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
2016-04-04 08:10:53 C 07 54 27.94 +54 59 07.6 L T05
2016-04-04 08:33:24 C 07 54 35.87 +54 59 40.0 L T05
2016-04-05 01:04:40 C 08 00 28.70 +55 23 04.6 u H21
2016-04-05 01:06:37 C 08 00 29.40 +55 23 07.0 u H21
2016-04-05 01:08:35 C 08 00 30.08 +55 23 09.9 u H21
2016-04-05 01:10:32 C 08 00 30.75 +55 23 12.3 u H21
2016-04-05 01:12:30 C 08 00 31.44 +55 23 15.1 u H21
2016-04-05 01:14:28 C 08 00 32.12 +55 23 17.6 u H21
2016-04-05 01:16:25 C 08 00 32.77 +55 23 20.3 u H21
2016-04-05 01:18:23 C 08 00 33.46 +55 23 22.9 u H21
2016-04-05 01:20:21 C 08 00 34.13 +55 23 25.3 u H21
2016-04-05 01:22:18 C 08 00 34.78 +55 23 27.9 u H21
2016-04-05 01:24:16 C 08 00 35.48 +55 23 30.5 u H21
2016-04-05 01:28:11 C 08 00 36.82 +55 23 35.8 u H21
2016-04-05 01:31:07 C 08 00 37.80 +55 23 39.9 u H21
2016-04-05 03:00:49 C 08 01 08.62 +55 25 39.8 q H45
2016-04-05 03:02:14 C 08 01 09.09 +55 25 41.7 q H45
2016-04-05 03:03:27 C 08 01 09.51 +55 25 43.3 q H45
2016-04-05 03:04:37 C 08 01 09.92 +55 25 44.9 q H45
2016-04-05 03:05:46 C 08 01 10.28 +55 25 46.4 q H45
2016-04-05 03:06:59 C 08 01 10.72 +55 25 48.0 q H45
2016-04-07 03:54:42 C 08 17 37.29 +56 21 58.2 q H45
2016-04-07 03:56:27 C 08 17 37.84 +56 21 59.9 q H45
2016-04-07 03:57:46 C 08 17 38.25 +56 22 01.3 q H45
2016-04-07 03:59:00 C 08 17 38.65 +56 22 02.5 q H45
2016-04-07 04:00:11 C 08 17 39.02 +56 22 03.5 q H45
2016-04-07 04:01:23 C 08 17 39.41 +56 22 04.6 q H45
2016-04-08 01:17:37 C 08 24 28.52 +56 41 38.3 u H21
2016-04-08 01:19:35 C 08 24 29.09 +56 41 40.1 u H21
2016-04-08 01:21:33 C 08 24 29.72 +56 41 41.6 u H21
2016-04-08 01:23:30 C 08 24 30.31 +56 41 43.4 u H21
2016-04-08 01:25:28 C 08 24 30.89 +56 41 44.9 u H21
2016-04-08 01:27:26 C 08 24 31.48 +56 41 46.8 u H21
2016-04-08 01:29:11 C 08 24 32.04 +56 41 48.3 u H21
2016-04-09 01:10:56 C 08 31 51.33 +57 00 29.6 u H21
2016-04-09 01:13:00 C 08 31 51.92 +57 00 30.9 u H21
2016-04-09 01:14:57 C 08 31 52.50 +57 00 32.5 u H21
2016-04-09 01:16:55 C 08 31 53.07 +57 00 34.1 u H21
2016-04-09 01:18:52 C 08 31 53.64 +57 00 35.4 u H21
2016-04-09 01:20:49 C 08 31 54.23 +57 00 36.8 u H21
2016-04-09 01:22:46 C 08 31 54.79 +57 00 38.1 u H21
2016-04-09 01:24:43 C 08 31 55.38 +57 00 39.6 u H21
2016-04-09 01:26:41 C 08 31 55.97 +57 00 41.1 u H21
2016-04-09 01:29:13 C 08 31 56.70 +57 00 42.9 u H21
2016-04-10 01:15:12 C 08 39 01.31 +57 16 32.2 u H21
2016-04-10 01:17:09 C 08 39 01.84 +57 16 33.6 u H21
2016-04-10 01:19:07 C 08 39 02.42 +57 16 34.8 u H21
2016-04-10 01:21:04 C 08 39 02.93 +57 16 35.9 u H21
2016-04-10 01:23:02 C 08 39 03.52 +57 16 37.2 u H21
2016-04-10 01:24:59 C 08 39 04.05 +57 16 38.2 u H21
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)