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
2016-03-26 01:59:20 C 06 23 10.84 +44 09 39.0 u H21
2016-03-26 02:01:24 C 06 23 11.77 +44 09 49.1 u H21
2016-03-26 02:03:28 C 06 23 12.69 +44 09 59.3 u H21
2016-03-26 02:05:33 C 06 23 13.61 +44 10 09.2 u H21
2016-03-26 02:07:37 C 06 23 14.53 +44 10 19.5 u H21
2016-03-26 02:09:41 C 06 23 15.47 +44 10 29.5 u H21
2016-03-26 02:11:45 C 06 23 16.40 +44 10 39.7 u H21
2016-03-26 02:13:49 C 06 23 17.30 +44 10 49.7 u H21
2016-03-26 02:15:54 C 06 23 18.23 +44 10 59.8 u H21
2016-03-26 02:17:58 C 06 23 19.17 +44 11 09.8 u H21
2016-03-26 02:20:02 C 06 23 20.08 +44 11 20.0 u H21
2016-03-26 02:22:06 C 06 23 21.01 +44 11 30.2 u H21
2016-03-26 02:24:11 C 06 23 21.93 +44 11 40.2 u H21
2016-03-26 02:26:15 C 06 23 22.85 +44 11 50.2 u H21
2016-03-26 02:28:19 C 06 23 23.78 +44 12 00.3 u H21
2016-03-26 02:30:11 C 06 23 24.60 +44 12 09.3 u H21
2016-03-29 02:24:45 C 06 55 13.65 +49 08 40.8 q H45
2016-03-29 02:27:40 C 06 55 14.89 +49 08 50.7 q H45
2016-03-29 02:28:43 C 06 55 15.32 +49 08 54.1 q H45
2016-03-29 02:30:11 C 06 55 15.93 +49 08 59.1 q H45
2016-03-29 02:31:32 C 06 55 16.51 +49 09 03.8 q H45
2016-03-29 02:32:33 C 06 55 16.94 +49 09 07.1 q H45
2016-03-30 01:06:23 C 07 04 52.90 +50 21 41.9 u H21
2016-03-30 01:08:21 C 07 04 53.70 +50 21 47.7 u H21
2016-03-30 01:10:19 C 07 04 54.51 +50 21 53.7 u H21
2016-03-30 01:12:16 C 07 04 55.32 +50 21 59.6 u H21
2016-03-30 01:14:14 C 07 04 56.13 +50 22 05.6 u H21
2016-03-30 01:16:12 C 07 04 56.94 +50 22 11.5 u H21
2016-03-30 01:18:09 C 07 04 57.74 +50 22 17.3 u H21
2016-03-30 01:20:06 C 07 04 58.54 +50 22 23.2 u H21
2016-03-30 01:22:03 C 07 04 59.34 +50 22 29.1 u H21
2016-03-30 01:24:00 C 07 05 00.15 +50 22 35.0 u H21
2016-03-30 01:25:57 C 07 05 00.96 +50 22 40.8 u H21
2016-04-01 03:12:28 C 07 25 21.49 +52 34 42.8 q H45
2016-04-01 03:13:26 C 07 25 21.88 +52 34 45.1 q H45
2016-04-01 03:14:42 C 07 25 22.37 +52 34 47.9 q H45
2016-04-01 03:15:46 C 07 25 22.79 +52 34 50.3 q H45
2016-04-01 03:16:45 C 07 25 23.19 +52 34 52.6 q H45
2016-04-01 03:18:19 C 07 25 23.78 +52 34 56.2 q H45
2016-04-03 02:47:01 C 07 43 43.01 +54 11 18.2 q 703
2016-04-03 02:55:25 C 07 43 45.52 +54 11 30.5 q H45
2016-04-03 02:56:49 C 07 43 46.03 +54 11 32.9 q H45
2016-04-03 02:57:54 C 07 43 46.42 +54 11 34.9 q H45
2016-04-03 02:58:52 C 07 43 47.32 +54 11 39.0 q 703
2016-04-03 02:58:57 C 07 43 46.82 +54 11 36.7 q H45
2016-04-03 03:00:37 C 07 43 47.43 +54 11 39.7 q H45
2016-04-03 03:01:55 C 07 43 47.90 +54 11 41.9 q H45
2016-04-03 03:16:24 C 07 43 53.68 +54 12 09.8 q 703
2016-04-04 07:23:47 C 07 54 11.39 +54 57 58.9 L T05
2016-04-04 07:47:10 C 07 54 19.56 +54 58 33.2 L T05
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)