23187 (2000 PN9)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5893652209 ± 4.57e-09
Semi-major axis (a)1.8469477145 AU ± 3.08e-10
Inclination (i)51.33590425° ± 2.99e-06
Long. of Asc. Node (Ω)164.28086830° ± 2.07e-07
Arg. of Perihelion (ω)293.54110100° ± 1.16e-06
Mean Anomaly (M)324.53859175° ± 7.01e-07
Mean Motion (n)0.3926723979°/day ± 9.83e-11
Perihelion dist (q)0.75842097 AU ± 8.45e-09
Aphelion dist (Q)2.93547446 AU ± 8.46e-09
Orbital Period2.51004728 yr ± 6.28e-10
Physical Parameters
H (abs. magnitude)16.05
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.292″
Uncertainty0
Orbit TypeApollo
MOID0.014129 AU
Observations Used2223
Radar Obs Used8
Gaia Obs Used118
Oppositions16
Arc Total1990-2025
First Observation Used1990-08-02
Last Observation Used2025-11-12
Observations (2307)
Date Type RA Dec Mag Band Observatory
2006-04-04 22:27:01 C 11 31 21.97 +67 41 01.1 o J65
2006-04-04 22:29:02 C 11 31 22.06 +67 40 58.9 o J65
2006-04-07 05:38:01 C 11 33 05.81 +67 10 28.1 16.9 c 704
2006-04-07 05:53:57 C 11 33 06.22 +67 10 19.2 17.2 c 704
2006-04-07 06:09:39 C 11 33 06.52 +67 10 10.6 17.2 c 704
2006-04-07 06:25:12 C 11 33 06.89 +67 10 01.6 17.4 c 704
2006-04-07 06:40:55 C 11 33 07.21 +67 09 53.1 17.1 c 704
2006-04-08 23:43:08 C 11 34 24.32 +66 46 56.6 17.14 o 084
2006-04-08 23:45:15 C 11 34 24.35 +66 46 55.2 16.93 o 084
2006-04-10 22:40:43 C 11 35 54.08 +66 20 46.0 17.11 o 084
2006-04-10 22:42:50 C 11 35 54.13 +66 20 45.0 17.03 o 084
2006-04-22 21:32:19 C 11 45 43.37 +63 35 34.4 o A74
2006-04-22 21:34:25 C 11 45 43.45 +63 35 33.3 o A74
2006-04-22 21:35:28 C 11 45 43.43 +63 35 32.6 o A74
2006-04-22 21:37:34 C 11 45 43.53 +63 35 31.6 o A74
2006-04-22 21:38:36 C 11 45 43.55 +63 35 30.6 o A74
2006-04-22 21:41:44 C 11 45 43.67 +63 35 29.0 o A74
2006-04-22 21:42:47 C 11 45 43.68 +63 35 28.2 o A74
2006-04-22 21:43:50 C 11 45 43.70 +63 35 27.5 o A74
2006-04-22 21:45:55 C 11 45 43.79 +63 35 26.4 o A74
2006-04-22 21:46:58 C 11 45 43.81 +63 35 25.7 o A74
2006-04-22 21:48:00 C 11 45 43.89 +63 35 24.8 o A74
2006-04-22 21:49:03 C 11 45 43.87 +63 35 24.2 o A74
2006-04-22 21:50:06 C 11 45 43.93 +63 35 23.8 o A74
2006-04-22 21:53:14 C 11 45 44.03 +63 35 21.9 o A74
2006-04-22 21:54:17 C 11 45 44.09 +63 35 21.4 o A74
2006-04-22 21:59:30 C 11 45 44.26 +63 35 18.2 o A74
2006-04-22 22:00:33 C 11 45 44.25 +63 35 17.7 o A74
2006-05-05 04:48:32 C 11 57 35.39 +60 33 18.3 18.8 c 704
2006-05-05 05:06:49 C 11 57 36.10 +60 33 06.7 19.1 c 704
2006-05-05 05:21:13 C 11 57 36.71 +60 32 57.1 19.4 c 704
2006-05-05 05:40:01 C 11 57 37.38 +60 32 45.4 19.1 c 704
2006-05-05 05:59:34 C 11 57 38.13 +60 32 32.3 18.9 c 704
2006-05-05 08:12:27 C 11 57 43.48 +60 31 05.9 r 703
2006-05-05 08:18:48 C 11 57 43.84 +60 31 02.1 r 703
2006-05-05 08:25:09 C 11 57 44.02 +60 30 57.6 r 703
2006-05-05 08:31:31 C 11 57 44.31 +60 30 53.8 r 703
2009-07-16 04:07:40 C 17 06 47.98 +43 46 23.5 o H55
2009-07-16 04:30:27 C 17 06 47.15 +43 46 11.2 o H55
2009-07-16 04:52:41 C 17 06 46.29 +43 45 58.9 o H55
2010-06-10 09:08:10 C 22 34 24.69 +22 15 36.3 o 691
2010-06-11 08:20:56 C 22 34 56.09 +22 21 21.9 o 691
2010-06-11 08:47:46 C 22 34 56.54 +22 21 28.0 o 691
2010-06-11 09:14:37 C 22 34 57.13 +22 21 34.8 o 691
2010-07-18 21:29:48 C 22 38 00.96 +24 06 15.0 u A13
2010-07-18 21:55:44 C 22 38 00.48 +24 06 12.9 u A13
2010-07-20 08:06:27 C 22 37 16.43 +24 02 31.3 19.0 c 704
2010-07-20 08:22:39 C 22 37 16.08 +24 02 28.6 19.2 c 704
2010-07-20 08:38:58 C 22 37 15.68 +24 02 26.8 19.5 c 704
2010-07-20 08:54:46 C 22 37 15.28 +24 02 23.8 19.3 c 704
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2001-03-03 09:45:00 -89603 3 Hz 2380 -1 -1
2001-03-03 11:20:00 62195926.9 10 us 8560 -14 -14
2001-03-03 11:20:00 -345113.8 5 Hz 8560 -14 -14
2001-03-04 10:29:00 67714671.08 2 us 2380 -1 -1
2001-03-05 10:04:00 76798876 2 us 2380 -1 -1
2006-03-07 17:10:00 34277451 20 us 8560 -14 -14
2006-03-07 19:00:00 35392186 3 us 8560 -14 -14
2006-03-07 20:10:00 36111353.6 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)