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
1990-08-02 09:29:59 23 06 28.51 +19 46 17.1 261
1990-08-02 10:50:00 23 06 26.48 +19 45 38.3 261
1990-08-21 07:52:00 22 46 30.30 +13 14 11.0 261
1990-08-21 09:17:00 22 46 24.77 +13 12 17.4 261
2000-08-08 07:29:54 C 22 39 09.61 +19 54 59.7 18.6 c 704
2000-08-08 07:50:02 C 22 39 08.61 +19 54 45.7 19.0 c 704
2000-08-08 08:10:11 C 22 39 07.63 +19 54 33.3 19.1 c 704
2000-08-08 08:30:20 C 22 39 06.55 +19 54 18.5 18.8 c 704
2000-08-08 08:50:30 C 22 39 05.55 +19 54 06.0 19.1 c 704
2000-08-08 22:36:41 C 22 38 25.26 +19 44 44.8 d 557
2000-08-08 22:42:23 C 22 38 24.96 +19 44 41.2 d 557
2000-08-08 22:45:14 C 22 38 24.83 +19 44 39.3 d 557
2000-08-09 07:14:40 C 22 37 59.39 +19 38 48.2 18.6 c 704
2000-08-09 07:35:09 C 22 37 58.34 +19 38 34.6 18.8 c 704
2000-08-09 07:55:32 C 22 37 57.29 +19 38 20.1 18.5 c 704
2000-08-09 08:16:03 C 22 37 56.18 +19 38 04.8 18.6 c 704
2000-08-09 08:36:24 C 22 37 55.08 +19 37 51.1 18.8 c 704
2000-08-09 16:10:12 C 22 37 32.03 +19 32 37.5 422
2000-08-09 16:11:42 C 22 37 32.05 +19 32 36.8 422
2000-08-09 16:14:36 C 22 37 31.86 +19 32 34.7 422
2000-08-09 20:06:01 C 22 37 20.45 +19 29 37.2 d 557
2000-08-09 20:08:23 C 22 37 20.32 +19 29 35.5 d 557
2000-08-09 20:20:24 C 22 37 19.71 +19 29 26.6 d 557
2000-08-09 20:38:49 C 22 37 18.96 +19 29 13.2 104
2000-08-09 20:41:29 C 22 37 18.60 +19 29 12.3 104
2000-08-09 20:44:10 C 22 37 18.46 +19 29 10.8 104
2000-08-09 21:24:51 C 22 37 16.33 +19 28 40.2 c 046
2000-08-09 21:27:56 C 22 37 16.17 +19 28 38.8 c 046
2000-08-09 21:29:21 C 22 37 16.10 +19 28 38.1 c 046
2000-08-09 21:30:52 C 22 37 16.00 +19 28 36.5 c 046
2000-08-09 21:32:26 C 22 37 15.91 +19 28 35.8 c 046
2000-08-09 21:38:20 C 22 37 15.54 +19 28 28.7 611
2000-08-09 21:45:36 C 22 37 15.35 +19 28 25.5 611
2000-08-09 21:50:10 C 22 37 15.07 +19 28 22.3 611
2000-08-10 18:40:37 C 22 36 09.07 +19 13 05.9 413
2000-08-10 18:43:34 C 22 36 08.95 +19 13 04.4 413
2000-08-10 18:46:31 C 22 36 08.78 +19 13 01.7 413
2000-08-10 21:40:02 C 22 36 00.13 +19 10 40.1 d 557
2000-08-10 21:42:26 C 22 36 00.14 +19 10 38.8 d 557
2000-08-10 22:33:31 C 22 35 57.22 +19 09 59.8 c 046
2000-08-10 22:35:16 C 22 35 57.23 +19 09 58.1 c 046
2000-08-10 22:36:40 C 22 35 57.07 +19 09 58.2 c 046
2000-08-10 22:38:04 C 22 35 57.04 +19 09 55.8 c 046
2000-08-10 22:39:32 C 22 35 56.95 +19 09 55.2 c 046
2000-08-11 02:03:39 C 22 35 45.65 +19 07 18.4 118
2000-08-11 02:12:40 C 22 35 45.12 +19 07 11.1 118
2000-08-11 02:17:07 C 22 35 44.87 +19 07 07.7 118
2000-08-11 04:23:26 C 22 35 38.68 +19 05 30.9 734
2000-08-11 04:34:03 C 22 35 38.19 +19 05 23.5 734
2000-08-11 04:39:27 C 22 35 37.67 +19 05 16.4 734
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)