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
2011-04-09 21:47:21 C 10 04 03.44 +64 01 25.0 c A24
2011-04-09 22:09:28 C 10 04 07.48 +64 01 17.1 c A24
2011-04-09 22:10:31 C 10 04 07.70 +64 01 17.0 c A24
2011-04-10 04:10:10 C 10 05 15.54 +63 59 20.9 u H45
2011-04-10 04:12:50 C 10 05 15.99 +63 59 20.1 u H45
2011-04-10 04:14:38 C 10 05 16.32 +63 59 19.2 u H45
2011-04-10 04:16:33 C 10 05 16.68 +63 59 18.6 u H45
2011-04-10 04:18:46 C 10 05 17.07 +63 59 17.9 u H45
2011-04-10 19:37:05 C 10 08 06.61 +63 54 01.8 a 233
2011-04-10 19:41:04 C 10 08 07.27 +63 54 00.3 a 233
2011-04-10 19:44:04 C 10 08 07.79 +63 53 59.2 a 233
2011-04-10 21:15:15 C 10 08 23.69 +63 53 27.4 c A24
2011-04-10 21:16:18 C 10 08 23.91 +63 53 26.9 c A24
2011-04-10 21:38:40 C 10 08 27.74 +63 53 18.8 c A24
2011-04-10 22:02:04 C 10 08 31.79 +63 53 10.0 c A24
2011-04-10 22:24:27 C 10 08 35.68 +63 53 01.9 c A24
2011-04-10 22:25:29 C 10 08 35.86 +63 53 01.4 c A24
2011-04-15 04:27:46 C 10 25 16.27 +63 13 05.1 17.1 c 704
2011-04-15 04:45:05 C 10 25 18.70 +63 12 57.5 17.4 c 704
2011-04-15 05:01:58 C 10 25 21.06 +63 12 50.0 17.5 c 704
2011-04-15 05:18:43 C 10 25 23.55 +63 12 42.1 17.6 c 704
2011-04-15 05:35:34 C 10 25 25.80 +63 12 35.4 17.7 c 704
2011-04-16 04:15:23 C 10 28 44.45 +63 02 46.5 16.9 c 704
2011-04-16 04:32:29 C 10 28 46.77 +63 02 38.8 17.4 c 704
2011-04-16 04:49:37 C 10 28 49.08 +63 02 30.5 17.6 c 704
2011-04-16 05:07:01 C 10 28 51.46 +63 02 23.7 17.4 c 704
2011-04-16 05:24:16 C 10 28 53.86 +63 02 15.4 17.4 c 704
2011-04-17 21:57:04 C 10 34 29.84 +62 43 57.8 u 160
2011-04-17 21:59:26 C 10 34 30.13 +62 43 56.7 u 160
2011-04-17 22:01:47 C 10 34 30.44 +62 43 55.6 u 160
2011-04-18 21:26:24 C 10 37 35.41 +62 33 03.2 t 160
2011-04-18 21:28:46 C 10 37 35.64 +62 33 03.1 t 160
2011-04-18 21:31:07 C 10 37 36.01 +62 33 00.4 t 160
2011-04-19 21:48:38 C 10 40 41.10 +62 21 27.6 u 160
2011-04-19 21:50:36 C 10 40 41.35 +62 21 26.6 u 160
2011-04-19 21:54:08 C 10 40 41.75 +62 21 24.6 u 160
2011-04-20 22:01:46 C 10 43 39.55 +62 09 43.4 u 160
2011-04-20 22:04:03 C 10 43 39.83 +62 09 42.1 u 160
2011-04-20 22:06:12 C 10 43 40.09 +62 09 40.9 u 160
2011-04-21 20:43:19 C 10 46 22.23 +61 58 31.9 c A24
2011-04-21 20:44:22 C 10 46 22.38 +61 58 31.3 c A24
2011-04-21 21:06:48 C 10 46 24.90 +61 58 20.2 c A24
2011-04-21 21:30:16 C 10 46 27.53 +61 58 08.2 c A24
2011-04-21 21:52:42 C 10 46 30.08 +61 57 56.9 c A24
2011-04-21 21:53:45 C 10 46 30.14 +61 57 56.6 c A24
2011-04-21 21:59:32 C 10 46 30.74 +61 57 53.3 u 160
2011-04-21 22:01:52 C 10 46 30.98 +61 57 52.1 u 160
2011-04-21 22:04:11 C 10 46 31.24 +61 57 51.0 u 160
2011-04-29 06:12:40 C 11 05 15.68 +60 25 21.4 u H45
2011-04-29 06:41:31 C 11 05 18.40 +60 25 04.8 u H45
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)