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
2021-07-31 21:33:59 S 20 31 21.557 +20 35 23.93 V C57
2021-07-31 21:33:59 s 1 -104819.88 6 +367123.23 4170.0 C57
2021-07-31 21:34:26 C 20 34 05.20 +21 17 07.9 V 089
2021-07-31 21:34:54 C 20 34 01.97 +21 17 18.7 V 186
2021-07-31 21:37:44 C 20 34 05.54 +21 17 28.0 V 089
2021-07-31 21:43:59 S 20 31 23.299 +20 36 22.72 V C57
2021-07-31 21:43:59 s 1 -105153.01 5 +366909.73 4170.0 C57
2021-07-31 21:44:20 C 20 34 06.31 +21 18 07.6 V 089
2021-07-31 22:03:59 S 20 31 26.832 +20 38 20.26 V C57
2021-07-31 22:03:59 s 1 -105818.48 7 +366479.92 1390.0 C57
2021-07-31 22:23:59 S 20 31 30.358 +20 40 18.80 V C57
2021-07-31 22:23:59 s 1 -106482.90 3 +366046.35 4900.0 C57
2021-07-31 22:33:59 S 20 31 32.102 +20 41 17.30 V C57
2021-07-31 22:33:59 s 1 -106814.71 2 +365828.16 250.0 C57
2021-07-31 22:43:59 S 20 31 33.854 +20 42 16.81 V C57
2021-07-31 22:43:59 s 1 -107146.25 5 +365609.02 4670.0 C57
2021-07-31 22:53:59 S 20 31 35.556 +20 43 15.56 V C57
2021-07-31 22:53:59 s 1 -107477.52 9 +365388.95 8140.0 C57
2021-07-31 23:03:59 S 20 31 37.368 +20 44 15.14 V C57
2021-07-31 23:03:59 s 1 -107808.53 3 +365167.94 670.0 C57
2021-07-31 23:13:59 S 20 31 39.113 +20 45 14.11 V C57
2021-07-31 23:13:59 s 1 -108139.26 7 +364945.99 2250.0 C57
2021-07-31 23:23:59 S 20 31 40.922 +20 46 12.79 V C57
2021-07-31 23:23:59 s 1 -108469.72 9 +364723.10 2880.0 C57
2021-07-31 23:33:59 S 20 31 42.622 +20 47 11.00 V C57
2021-07-31 23:33:59 s 1 -108799.91 8 +364499.27 2550.0 C57
2021-07-31 23:53:59 S 20 31 46.171 +20 49 07.54 V C57
2021-07-31 23:53:59 s 1 -109459.47 5 +364048.79 9010.0 C57
2021-08-01 00:03:59 S 20 31 47.918 +20 50 07.26 V C57
2021-08-01 00:03:59 s 1 -109788.83 9 +363822.14 5800.0 C57
2021-08-01 00:13:59 S 20 31 49.680 +20 51 05.26 V C57
2021-08-01 00:13:59 s 1 -110117.92 7 +363594.54 1610.0 C57
2021-08-01 00:23:59 S 20 31 51.377 +20 52 04.51 V C57
2021-08-01 00:23:59 s 1 -110446.73 6 +363366.01 6460.0 C57
2021-08-01 00:35:43 C 20 34 25.65 +21 35 31.8 V 089
2021-08-01 00:39:01 C 20 34 26.04 +21 35 52.0 V 089
2021-08-01 00:42:19 C 20 34 26.42 +21 36 11.8 V 089
2021-08-01 00:43:59 S 20 31 54.931 +20 54 01.55 V C57
2021-08-01 00:43:59 s 1 -111103.51 4 +362906.11 3210.0 C57
2021-08-01 00:45:37 C 20 34 26.81 +21 36 31.2 V 089
2021-08-01 00:53:59 S 20 31 56.688 +20 54 59.87 V C57
2021-08-01 00:53:59 s 1 -111431.48 1 +362674.75 5110.0 C57
2021-08-01 01:06:57 V 20 34 37.77 +21 38 44.5 14.5 V 247
2021-08-01 01:06:57 v 1 285.10202 +40.68184 247
2021-08-01 01:09:56 V 20 34 38.14 +21 39 03.7 14.4 V 247
2021-08-01 01:09:56 v 1 285.10202 +40.68184 247
2021-08-01 01:10:55 V 20 34 38.27 +21 39 09.9 14.2 V 247
2021-08-01 01:10:55 v 1 285.10202 +40.68184 247
2021-08-01 01:12:55 V 20 34 38.49 +21 39 22.4 14.0 V 247
2021-08-01 01:12:55 v 1 285.10202 +40.68184 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)