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
2005-09-13 20:56:19 C 21 24 58.14 +00 03 27.7 c A53
2005-09-13 21:04:36 C 21 24 57.41 +00 03 10.7 c A53
2005-09-19 19:15:34 C 21 13 48.37 -04 55 03.6 r 240
2005-09-19 19:17:01 C 21 13 48.26 -04 55 06.5 r 240
2005-09-19 19:18:28 C 21 13 48.15 -04 55 09.4 r 240
2005-09-19 19:21:23 C 21 13 47.94 -04 55 15.6 r 240
2005-09-19 19:25:27 C 21 13 47.42 -04 55 25.7 r 084
2005-09-19 19:26:28 C 21 13 47.56 -04 55 26.5 r 240
2005-09-19 19:27:12 C 21 13 47.51 -04 55 27.9 r 240
2005-09-19 19:34:27 C 21 13 46.94 -04 55 43.4 r 240
2005-09-19 19:36:39 C 21 13 46.78 -04 55 48.2 r 240
2005-09-21 01:15:17 C 21 11 35.90 -05 58 18.7 r H51
2005-09-21 01:38:02 C 21 11 34.15 -05 59 07.5 r H51
2005-09-21 02:03:02 C 21 11 32.24 -06 00 02.5 r H51
2005-09-21 19:18:59 C 21 10 17.61 -06 36 23.6 r A13
2005-09-21 19:20:06 C 21 10 17.55 -06 36 26.0 r A13
2005-09-21 19:21:13 C 21 10 17.47 -06 36 28.2 r A13
2005-09-22 20:15:43 C 21 08 31.68 -07 28 47.4 r 084
2005-09-22 20:18:50 C 21 08 31.46 -07 28 54.1 r 084
2005-09-23 03:23:37 C 21 08 02.21 -07 43 41.2 o 699
2005-09-23 03:44:48 C 21 08 00.69 -07 44 25.6 o 699
2005-09-23 04:06:01 C 21 07 59.16 -07 45 09.6 o 699
2005-09-23 04:27:16 C 21 07 57.66 -07 45 54.1 o 699
2005-09-23 12:28:56 C 21 07 24.20 -08 02 29.9 r E19
2005-09-23 12:33:01 C 21 07 23.96 -08 02 39.1 r E19
2005-09-23 12:37:04 C 21 07 23.67 -08 02 47.0 r E19
2005-09-24 19:53:30 C 21 05 17.38 -09 08 11.0 r 084
2005-09-25 19:02:21 C 21 03 46.80 -09 56 03.7 r 084
2005-10-01 02:45:24 C 20 56 15.32 -14 13 03.8 o 699
2005-10-01 03:19:46 C 20 56 13.42 -14 14 10.9 o 699
2005-10-01 03:54:08 C 20 56 11.51 -14 15 17.9 o 699
2005-10-01 04:28:33 C 20 56 09.59 -14 16 25.0 o 699
2005-10-04 02:18:10 C 20 52 40.99 -16 30 20.2 o 699
2005-10-04 02:44:27 C 20 52 39.66 -16 31 09.6 o 699
2005-10-04 03:10:43 C 20 52 38.41 -16 31 58.7 o 699
2005-10-05 02:19:13 C 20 51 35.49 -17 15 09.2 17.6 c 704
2005-10-05 02:34:53 C 20 51 34.77 -17 15 38.8 17.8 c 704
2005-10-05 02:50:33 C 20 51 34.03 -17 16 07.5 18.2 c 704
2005-10-05 03:06:09 C 20 51 33.30 -17 16 36.4 18.0 c 704
2005-10-05 03:21:54 C 20 51 32.55 -17 17 05.5 18.0 c 704
2006-03-07 10:49:51 C 02 27 11.50 +67 07 24.4 m 300
2006-03-07 10:51:25 C 02 27 17.34 +67 08 44.6 m 300
2006-03-07 10:52:24 C 02 27 20.76 +67 09 35.1 m 300
2006-03-07 10:53:22 C 02 27 24.42 +67 10 25.1 m 300
2006-03-07 10:54:21 C 02 27 27.59 +67 11 14.4 m 300
2006-03-07 10:55:30 C 02 27 31.99 +67 12 12.8 m 300
2006-03-07 10:56:29 C 02 27 35.07 +67 13 03.7 m 300
2006-03-07 10:57:28 C 02 27 39.03 +67 13 53.3 m 300
2006-03-07 11:18:03 C 02 28 53.68 +67 31 08.8 m 300
2006-03-07 11:19:36 C 02 28 59.36 +67 32 26.0 m 300
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)