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
2010-09-11 22:48:23 C 21 18 07.25 +03 39 06.3 u 160
2010-09-17 21:54:38 C 21 07 32.00 -00 55 00.4 c J32
2010-09-17 23:10:08 C 21 07 26.55 -00 57 27.3 c J32
2010-10-02 03:43:27 C 20 47 55.57 -11 44 24.9 18.5 c 704
2010-10-02 04:03:02 C 20 47 54.69 -11 45 01.3 18.7 c 704
2010-10-02 04:22:12 C 20 47 53.70 -11 45 35.8 18.8 c 704
2010-10-02 04:42:04 C 20 47 52.79 -11 46 10.3 18.9 c 704
2010-10-02 05:01:14 C 20 47 51.98 -11 46 44.9 18.6 c 704
2010-10-08 02:08:03 C 20 42 44.54 -15 51 12.0 17.5 c 704
2010-10-08 02:27:48 C 20 42 43.91 -15 51 44.5 17.9 c 704
2010-10-08 02:47:46 C 20 42 43.27 -15 52 18.4 18.0 c 704
2010-10-08 03:07:29 C 20 42 42.63 -15 52 50.6 17.7 c 704
2010-10-08 03:27:10 C 20 42 41.99 -15 53 23.1 18.2 c 704
2010-10-09 02:00:07 C 20 42 03.62 -16 30 33.6 17.9 c 704
2010-10-09 02:20:05 C 20 42 03.04 -16 31 06.6 17.9 c 704
2010-10-09 02:40:02 C 20 42 02.46 -16 31 39.3 18.3 c 704
2010-10-09 02:59:58 C 20 42 01.88 -16 32 12.0 18.2 c 704
2010-10-09 03:19:59 C 20 42 01.27 -16 32 44.7 18.1 c 704
2010-10-10 01:59:34 C 20 41 25.78 -17 09 33.7 18.1 c 704
2010-10-10 02:19:38 C 20 41 25.22 -17 10 06.2 18.0 c 704
2010-10-10 02:39:33 C 20 41 24.63 -17 10 37.2 18.7 c 704
2010-10-10 02:59:26 C 20 41 24.13 -17 11 10.1 18.1 c 704
2010-10-10 03:19:19 C 20 41 23.59 -17 11 41.9 18.4 c 704
2010-10-11 01:59:31 C 20 40 51.16 -17 47 56.5 18.5 c 704
2010-10-11 02:19:20 C 20 40 50.65 -17 48 28.4 18.2 c 704
2010-10-11 02:39:08 C 20 40 50.14 -17 48 59.7 18.5 c 704
2010-10-11 03:00:58 C 20 40 49.60 -17 49 34.7 18.3 c 704
2010-10-11 03:04:37 C 20 40 49.54 -17 49 39.3 r 703
2010-10-11 03:11:07 C 20 40 49.40 -17 49 50.0 r 703
2010-10-11 03:17:43 C 20 40 49.18 -17 50 00.7 r 703
2010-10-11 03:20:45 C 20 40 49.12 -17 50 05.8 18.5 c 704
2010-10-11 03:24:18 C 20 40 48.82 -17 50 09.7 r 703
2010-10-24 07:52:06 S 20 38 15.10 -25 19 27.0 L C51
2010-10-24 11:02:37 S 20 38 16.20 -25 23 25.0 L C51
2010-10-24 15:48:18 S 20 38 18.10 -25 29 28.0 L C51
2010-11-04 01:43:57 C 20 42 33.01 -30 16 23.0 r 703
2010-11-04 01:51:47 C 20 42 33.19 -30 16 30.5 r 703
2010-11-04 01:59:34 C 20 42 33.40 -30 16 38.3 r 703
2010-11-04 02:07:25 C 20 42 33.55 -30 16 47.4 r 703
2010-11-06 10:28:03 C 20 44 12.01 -31 14 36.3 r E12
2011-03-10 18:54:52 C 04 04 03.13 +08 32 16.9 u 160
2011-03-10 18:57:01 C 04 04 04.55 +08 33 02.4 u 160
2011-03-10 18:59:23 C 04 04 06.08 +08 33 52.1 u 160
2011-03-11 01:05:00 C 04 08 10.03 +10 42 35.0 r H49
2011-03-11 01:05:40 C 04 08 10.47 +10 42 49.7 r H49
2011-03-11 01:06:03 C 04 08 10.72 +10 42 57.6 r H49
2011-03-11 01:06:24 C 04 08 10.93 +10 43 04.3 r H49
2011-03-11 01:09:00 C 04 08 12.64 +10 43 59.5 r H49
2011-03-11 01:09:22 C 04 08 12.92 +10 44 07.1 r H49
2011-03-11 01:09:45 C 04 08 13.11 +10 44 15.1 r H49
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)