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
2002-02-06 10:17:43 C 09 12 48.68 +08 07 46.4 d 291
2002-02-06 10:27:09 C 09 12 48.14 +08 07 46.8 d 291
2002-02-09 05:56:04 C 09 09 02.81 +08 14 15.2 d 691
2002-02-09 06:01:47 C 09 09 02.50 +08 14 14.8 d 691
2002-02-09 06:07:16 C 09 09 02.16 +08 14 16.2 d 691
2005-03-03 12:22:54 C 11 17 48.71 -16 36 37.3 F65
2005-03-03 12:24:55 C 11 17 48.56 -16 36 37.5 F65
2005-03-03 12:27:00 C 11 17 48.46 -16 36 36.9 F65
2006-11-23 11:48:59 C 08 55 36.22 +19 25 45.3 c 568
2006-11-24 11:35:47 C 08 55 36.92 +19 23 25.9 c 568
2006-11-24 12:50:01 C 08 55 36.85 +19 23 19.0 c 568
2006-11-24 14:04:51 C 08 55 36.75 +19 23 11.9 c 568
2007-01-27 04:47:15 C 07 58 46.36 +19 11 28.3 o 691
2007-01-27 05:12:59 C 07 58 44.85 +19 11 29.1 o 691
2007-01-27 05:38:44 C 07 58 43.57 +19 11 29.3 o 691
2008-08-18 08:22:09 C 03 38 23.20 +38 05 56.5 o H55
2008-08-18 08:33:49 C 03 38 24.23 +38 06 03.2 o H55
2008-08-18 08:44:56 C 03 38 25.07 +38 06 10.5 o H55
2008-08-19 08:14:15 C 03 40 26.12 +38 21 26.2 o H55
2008-08-19 08:25:22 C 03 40 26.95 +38 21 34.4 o H55
2008-08-19 08:35:54 C 03 40 27.88 +38 21 40.9 o H55
2011-12-31 04:42:49 C 06 55 32.35 +29 06 03.6 o 691
2011-12-31 05:04:44 C 06 55 30.83 +29 06 01.1 o 691
2011-12-31 05:26:39 C 06 55 29.42 +29 05 59.3 o 691
2013-03-20 09:59:24 C 12 27 08.309 -31 03 33.91 L F51
2013-03-20 10:32:35 C 12 27 06.189 -31 03 41.67 L F51
2013-03-20 10:49:42 C 12 27 05.112 -31 03 45.52 L F51
2013-05-07 10:07:47 C 11 15 44.37 -26 43 38.2 q E12
2013-05-17 11:43:48 C 11 12 20.26 -24 42 20.1 r E12
2013-05-17 11:58:55 C 11 12 20.16 -24 42 12.4 r E12
2013-05-17 12:14:06 C 11 12 20.19 -24 42 05.2 r E12
2013-05-17 12:29:21 C 11 12 20.16 -24 41 57.3 r E12
2018-03-20 04:52:58 C 09 49 07.52 -03 50 37.9 U G96
2018-03-20 05:00:25 C 09 49 07.21 -03 50 36.3 U G96
2018-03-20 05:15:25 C 09 49 06.47 -03 50 32.3 U G96
2019-12-19 06:31:48 C 08 02 04.92 +24 24 37.8 u H21
2019-12-19 06:43:06 C 08 02 04.40 +24 24 37.0 u H21
2019-12-19 06:50:13 C 08 02 04.07 +24 24 37.2 u H21
2019-12-23 05:40:49 C 07 57 24.32 +24 25 53.0 u H21
2019-12-23 05:46:22 C 07 57 24.03 +24 25 52.8 u H21
2019-12-23 05:51:03 C 07 57 23.74 +24 25 52.7 u H21
2021-04-13 07:20:50 C 15 44 53.17 -52 14 00.2 V W94
2021-04-13 07:28:54 C 15 44 53.49 -52 14 07.9 V W94
2021-04-13 07:36:54 C 15 44 53.80 -52 14 15.5 V W94
2021-05-23 01:21:11 C 16 12 07.36 -66 09 19.5 o K95
2021-05-23 01:36:40 C 16 12 07.50 -66 09 28.1 o K95
2021-05-30 05:34:03 S 16 16 13.037 -67 31 01.45 V C57
2021-05-30 05:34:03 s 1 +152542.78 7 +288036.15 4180.0 C57
2021-05-30 06:54:03 S 16 16 17.506 -67 31 34.82 V C57
2021-05-30 06:54:03 s 1 +150593.07 0 +291901.01 7080.0 C57
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)