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
2016-03-18 02:39:37 C 04 54 54.02 +20 16 01.4 q 703
2016-03-18 02:48:19 C 04 54 57.88 +20 17 28.1 q 703
2016-03-18 02:57:00 C 04 55 01.75 +20 18 54.5 q 703
2016-03-19 18:52:23 C 05 13 17.30 +26 39 49.3 q 160
2016-03-19 18:54:41 C 05 13 18.34 +26 40 10.1 q 160
2016-03-19 18:57:00 C 05 13 19.40 +26 40 31.0 q 160
2016-03-20 03:50:01 C 05 17 24.66 +27 59 56.9 q H45
2016-03-20 03:51:08 C 05 17 25.17 +28 00 06.8 q H45
2016-03-20 03:52:05 C 05 17 25.62 +28 00 15.1 q H45
2016-03-20 03:53:14 C 05 17 26.14 +28 00 25.0 q H45
2016-03-20 03:54:08 C 05 17 26.53 +28 00 33.0 q H45
2016-03-20 03:55:08 C 05 17 27.01 +28 00 41.8 q H45
2016-03-20 05:25:54 C 05 18 09.93 +28 14 16.1 L T05
2016-03-20 05:32:10 C 05 18 12.75 +28 15 10.7 L T05
2016-03-20 05:56:53 C 05 18 23.94 +28 18 46.7 L T05
2016-03-20 06:21:51 C 05 18 35.27 +28 22 24.2 L T05
2016-03-21 03:56:11 C 05 28 35.23 +31 24 33.1 q H45
2016-03-21 03:57:08 C 05 28 35.69 +31 24 41.0 q H45
2016-03-21 03:58:11 C 05 28 36.17 +31 24 49.4 q H45
2016-03-21 03:59:22 C 05 28 36.70 +31 24 58.9 q H45
2016-03-21 04:00:33 C 05 28 37.26 +31 25 08.8 q H45
2016-03-21 04:01:36 C 05 28 37.75 +31 25 17.2 q H45
2016-03-22 00:48:25 C 05 38 19.13 +34 08 25.7 u H21
2016-03-22 00:50:36 C 05 38 20.13 +34 08 42.1 u H21
2016-03-22 00:52:40 C 05 38 21.07 +34 08 57.6 u H21
2016-03-22 00:54:38 C 05 38 21.98 +34 09 12.4 u H21
2016-03-22 00:56:42 C 05 38 22.91 +34 09 28.0 u H21
2016-03-22 00:58:46 C 05 38 23.87 +34 09 43.6 u H21
2016-03-22 01:00:50 C 05 38 24.81 +34 09 59.1 u H21
2016-03-22 01:02:54 C 05 38 25.76 +34 10 14.7 u H21
2016-03-22 01:04:59 C 05 38 26.71 +34 10 30.2 u H21
2016-03-22 01:07:03 C 05 38 27.66 +34 10 45.7 u H21
2016-03-22 01:09:07 C 05 38 28.59 +34 11 01.3 u H21
2016-03-22 01:11:11 C 05 38 29.55 +34 11 16.8 u H21
2016-03-22 01:13:15 C 05 38 30.48 +34 11 32.3 u H21
2016-03-22 01:15:19 C 05 38 31.44 +34 11 47.8 u H21
2016-03-22 01:17:23 C 05 38 32.39 +34 12 03.4 u H21
2016-03-22 01:19:27 C 05 38 33.33 +34 12 18.8 u H21
2016-03-22 01:21:30 C 05 38 34.28 +34 12 34.3 u H21
2016-03-22 01:23:33 C 05 38 35.21 +34 12 49.6 u H21
2016-03-22 01:25:36 C 05 38 36.15 +34 13 05.0 u H21
2016-03-22 01:27:39 C 05 38 37.09 +34 13 20.4 u H21
2016-03-22 01:29:35 C 05 38 37.97 +34 13 35.0 u H21
2016-03-22 01:32:09 C 05 38 39.15 +34 13 54.2 u H21
2016-03-22 02:14:08 C 05 38 58.48 +34 19 11.3 q H45
2016-03-22 02:15:29 C 05 38 59.09 +34 19 21.2 q H45
2016-03-22 02:16:25 C 05 38 59.52 +34 19 28.2 q H45
2016-03-22 02:17:19 C 05 38 59.94 +34 19 35.0 q H45
2016-03-22 02:18:22 C 05 39 00.43 +34 19 42.9 q H45
2016-03-22 02:19:26 C 05 39 00.91 +34 19 50.8 q H45
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)