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
2021-06-12 05:06:31 C 11 49 24.76 +46 52 06.1 V 703
2021-06-12 05:14:58 C 11 49 25.68 +46 52 02.3 V 703
2021-06-19 07:11:00 C 12 05 20.155 +45 16 16.02 U F51
2021-06-19 07:53:16 C 12 05 23.943 +45 15 51.38 U F51
2021-06-19 08:13:09 C 12 05 25.717 +45 15 39.74 U F51
2021-07-25 07:51:04 C 13 16 58.968 +36 41 46.68 U F51
2021-07-25 08:06:23 C 13 17 00.170 +36 41 37.61 U F51
2021-07-25 08:21:40 C 13 17 01.337 +36 41 28.29 U F51
2022-08-20 20:03:59 C 18 43 25.98 +30 24 23.7 X B88
2022-08-20 20:38:09 C 18 43 25.00 +30 23 57.9 X B88
2022-08-20 21:13:44 C 18 43 23.93 +30 23 30.6 X B88
2022-08-23 19:56:47 C 18 41 32.32 +29 28 34.2 X B88
2022-08-23 20:34:29 C 18 41 31.36 +29 28 04.0 X B88
2022-08-23 21:12:07 C 18 41 30.46 +29 27 34.4 X B88
2024-04-21 10:56:52 C 18 27 19.238 +41 39 31.54 V G96
2024-04-21 11:03:06 C 18 27 19.145 +41 39 35.86 V G96
2024-04-21 11:09:19 C 18 27 19.055 +41 39 40.64 V G96
2024-04-21 11:15:32 C 18 27 18.907 +41 39 44.64 V G96
2024-05-07 09:26:51 C 18 18 01.789 +45 46 33.56 V G96
2024-05-07 09:35:42 C 18 18 01.462 +45 46 38.64 V G96
2024-05-07 09:44:30 C 18 18 01.145 +45 46 43.57 V G96
2024-05-07 09:53:19 C 18 18 00.788 +45 46 48.43 V G96
2024-05-11 09:29:51 C 18 14 09.784 +46 37 25.72 V G96
2024-05-11 09:36:38 C 18 14 09.442 +46 37 29.78 V G96
2024-05-11 09:43:24 C 18 14 09.125 +46 37 32.45 V G96
2024-05-11 09:50:19 C 18 14 08.833 +46 37 35.87 V G96
2024-05-22 07:55:15 C 18 00 49.842 +48 25 53.54 V G96
2024-05-22 08:02:14 C 18 00 49.428 +48 25 55.49 V G96
2024-05-22 08:09:13 C 18 00 49.018 +48 25 57.40 V G96
2024-05-22 08:16:14 C 18 00 48.546 +48 26 00.10 V G96
2024-05-27 08:42:58 C 17 53 34.534 +48 58 50.81 V G96
2024-05-27 08:50:29 C 17 53 34.127 +48 58 51.89 V G96
2024-05-27 09:05:34 C 17 53 33.169 +48 58 55.42 V G96
2024-06-02 10:47:30 C 17 44 10.274 +49 22 58.24 X F52
2024-06-02 11:05:24 C 17 44 09.072 +49 23 00.22 X F52
2024-06-02 11:23:19 C 17 44 07.853 +49 23 02.07 X F52
2024-06-02 11:41:12 C 17 44 06.645 +49 23 03.84 X F52
2024-06-08 10:29:06 C 17 34 33.467 +49 29 09.03 X F52
2024-06-08 10:47:56 C 17 34 32.178 +49 29 08.72 X F52
2024-06-08 11:06:44 C 17 34 30.871 +49 29 08.33 X F52
2024-06-08 11:25:33 C 17 34 29.582 +49 29 08.02 X F52
2024-06-11 07:45:03 C 17 29 54.294 +49 25 49.73 V G96
2024-06-11 07:52:34 C 17 29 53.768 +49 25 49.08 V G96
2024-06-11 08:00:06 C 17 29 53.221 +49 25 48.50 V G96
2024-06-11 08:07:38 C 17 29 52.732 +49 25 47.78 V G96
2024-10-26 02:21:02 C 17 37 43.360 +17 25 09.26 V V00
2024-10-26 02:29:14 C 17 37 43.788 +17 25 05.95 V V00
2024-10-26 02:37:26 C 17 37 44.173 +17 25 01.52 V V00
2024-10-26 02:45:38 C 17 37 44.641 +17 24 58.25 V V00
2025-05-26 13:14:05 C 22 08 15.439 +22 28 59.29 X F52
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)