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
2010-08-14 21:58:15 C 22 10 13.38 +19 30 39.4 u J28
2010-08-14 22:32:50 C 22 10 11.06 +19 30 08.9 u J28
2010-08-15 06:33:02 C 22 09 39.38 +19 23 15.9 18.7 c 704
2010-08-15 06:51:05 C 22 09 38.09 +19 23 00.4 18.9 c 704
2010-08-15 07:09:05 C 22 09 36.93 +19 22 44.5 18.8 c 704
2010-08-15 07:27:04 C 22 09 35.67 +19 22 28.8 19.0 c 704
2010-08-15 07:45:06 C 22 09 34.47 +19 22 13.1 18.7 c 704
2010-08-19 22:57:25 C 22 01 51.59 +17 34 46.0 w 160
2010-08-19 22:59:57 C 22 01 51.41 +17 34 43.3 w 160
2010-08-19 23:02:29 C 22 01 51.24 +17 34 40.6 w 160
2010-08-22 21:45:22 C 21 56 36.81 +16 15 14.6 u 160
2010-08-22 21:48:48 C 21 56 36.53 +16 15 10.6 u 160
2010-08-22 21:52:10 C 21 56 36.26 +16 15 06.9 u 160
2010-08-23 22:10:24 C 21 54 45.06 +15 45 46.6 u B88
2010-08-23 22:38:48 C 21 54 42.79 +15 45 11.2 u B88
2010-08-23 23:07:13 C 21 54 40.51 +15 44 36.2 u B88
2010-08-24 22:52:32 C 21 52 50.55 +15 14 52.1 u 160
2010-08-24 22:55:32 C 21 52 50.28 +15 14 49.5 u 160
2010-08-24 22:58:23 C 21 52 50.02 +15 14 45.9 u 160
2010-08-25 22:55:16 C 21 50 57.77 +14 43 47.5 u 160
2010-08-25 22:57:52 C 21 50 57.56 +14 43 44.5 u 160
2010-08-25 23:00:48 C 21 50 57.33 +14 43 40.8 u 160
2010-08-28 23:37:50 C 21 45 10.52 +13 03 39.9 u 160
2010-08-28 23:41:47 C 21 45 10.20 +13 03 33.9 u 160
2010-08-28 23:45:44 C 21 45 09.90 +13 03 28.1 u 160
2010-08-29 21:31:26 C 21 43 24.70 +12 31 45.7 u A53
2010-08-29 21:40:23 C 21 43 24.05 +12 31 31.2 u A53
2010-08-29 22:34:18 C 21 43 19.55 +12 30 12.1 u 160
2010-08-29 22:38:08 C 21 43 19.24 +12 30 06.5 u 160
2010-08-29 22:40:39 C 21 43 19.02 +12 30 02.7 u 160
2010-08-31 00:14:50 C 21 41 14.33 +11 51 42.7 u 160
2010-08-31 00:18:38 C 21 41 14.04 +11 51 36.8 u 160
2010-08-31 00:22:58 C 21 41 13.67 +11 51 30.0 u 160
2010-08-31 23:24:20 C 21 39 21.24 +11 16 05.0 u 160
2010-08-31 23:26:34 C 21 39 21.06 +11 16 01.7 u 160
2010-08-31 23:28:07 C 21 39 20.93 +11 15 59.3 u 160
2010-09-01 22:48:57 C 21 37 26.60 +10 39 12.5 u 160
2010-09-01 22:51:53 C 21 37 26.35 +10 39 07.6 u 160
2010-09-01 22:54:40 C 21 37 26.12 +10 39 03.3 u 160
2010-09-04 20:26:38 C 21 31 45.30 +08 44 41.0 u A78
2010-09-04 20:34:16 C 21 31 44.65 +08 44 27.7 u A78
2010-09-04 20:54:31 C 21 31 42.92 +08 43 53.6 u A78
2010-09-04 21:01:02 C 21 31 42.41 +08 43 42.5 u A78
2010-09-06 05:51:25 C 21 29 01.76 +07 47 23.0 17.9 c 704
2010-09-06 06:08:22 C 21 29 00.34 +07 46 53.2 18.1 c 704
2010-09-06 06:25:16 C 21 28 58.92 +07 46 24.2 18.2 c 704
2010-09-06 06:42:12 C 21 28 57.51 +07 45 54.0 17.9 c 704
2010-09-06 06:59:15 C 21 28 56.10 +07 45 24.9 18.2 c 704
2010-09-11 22:40:31 C 21 18 07.86 +03 39 21.0 u 160
2010-09-11 22:44:30 C 21 18 07.55 +03 39 13.6 u 160
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)