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
2006-03-18 23:52:59 C 11 11 09.30 +72 11 25.4 o A74
2006-03-18 23:54:08 C 11 11 09.39 +72 11 24.2 o A74
2006-03-18 23:55:17 C 11 11 09.50 +72 11 23.0 o A74
2006-03-18 23:57:36 C 11 11 09.70 +72 11 20.5 o A74
2006-03-19 14:04:33 C 11 12 40.52 +71 57 27.6 m 355
2006-03-19 14:06:39 C 11 12 40.64 +71 57 25.8 m 355
2006-03-19 14:09:05 C 11 12 40.85 +71 57 23.0 m 355
2006-03-19 14:11:51 C 11 12 41.05 +71 57 20.4 m 355
2006-03-19 14:13:49 C 11 12 41.22 +71 57 18.7 m 355
2006-03-19 22:16:12 C 11 13 29.07 +71 49 32.7 c 127
2006-03-19 22:21:21 C 11 13 29.47 +71 49 28.1 c 127
2006-03-19 22:26:24 C 11 13 29.85 +71 49 23.5 c 127
2006-03-19 22:31:26 C 11 13 30.22 +71 49 18.9 c 127
2006-03-20 13:50:15 C 11 14 52.53 +71 35 36.3 m 379
2006-03-20 13:53:09 C 11 14 52.69 +71 35 33.7 m 379
2006-03-20 13:56:01 C 11 14 52.81 +71 35 31.4 m 379
2006-03-20 14:01:45 C 11 14 53.12 +71 35 26.4 m 379
2006-03-20 14:30:38 C 11 14 54.89 +71 35 00.9 m 379
2006-03-20 14:42:07 C 11 14 55.55 +71 34 50.6 m 379
2006-03-20 14:45:00 C 11 14 55.68 +71 34 48.2 m 379
2006-03-20 14:47:53 C 11 14 55.85 +71 34 45.6 m 379
2006-03-23 20:55:52 C 11 20 17.49 +70 33 45.4 o A32
2006-03-23 21:08:28 C 11 20 18.05 +70 33 36.9 o A32
2006-03-23 21:22:50 C 11 20 18.61 +70 33 27.1 o A32
2006-03-23 21:35:08 C 11 20 19.14 +70 33 18.8 o A32
2006-03-23 21:49:39 C 11 20 19.75 +70 33 08.8 o A32
2006-03-24 13:45:29 C 11 21 10.55 +70 22 18.0 m 379
2006-03-24 13:51:15 C 11 21 10.71 +70 22 14.5 m 379
2006-03-24 13:54:08 C 11 21 10.86 +70 22 12.6 m 379
2006-03-24 13:57:00 C 11 21 10.87 +70 22 10.4 m 379
2006-03-29 19:09:21 C 11 26 30.154 +69 04 18.46 16.3 u A84
2006-03-29 19:13:32 C 11 26 30.258 +69 04 16.08 16.3 u A84
2006-03-29 19:15:48 C 11 26 30.309 +69 04 14.78 16.4 u A84
2006-03-29 19:18:04 C 11 26 30.351 +69 04 13.67 16.4 u A84
2006-03-29 19:20:19 C 11 26 30.411 +69 04 12.35 16.4 u A84
2006-03-29 19:22:34 C 11 26 30.451 +69 04 10.93 16.4 u A84
2006-03-29 19:24:50 C 11 26 30.528 +69 04 09.89 16.4 u A84
2006-03-29 19:27:05 C 11 26 30.588 +69 04 08.61 16.4 u A84
2006-03-29 19:31:36 C 11 26 30.671 +69 04 06.01 16.4 u A84
2006-03-29 19:33:52 C 11 26 30.725 +69 04 04.78 16.4 u A84
2006-03-29 19:36:07 C 11 26 30.777 +69 04 03.53 16.4 u A84
2006-03-29 19:38:23 C 11 26 30.829 +69 04 02.15 16.4 u A84
2006-03-29 19:40:38 C 11 26 30.891 +69 04 00.97 16.4 u A84
2006-03-29 19:42:54 C 11 26 30.940 +69 03 59.70 16.4 u A84
2006-03-29 19:45:09 C 11 26 30.995 +69 03 58.45 16.4 u A84
2006-03-29 19:47:25 C 11 26 31.055 +69 03 57.13 16.4 u A84
2006-03-29 19:49:40 C 11 26 31.097 +69 03 55.92 16.4 u A84
2006-03-29 19:51:56 C 11 26 31.151 +69 03 54.60 16.4 u A84
2006-03-29 19:54:11 C 11 26 31.204 +69 03 53.42 16.4 u A84
2006-03-29 20:01:27 C 11 26 31.360 +69 03 49.26 16.4 u A84
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)