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
2011-03-31 22:22:28 C 09 10 46.79 +64 33 50.1 c A24
2011-04-01 21:01:09 C 09 17 53.95 +64 35 48.4 c A24
2011-04-01 21:12:26 C 09 17 57.27 +64 35 48.7 c A24
2011-04-01 21:20:03 C 09 17 59.51 +64 35 48.9 c A24
2011-04-01 21:39:29 C 09 18 05.22 +64 35 49.4 c A24
2011-04-01 21:47:06 C 09 18 07.48 +64 35 49.5 c A24
2011-04-01 21:58:22 C 09 18 10.78 +64 35 49.7 c A24
2011-04-02 03:54:12 C 09 19 58.94 +64 36 07.1 r 703
2011-04-02 04:03:31 C 09 20 01.64 +64 36 07.0 r 703
2011-04-02 04:12:54 C 09 20 04.30 +64 36 07.3 r 703
2011-04-02 20:24:45 C 09 24 47.47 +64 35 58.4 c A24
2011-04-02 20:36:20 C 09 24 50.66 +64 35 57.9 c A24
2011-04-02 20:44:08 C 09 24 52.81 +64 35 57.6 c A24
2011-04-02 21:04:03 C 09 24 58.29 +64 35 56.8 c A24
2011-04-02 21:11:51 C 09 25 00.44 +64 35 56.3 c A24
2011-04-02 21:23:26 C 09 25 03.63 +64 35 56.0 c A24
2011-04-04 00:20:54 C 09 32 28.56 +64 34 06.9 u I15
2011-04-04 00:27:12 C 09 32 30.18 +64 34 06.3 u I15
2011-04-04 00:33:32 C 09 32 31.80 +64 34 05.7 u I15
2011-04-05 21:51:19 C 09 43 48.74 +64 27 10.4 c A24
2011-04-05 21:52:21 C 09 43 48.97 +64 27 10.2 c A24
2011-04-05 22:15:00 C 09 43 54.16 +64 27 05.2 c A24
2011-04-05 22:38:21 C 09 43 59.50 +64 27 00.0 c A24
2011-04-05 23:01:20 C 09 44 04.74 +64 26 54.7 c A24
2011-04-05 23:02:23 C 09 44 04.96 +64 26 54.6 c A24
2011-04-06 20:48:43 C 09 49 04.96 +64 22 13.0 c A24
2011-04-06 20:49:45 C 09 49 05.20 +64 22 13.0 c A24
2011-04-06 21:12:12 C 09 49 10.02 +64 22 07.4 c A24
2011-04-06 21:35:42 C 09 49 15.07 +64 22 01.4 c A24
2011-04-06 21:58:09 C 09 49 19.89 +64 21 55.9 c A24
2011-04-06 21:58:56 C 09 49 20.01 +64 21 55.8 o 130
2011-04-06 21:59:11 C 09 49 20.12 +64 21 55.6 c A24
2011-04-06 22:01:06 C 09 49 20.44 +64 21 55.1 o 130
2011-04-06 22:02:34 C 09 49 20.76 +64 21 54.8 o 130
2011-04-06 22:04:00 C 09 49 21.09 +64 21 54.4 o 130
2011-04-07 20:33:17 C 09 54 13.99 +64 16 13.0 c A24
2011-04-07 20:34:20 C 09 54 14.22 +64 16 12.6 c A24
2011-04-08 21:23:56 C 09 59 19.29 +64 09 06.6 c A24
2011-04-08 21:24:59 C 09 59 19.49 +64 09 06.2 c A24
2011-04-08 21:38:19 C 09 59 22.07 +64 09 02.1 c A24
2011-04-08 21:52:41 C 09 59 24.85 +64 08 57.4 c A24
2011-04-08 22:06:02 C 09 59 27.40 +64 08 53.1 c A24
2011-04-08 22:07:04 C 09 59 27.60 +64 08 52.8 c A24
2011-04-09 19:51:55 C 10 03 42.24 +64 02 03.7 a 233
2011-04-09 19:56:45 C 10 03 43.23 +64 02 03.0 a 233
2011-04-09 20:01:46 C 10 03 44.03 +64 02 00.1 a 233
2011-04-09 20:09:16 C 10 03 45.35 +64 01 57.2 a 233
2011-04-09 21:01:03 C 10 03 55.04 +64 01 40.8 c A24
2011-04-09 21:02:05 C 10 03 55.19 +64 01 40.6 c A24
2011-04-09 21:24:12 C 10 03 59.26 +64 01 33.2 c A24
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)