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
2016-04-23 02:23:52 C 09 51 56.30 +57 58 37.1 q H45
2016-04-23 02:25:55 C 09 51 56.65 +57 58 36.6 q H45
2016-04-23 02:27:40 C 09 51 57.02 +57 58 36.3 q H45
2016-04-23 02:29:45 C 09 51 57.41 +57 58 36.1 q H45
2016-04-23 02:31:00 C 09 51 57.66 +57 58 35.6 q H45
2016-04-24 02:38:19 C 09 56 20.73 +57 54 00.0 q H45
2016-04-24 02:39:45 C 09 56 20.93 +57 53 59.7 q H45
2016-04-24 02:41:03 C 09 56 21.15 +57 53 59.5 q H45
2016-04-24 02:42:25 C 09 56 21.42 +57 53 59.0 q H45
2016-04-24 02:43:46 C 09 56 21.66 +57 53 58.6 q H45
2016-04-24 02:45:12 C 09 56 21.92 +57 53 58.5 q H45
2016-04-25 03:37:48 C 10 00 44.61 +57 48 30.9 q H45
2016-04-25 03:39:21 C 10 00 44.88 +57 48 30.5 q H45
2016-04-25 03:41:29 C 10 00 45.24 +57 48 29.8 q H45
2016-04-25 03:43:10 C 10 00 45.50 +57 48 29.5 q H45
2016-04-25 03:44:28 C 10 00 45.73 +57 48 29.4 q H45
2016-04-25 03:46:01 C 10 00 46.00 +57 48 28.7 q H45
2016-04-26 02:48:54 C 10 04 42.63 +57 42 50.3 q H45
2016-04-26 02:50:15 C 10 04 42.83 +57 42 50.1 q H45
2016-04-26 02:51:31 C 10 04 43.07 +57 42 49.5 q H45
2016-04-26 02:53:16 C 10 04 43.36 +57 42 49.0 q H45
2016-04-26 02:54:52 C 10 04 43.58 +57 42 48.7 q H45
2016-04-26 02:56:29 C 10 04 43.86 +57 42 48.2 q H45
2016-04-27 20:10:22 C 10 11 30.43 +57 31 21.9 u 209
2016-04-27 20:16:10 C 10 11 31.26 +57 31 20.6 u 209
2016-04-27 20:21:59 C 10 11 32.36 +57 31 18.5 u 209
2016-04-27 20:34:08 C 10 11 34.32 +57 31 14.7 u 209
2016-04-27 20:39:57 C 10 11 35.29 +57 31 12.9 u 209
2016-04-27 20:46:39 C 10 11 36.23 +57 31 11.1 u 209
2016-04-27 20:52:28 C 10 11 37.14 +57 31 09.2 u 209
2016-04-28 03:31:39 C 10 12 40.94 +57 29 11.6 q H45
2016-04-28 03:33:09 C 10 12 41.15 +57 29 11.2 q H45
2016-04-28 03:34:37 C 10 12 41.39 +57 29 10.8 q H45
2016-04-28 03:35:55 C 10 12 41.58 +57 29 10.5 q H45
2016-04-28 03:37:20 C 10 12 41.81 +57 29 10.0 q H45
2016-04-28 03:38:44 C 10 12 42.01 +57 29 09.5 q H45
2016-04-28 21:05:10 C 10 15 27.23 +57 23 47.6 o Z22
2016-04-28 21:08:59 C 10 15 27.76 +57 23 46.6 o Z22
2016-04-28 21:12:53 C 10 15 28.37 +57 23 45.0 o Z22
2016-05-02 04:11:09 C 10 27 15.63 +56 56 22.9 q H45
2016-05-02 04:13:14 C 10 27 15.90 +56 56 22.2 q H45
2016-05-02 04:15:22 C 10 27 16.22 +56 56 21.2 q H45
2016-05-02 04:16:47 C 10 27 16.43 +56 56 20.9 q H45
2016-05-02 04:18:41 C 10 27 16.68 +56 56 20.1 q H45
2016-05-02 04:21:48 C 10 27 17.13 +56 56 18.9 q H45
2016-05-04 05:28:47 C 10 34 08.74 +56 37 12.0 q H45
2016-05-04 05:30:28 C 10 34 08.98 +56 37 11.3 q H45
2016-05-04 05:31:53 C 10 34 09.14 +56 37 10.1 q H45
2016-05-04 05:33:15 C 10 34 09.36 +56 37 09.9 q H45
2016-05-04 05:34:34 C 10 34 09.53 +56 37 09.4 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)