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
2016-04-10 01:27:08 C 08 39 04.65 +57 16 39.5 u H21
2016-04-12 01:07:57 C 08 52 30.50 +57 40 50.3 u H21
2016-04-12 01:10:54 C 08 52 31.23 +57 40 51.5 u H21
2016-04-12 01:13:50 C 08 52 32.03 +57 40 52.6 u H21
2016-04-12 01:16:47 C 08 52 32.80 +57 40 54.0 u H21
2016-04-12 01:19:43 C 08 52 33.59 +57 40 55.0 u H21
2016-04-12 01:22:39 C 08 52 34.37 +57 40 56.2 u H21
2016-04-12 01:25:35 C 08 52 35.14 +57 40 57.3 u H21
2016-04-13 01:18:00 C 08 58 56.68 +57 49 46.1 u H21
2016-04-13 01:20:31 C 08 58 57.29 +57 49 47.1 u H21
2016-04-13 01:23:03 C 08 58 57.95 +57 49 47.8 u H21
2016-04-13 01:25:33 C 08 58 58.58 +57 49 48.7 u H21
2016-04-13 01:28:04 C 08 58 59.23 +57 49 49.4 u H21
2016-04-13 01:30:35 C 08 58 59.88 +57 49 50.3 u H21
2016-04-13 01:33:06 C 08 59 00.50 +57 49 51.2 u H21
2016-04-13 11:53:22 C 09 01 41.29 +57 53 05.6 q D29
2016-04-13 12:15:29 C 09 01 46.68 +57 53 11.7 q D29
2016-04-13 12:37:36 C 09 01 52.41 +57 53 18.1 q D29
2016-04-14 06:54:05 C 09 06 30.22 +57 58 10.0 L T05
2016-04-14 06:56:50 C 09 06 30.81 +57 58 10.5 L T05
2016-04-14 07:36:47 C 09 06 40.54 +57 58 19.6 L T05
2016-04-14 07:40:55 C 09 06 41.54 +57 58 20.5 L T05
2016-04-15 01:32:38 S 09 11 06.466 +58 01 55.74 L C51
2016-04-17 01:20:39 C 09 22 18.35 +58 07 58.4 u H21
2016-04-17 01:23:10 C 09 22 18.92 +58 07 58.9 u H21
2016-04-17 01:25:41 C 09 22 19.46 +58 07 59.3 u H21
2016-04-17 01:28:12 C 09 22 20.01 +58 07 59.5 u H21
2016-04-17 01:30:43 C 09 22 20.56 +58 07 59.6 u H21
2016-04-17 01:33:14 C 09 22 21.13 +58 07 59.7 u H21
2016-04-17 01:35:45 C 09 22 21.68 +58 07 59.8 u H21
2016-04-17 01:38:16 C 09 22 22.24 +58 07 59.9 u H21
2016-04-17 01:40:47 C 09 22 22.81 +58 08 00.2 u H21
2016-04-17 01:43:17 C 09 22 23.35 +58 08 00.4 u H21
2016-04-17 01:45:48 C 09 22 23.92 +58 08 00.6 u H21
2016-04-17 01:48:56 C 09 22 24.59 +58 08 00.8 u H21
2016-04-18 02:22:29 C 09 27 51.53 +58 09 01.6 q H21
2016-04-18 02:27:15 C 09 27 52.54 +58 09 01.5 q H21
2016-04-18 02:32:00 C 09 27 53.54 +58 09 01.6 q H21
2016-04-18 02:36:39 C 09 27 54.52 +58 09 01.6 q H21
2016-04-18 02:41:19 C 09 27 55.52 +58 09 01.6 q H21
2016-04-18 02:46:05 C 09 27 56.54 +58 09 01.6 q H21
2016-04-18 02:50:48 C 09 27 57.54 +58 09 01.8 q H21
2016-04-18 05:48:43 C 09 28 35.78 +58 09 03.5 q 703
2016-04-18 05:56:49 C 09 28 37.42 +58 09 03.7 q 703
2016-04-18 06:04:55 C 09 28 39.21 +58 09 03.1 q 703
2016-04-18 06:13:01 C 09 28 40.92 +58 09 03.1 q 703
2016-04-22 02:33:17 C 09 47 28.14 +58 02 26.0 t 705
2016-04-22 02:34:44 C 09 47 28.41 +58 02 25.9 t 705
2016-04-22 02:36:11 C 09 47 28.67 +58 02 25.8 t 705
2016-04-23 02:21:55 C 09 51 55.97 +57 58 37.4 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)