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
2011-03-11 01:10:06 C 04 08 13.37 +10 44 22.9 r H49
2011-03-17 16:25:00 C 06 06 06.63 +51 03 31.1 r 168
2011-03-17 17:52:40 C 06 07 12.00 +51 15 07.8 r 168
2011-03-17 18:59:25 C 06 08 01.94 +51 23 51.7 r 168
2011-03-17 20:44:15 C 06 09 20.77 +51 37 21.6 r 168
2011-03-17 21:55:41 C 06 10 14.75 +51 46 26.8 r 168
2011-03-22 19:54:59 C 07 31 37.92 +60 58 40.6 u C38
2011-03-22 19:59:59 C 07 31 40.90 +60 58 53.4 u C38
2011-03-22 20:05:00 C 07 31 43.86 +60 59 06.0 u C38
2011-03-22 20:10:00 C 07 31 46.82 +60 59 18.4 u C38
2011-03-22 20:15:00 C 07 31 49.80 +60 59 31.1 u C38
2011-03-22 20:19:59 C 07 31 52.80 +60 59 43.4 u C38
2011-03-22 20:44:57 C 07 32 07.57 +61 00 45.7 u C38
2011-03-22 20:49:57 C 07 32 10.57 +61 00 58.2 u C38
2011-03-22 20:54:57 C 07 32 13.52 +61 01 10.6 u C38
2011-03-22 20:59:58 C 07 32 16.50 +61 01 22.8 u C38
2011-03-22 21:04:57 C 07 32 19.46 +61 01 35.2 u C38
2011-03-22 21:09:57 C 07 32 22.48 +61 01 47.5 u C38
2011-03-22 21:14:16 C 07 32 24.81 +61 01 58.1 u 160
2011-03-22 21:15:31 C 07 32 25.55 +61 02 01.2 u 160
2011-03-22 21:16:34 C 07 32 26.18 +61 02 03.7 u 160
2011-03-22 21:42:03 C 07 32 41.53 +61 03 06.2 u C38
2011-03-22 21:52:04 C 07 32 47.47 +61 03 30.5 u C38
2011-03-22 22:02:03 C 07 32 53.43 +61 03 54.8 u C38
2011-03-23 21:30:22 C 07 46 41.23 +61 56 13.4 u 160
2011-03-23 21:32:01 C 07 46 42.16 +61 56 16.6 u 160
2011-03-23 21:33:33 C 07 46 42.99 +61 56 19.6 u 160
2011-03-24 21:08:13 C 07 59 43.18 +62 37 56.5 u 160
2011-03-24 21:09:54 C 07 59 44.06 +62 37 59.0 u 160
2011-03-24 21:11:34 C 07 59 44.92 +62 38 01.6 u 160
2011-03-24 22:18:36 C 08 00 20.91 +62 39 40.9 o J16
2011-03-24 22:29:03 C 08 00 26.37 +62 39 56.9 o J16
2011-03-25 21:22:15 C 08 12 12.12 +63 11 26.7 c A24
2011-03-25 21:33:45 C 08 12 17.71 +63 11 40.1 c A24
2011-03-25 21:40:52 C 08 12 21.18 +63 11 48.4 c A24
2011-03-25 22:00:02 C 08 12 30.49 +63 12 10.6 c A24
2011-03-25 22:00:34 C 08 12 30.75 +63 12 11.2 c A24
2011-03-25 22:19:11 C 08 12 39.79 +63 12 32.9 c A24
2011-03-30 21:27:33 C 09 02 25.16 +64 29 19.1 c A24
2011-03-30 21:28:06 C 09 02 25.32 +64 29 19.5 c A24
2011-03-30 21:28:38 C 09 02 25.54 +64 29 19.5 c A24
2011-03-30 21:29:11 C 09 02 25.70 +64 29 19.5 c A24
2011-03-31 19:24:11 C 09 09 51.16 +64 33 29.9 u J28
2011-03-31 19:31:02 C 09 09 53.33 +64 33 31.1 u J28
2011-03-31 19:37:52 C 09 09 55.46 +64 33 32.0 u J28
2011-03-31 21:23:23 C 09 10 28.09 +64 33 44.2 c A24
2011-03-31 21:35:02 C 09 10 31.80 +64 33 45.4 c A24
2011-03-31 21:42:54 C 09 10 34.29 +64 33 46.1 c A24
2011-03-31 22:02:58 C 09 10 40.67 +64 33 47.9 c A24
2011-03-31 22:10:50 C 09 10 43.14 +64 33 48.6 c A24
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)