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
2020-11-08 05:47:02 C 20 40 23.80 -24 24 03.1 V T05
2020-11-08 06:04:51 C 20 40 24.55 -24 24 18.5 V T05
2020-11-10 05:38:46 C 20 42 25.81 -25 05 56.0 V T08
2020-11-10 05:43:25 C 20 42 25.98 -25 06 00.8 V T08
2020-11-10 05:51:23 C 20 42 26.32 -25 06 06.6 V T08
2020-11-10 06:06:00 C 20 42 26.93 -25 06 19.3 V T08
2020-11-13 13:31:40 C 20 46 08.60 -26 13 00.3 N56
2020-11-13 13:34:02 C 20 46 08.63 -26 13 02.2 N56
2020-11-13 14:10:00 C 20 46 10.44 -26 13 29.9 N56
2020-11-13 14:12:23 C 20 46 10.58 -26 13 32.8 N56
2020-11-13 14:41:46 C 20 46 11.93 -26 13 59.0 N56
2020-11-13 14:44:13 C 20 46 12.07 -26 13 58.3 N56
2020-11-16 05:26:44 C 20 49 23.86 -27 04 10.1 V T05
2020-11-16 05:30:43 C 20 49 24.09 -27 04 13.6 V T05
2020-11-16 05:39:56 C 20 49 24.54 -27 04 20.9 V T05
2020-11-16 05:57:07 C 20 49 25.39 -27 04 33.9 V T05
2020-12-02 04:45:21 C 21 13 50.44 -31 32 50.0 V T05
2020-12-02 04:58:31 C 21 13 51.49 -31 32 58.6 V T05
2020-12-02 05:03:08 C 21 13 51.79 -31 33 01.0 V T05
2020-12-02 05:22:24 C 21 13 53.19 -31 33 13.0 V T05
2020-12-08 04:45:15 C 21 25 05.48 -32 59 48.6 V T08
2020-12-08 04:49:53 C 21 25 05.86 -32 59 50.9 V T08
2020-12-08 04:57:51 C 21 25 06.47 -32 59 55.5 V T08
2020-12-08 05:17:04 C 21 25 07.99 -33 00 06.5 V T08
2021-01-09 19:05:53 C 22 45 56.31 -39 15 07.6 o K95
2021-01-09 19:40:36 C 22 46 00.63 -39 15 20.4 o K95
2021-03-17 08:57:17 C 04 08 28.49 -01 10 59.6 q E89
2021-03-17 09:06:55 C 04 08 31.68 -01 09 52.7 q E89
2021-03-19 02:38:03 C 04 22 37.97 +03 41 55.0 V 703
2021-03-19 02:45:51 C 04 22 40.60 +03 42 50.6 V 703
2021-03-19 02:53:39 C 04 22 43.26 +03 43 46.3 V 703
2021-03-19 03:01:26 C 04 22 45.93 +03 44 41.8 V 703
2021-03-21 08:49:36 C 04 41 33.19 +10 11 47.9 q E89
2021-03-21 09:06:37 C 04 41 39.15 +10 13 49.2 q E89
2021-03-23 20:10:57 C 05 02 50.10 +17 10 04.1 V L74
2021-03-23 20:18:11 C 05 02 52.67 +17 10 53.1 V L74
2021-03-23 20:25:18 C 05 02 55.30 +17 11 42.8 V L74
2021-03-24 07:12:55 C 05 06 50.27 +18 25 34.4 V T08
2021-03-24 07:18:14 C 05 06 52.17 +18 26 10.2 V T08
2021-03-24 07:24:12 C 05 06 54.33 +18 26 50.3 V T08
2021-03-24 07:27:31 C 05 06 55.52 +18 27 12.9 V T08
2021-03-24 07:42:08 C 05 07 00.80 +18 28 51.5 V T08
2021-03-25 19:02:53 C 05 19 56.34 +22 22 13.9 V L63
2021-03-25 19:18:47 C 05 20 02.13 +22 23 55.5 V L63
2021-03-25 19:29:30 C 05 20 06.01 +22 25 03.6 V L63
2021-03-28 19:18:10 C 05 46 32.74 +29 33 27.2 q G07
2021-03-28 19:43:14 C 05 46 41.84 +29 35 44.3 q G07
2021-03-28 20:15:31 C 05 46 53.68 +29 38 39.9 q G07
2021-03-29 19:35:11 C 05 55 29.29 +31 42 27.8 V K87
2021-03-29 19:36:14 C 05 55 29.62 +31 42 33.0 V K87
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)