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
2000-08-25 10:30:35 C 22 12 49.19 +12 52 02.1 c 658
2000-08-28 00:20:38 C 22 07 51.87 +11 19 10.5 118
2000-08-28 00:34:24 C 22 07 50.71 +11 18 48.8 118
2000-08-28 09:17:34 C 22 07 07.93 +11 05 04.5 c 658
2000-08-28 09:21:23 C 22 07 07.62 +11 04 58.1 c 658
2000-08-28 09:26:39 C 22 07 07.15 +11 04 50.1 c 658
2000-08-29 22:10:35 C 22 04 04.35 +10 05 10.8 c 046
2000-08-29 22:12:49 C 22 04 04.14 +10 05 07.1 c 046
2000-08-29 22:14:19 C 22 04 04.01 +10 05 04.6 c 046
2000-08-29 22:16:15 C 22 04 03.89 +10 05 01.2 c 046
2000-08-29 22:21:19 C 22 04 03.42 +10 04 52.9 c 046
2000-09-01 05:03:46 C 21 59 24.90 +08 30 58.5 17.4 c 704
2000-09-01 05:22:46 C 21 59 23.23 +08 30 24.9 17.5 c 704
2000-09-01 05:41:45 C 21 59 21.57 +08 29 51.5 17.4 c 704
2000-09-01 06:00:45 C 21 59 19.88 +08 29 17.6 17.6 c 704
2000-09-02 03:21:29 C 21 57 29.58 +07 50 56.6 i 739
2000-09-02 03:23:12 C 21 57 29.48 +07 50 54.1 i 739
2000-09-03 15:21:22 C 21 54 21.21 +06 44 25.9 z 402
2000-09-03 15:23:11 C 21 54 21.07 +06 44 22.7 z 402
2000-09-03 15:24:59 C 21 54 20.91 +06 44 19.2 z 402
2000-09-07 05:00:37 C 21 46 49.05 +03 57 00.1 c 670
2000-09-07 06:00:13 C 21 46 43.58 +03 55 01.4 c 670
2000-09-08 21:25:31 C 21 43 14.21 +02 34 01.7 118
2000-09-08 21:30:39 C 21 43 13.75 +02 33 50.8 118
2000-09-10 20:15:56 C 21 39 06.12 +00 55 12.7 118
2000-09-10 20:23:00 C 21 39 05.46 +00 54 56.9 118
2000-09-19 03:50:02 C 21 22 04.51 -06 26 04.2 c 699
2000-09-19 04:20:04 C 21 22 02.00 -06 27 11.6 c 699
2000-09-19 04:50:02 C 21 21 59.48 -06 28 19.1 c 699
2000-09-19 05:20:03 C 21 21 56.96 -06 29 26.4 c 699
2000-09-21 04:28:11 C 21 18 10.97 -08 15 21.7 17.2 c 704
2000-09-21 04:49:09 C 21 18 09.27 -08 16 08.7 17.4 c 704
2000-09-21 05:13:10 C 21 18 07.32 -08 17 02.4 17.8 c 704
2000-09-21 05:34:35 C 21 18 05.58 -08 17 50.4 17.8 c 704
2000-09-21 05:55:58 C 21 18 03.85 -08 18 37.9 17.5 c 704
2000-09-21 20:06:40 C 21 16 57.72 -08 50 25.4 071
2000-09-21 20:16:01 C 21 16 56.88 -08 50 47.6 071
2000-09-21 20:20:59 C 21 16 56.54 -08 50 58.8 071
2000-09-23 04:14:39 C 21 14 30.29 -10 02 09.3 17.5 c 704
2000-09-23 04:35:43 C 21 14 28.64 -10 02 55.8 17.9 c 704
2000-09-23 04:56:43 C 21 14 26.97 -10 03 43.0 17.8 c 704
2000-09-23 05:17:46 C 21 14 25.32 -10 04 29.8 17.6 c 704
2000-09-23 05:38:49 C 21 14 23.67 -10 05 16.9 17.7 c 704
2000-09-24 19:39:39 C 21 11 35.28 -11 29 29.6 16.9 c 106
2000-09-24 20:10:46 C 21 11 33.01 -11 30 38.1 18.1 c 106
2000-09-24 20:44:18 C 21 11 30.55 -11 31 52.3 17.8 c 106
2000-09-25 06:57:14 C 21 10 46.41 -11 54 18.5 17.8 c 608
2000-09-25 07:12:32 C 21 10 45.23 -11 54 51.9 17.9 c 608
2000-09-25 07:29:48 C 21 10 43.96 -11 55 29.9 18.7 c 608
2000-09-26 02:41:45 C 21 09 22.56 -12 37 30.6 c 699
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)