-07-25 01:47:38 V 20 08 53.13 -00 47 36.6 13.7 V 247
2021-07-25 01:47:38 v 1 273.41716 +30.43474 – – 247
2021-07-25 01:48:18 V 20 08 53.21 -00 47 29.6 13.7 V 247
2021-07-25 01:48:18 v 1 273.41716 +30.43474 – – 247
2021-07-25 01:48:58 V 20 08 53.30 -00 47 23.3 13.7 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)