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
2000-09-26 03:15:09 C 21 09 20.18 -12 38 43.3 c 699
2000-09-26 03:48:28 C 21 09 17.77 -12 39 54.9 c 699
2000-09-26 04:21:43 C 21 09 15.29 -12 41 08.4 c 699
2000-09-27 00:51:40 C 21 07 50.36 -13 25 26.3 i 808
2000-09-27 01:28:05 C 21 07 48.04 -13 26 57.9 i 739
2000-09-27 01:35:34 C 21 07 47.44 -13 27 14.7 i 739
2000-09-27 01:39:55 C 21 07 47.22 -13 27 23.8 i 739
2000-09-27 02:09:29 C 21 07 44.84 -13 28 15.2 i 808
2000-10-04 10:49:29 C 20 57 04.67 -19 33 49.5 360
2000-10-04 10:52:59 C 20 57 04.43 -19 33 56.1 360
2000-10-04 10:57:44 C 20 57 04.21 -19 34 06.1 360
2000-10-18 02:33:58 C 20 45 21.17 -29 04 25.1 c 699
2000-10-18 03:01:00 C 20 45 20.58 -29 05 07.9 c 699
2000-10-18 03:27:50 C 20 45 19.88 -29 05 48.1 c 699
2000-10-18 03:54:43 C 20 45 19.43 -29 06 28.6 c 699
2000-10-19 23:51:30 C 20 44 34.40 -30 11 57.0 i 808
2000-10-20 00:17:09 C 20 44 33.96 -30 12 34.6 i 808
2000-10-28 08:48:17 C 20 43 30.74 -34 43 49.6 c 467
2000-10-28 08:54:38 C 20 43 30.76 -34 43 57.8 c 467
2000-10-28 09:00:57 C 20 43 30.80 -34 44 05.5 c 467
2000-10-30 01:49:30 C 20 43 45.79 -35 34 24.7 z 711
2000-10-30 01:57:24 C 20 43 45.81 -35 34 34.7 z 711
2000-10-30 02:05:02 C 20 43 45.89 -35 34 44.5 z 711
2000-11-26 09:46:51 C 21 05 29.44 -46 31 18.1 m 428
2001-02-22 17:15:07 C 19 53 43.125 -62 16 20.51 422
2001-02-22 17:17:56 C 19 53 41.265 -62 16 07.93 422
2001-02-22 17:19:14 C 19 53 40.425 -62 16 01.86 422
2001-02-23 17:34:27 C 19 37 11.804 -60 03 07.92 422
2001-02-23 17:35:25 C 19 37 11.103 -60 03 01.93 422
2001-02-23 17:36:17 C 19 37 10.504 -60 02 56.47 422
2001-02-26 09:17:11 C 18 48 37.70 -49 49 54.7 808
2001-02-26 09:19:11 C 18 48 36.05 -49 49 26.5 808
2001-02-26 09:25:22 C 18 48 30.90 -49 48 04.5 808
2001-02-26 09:27:12 C 18 48 29.26 -49 47 37.5 808
2001-02-28 08:49:44 C 18 08 41.99 -34 17 13.5 808
2001-02-28 08:50:49 C 18 08 41.01 -34 16 45.2 808
2001-02-28 08:53:05 C 18 08 39.05 -34 15 46.7 808
2001-02-28 08:55:05 C 18 08 37.29 -34 14 54.4 808
2001-02-28 08:57:04 C 18 08 35.52 -34 14 02.1 808
2001-02-28 08:59:04 C 18 08 33.76 -34 13 10.0 808
2001-02-28 09:01:04 C 18 08 32.09 -34 12 17.5 808
2001-02-28 09:03:04 C 18 08 30.28 -34 11 28.6 808
2001-02-28 09:07:05 C 18 08 26.75 -34 09 43.8 808
2001-02-28 09:09:05 C 18 08 24.97 -34 08 51.3 808
2001-02-28 09:15:45 C 18 08 19.02 -34 05 54.1 808
2001-02-28 09:17:45 C 18 08 17.30 -34 05 01.8 808
2001-02-28 09:19:45 C 18 08 15.51 -34 04 12.0 808
2001-02-28 09:21:44 C 18 08 13.74 -34 03 19.2 808
2001-02-28 09:23:44 C 18 08 12.01 -34 02 27.7 808
2001-02-28 09:27:44 C 18 08 08.48 -34 00 42.8 808
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)