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
2006-03-10 22:24:25 C 09 42 15.10 +79 00 38.5 c J65
2006-03-10 22:24:33 C 09 42 15.30 +79 00 38.2 c J65
2006-03-11 18:33:29 C 10 10 57.49 +77 40 23.4 o 084
2006-03-11 18:33:40 C 10 10 57.69 +77 40 22.6 o 084
2006-03-11 18:33:51 C 10 10 57.87 +77 40 22.0 o 084
2006-03-11 18:34:01 C 10 10 58.06 +77 40 21.5 o 084
2006-03-11 18:34:12 C 10 10 58.29 +77 40 20.8 o 084
2006-03-11 18:34:24 C 10 10 58.43 +77 40 20.0 o 084
2006-03-11 23:02:09 C 10 15 19.98 +77 24 32.2 o 084
2006-03-11 23:02:41 C 10 15 20.52 +77 24 30.0 o 084
2006-03-12 01:52:01 C 10 18 17.42 +77 15 07.0 o H89
2006-03-12 03:19:30 C 10 19 30.53 +77 10 19.0 o H89
2006-03-12 19:01:56 C 10 31 27.41 +76 21 24.1 o 084
2006-03-12 19:02:07 C 10 31 27.58 +76 21 23.3 o 084
2006-03-12 19:02:18 C 10 31 27.66 +76 21 22.9 o 084
2006-03-12 19:02:40 C 10 31 27.78 +76 21 22.5 o 084
2006-03-12 19:02:51 C 10 31 28.05 +76 21 22.0 o 084
2006-03-12 21:40:44 C 10 33 05.96 +76 14 13.2 o A13
2006-03-12 21:42:50 C 10 33 07.13 +76 14 07.5 o A13
2006-03-12 21:44:17 C 10 33 07.98 +76 14 03.4 o A13
2006-03-12 21:53:34 C 10 33 13.06 +76 13 38.3 o A13
2006-03-12 21:56:17 C 10 33 14.55 +76 13 30.8 o A13
2006-03-12 22:17:36 C 10 33 21.92 +76 12 16.0 o 084
2006-03-12 22:17:47 C 10 33 21.93 +76 12 16.1 o 084
2006-03-12 22:17:57 C 10 33 22.13 +76 12 15.3 o 084
2006-03-12 22:18:19 C 10 33 22.32 +76 12 14.3 o 084
2006-03-12 22:18:30 C 10 33 22.37 +76 12 13.7 o 084
2006-03-13 00:13:29 C 10 34 29.14 +76 07 01.5 o A32
2006-03-13 00:18:30 C 10 34 31.82 +76 06 47.3 o A32
2006-03-13 00:23:30 C 10 34 34.56 +76 06 33.3 o A32
2006-03-13 00:29:51 C 10 34 37.99 +76 06 15.6 o A32
2006-03-13 00:36:23 C 10 34 41.54 +76 05 57.2 o A32
2006-03-13 19:25:58 C 10 44 14.86 +75 18 54.6 o 084
2006-03-13 19:26:10 C 10 44 15.10 +75 18 53.5 o 084
2006-03-13 19:26:21 C 10 44 15.10 +75 18 53.2 o 084
2006-03-13 19:26:32 C 10 44 15.18 +75 18 53.0 o 084
2006-03-13 19:26:55 C 10 44 15.38 +75 18 52.1 o 084
2006-03-14 20:01:37 C 10 53 06.56 +74 28 02.6 c A65
2006-03-14 20:23:21 C 10 53 12.54 +74 27 24.6 c A65
2006-03-14 20:34:49 C 10 53 15.56 +74 27 04.7 c A65
2006-03-14 22:01:51 C 10 53 36.92 +74 24 25.9 c 127
2006-03-14 22:24:04 C 10 53 42.57 +74 23 45.4 c 127
2006-03-14 22:27:14 C 10 53 43.40 +74 23 39.6 c 127
2006-03-14 22:30:26 C 10 53 44.20 +74 23 33.9 c 127
2006-03-14 22:33:31 C 10 53 44.96 +74 23 28.2 c 127
2006-03-15 10:40:16 C 10 57 08.59 +74 02 08.1 m 379
2006-03-15 10:41:53 C 10 57 08.94 +74 02 05.7 m 379
2006-03-15 10:46:45 C 10 57 10.04 +74 01 58.4 m 379
2006-03-15 10:48:24 C 10 57 10.46 +74 01 56.1 m 379
2006-03-15 10:50:00 C 10 57 10.81 +74 01 53.6 m 379
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)