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
2011-04-29 06:46:06 C 11 05 18.87 +60 25 02.2 u H45
2011-04-29 06:52:04 C 11 05 19.44 +60 24 58.3 u H45
2011-04-29 07:00:11 C 11 05 20.17 +60 24 53.8 u H45
2011-05-01 20:03:30 C 11 11 09.17 +59 50 58.7 c A24
2011-05-01 20:27:55 C 11 11 11.34 +59 50 45.0 c A24
2011-05-01 21:02:55 C 11 11 14.48 +59 50 24.5 c A24
2011-05-01 21:42:12 C 11 11 17.96 +59 50 02.7 c A24
2011-05-05 20:11:48 C 11 19 46.71 +58 55 52.7 c A24
2011-05-05 20:12:50 C 11 19 46.75 +58 55 53.6 c A24
2011-05-05 20:13:52 C 11 19 46.77 +58 55 52.6 c A24
2011-05-05 21:04:00 C 11 19 50.99 +58 55 24.1 c A24
2011-05-05 21:05:02 C 11 19 51.08 +58 55 23.1 c A24
2011-05-05 21:06:04 C 11 19 51.17 +58 55 22.0 c A24
2011-05-07 20:28:21 C 11 23 54.95 +58 27 36.9 c A24
2011-05-07 20:45:23 C 11 23 56.33 +58 27 26.8 c A24
2011-05-07 20:55:48 C 11 23 57.19 +58 27 20.3 c A24
2011-05-07 21:10:03 C 11 23 58.35 +58 27 11.7 c A24
2011-05-07 21:20:28 C 11 23 59.19 +58 27 05.3 c A24
2011-05-07 21:37:30 C 11 24 00.58 +58 26 55.8 c A24
2011-05-08 20:45:37 C 11 25 57.42 +58 13 14.1 c A24
2011-05-08 20:46:39 C 11 25 57.54 +58 13 13.5 c A24
2011-05-14 04:57:00 C 11 36 20.78 +56 55 58.0 19.1 c 704
2011-05-14 05:11:01 C 11 36 21.71 +56 55 49.2 19.6 c 704
2011-05-14 05:24:43 C 11 36 22.75 +56 55 39.9 19.1 c 704
2011-05-14 05:38:37 C 11 36 23.79 +56 55 31.4 18.8 c 704
2011-05-19 20:36:02 C 11 46 46.79 +55 31 54.9 c A24
2011-05-19 21:00:52 C 11 46 48.61 +55 31 39.6 c A24
2011-05-19 21:25:44 C 11 46 50.42 +55 31 24.3 c A24
2011-05-20 20:47:21 C 11 48 35.59 +55 16 44.7 c A24
2011-05-20 21:12:35 C 11 48 37.34 +55 16 28.0 c A24
2011-05-20 21:37:53 C 11 48 39.26 +55 16 11.4 c A24
2011-05-25 21:26:26 C 11 57 27.52 +54 00 03.5 u C01
2011-05-25 21:28:49 C 11 57 27.68 +54 00 02.1 u C01
2011-05-25 23:28:22 C 11 57 36.20 +53 58 43.8 u C01
2011-05-25 23:30:46 C 11 57 36.37 +53 58 42.0 u C01
2014-05-16 13:29:47 C 18 22 19.033 +46 12 50.22 L F51
2014-05-16 13:45:52 C 18 22 18.317 +46 12 57.46 L F51
2014-05-16 14:01:59 C 18 22 17.561 +46 13 04.98 L F51
2014-05-16 14:18:10 C 18 22 16.802 +46 13 12.05 L F51
2015-06-30 11:53:56 C 22 33 01.692 +24 34 49.17 L F51
2015-06-30 12:30:48 C 22 33 01.691 +24 34 54.83 L F51
2015-06-30 12:49:09 C 22 33 01.672 +24 34 57.54 L F51
2015-07-20 22:01:23 C 22 26 37.89 +24 48 54.9 q A13
2015-07-20 22:42:41 C 22 26 36.74 +24 48 50.2 q A13
2015-07-29 17:54:49 C 22 19 10.40 +24 03 43.1 q D29
2015-07-29 18:16:22 C 22 19 09.52 +24 03 36.9 q D29
2015-07-30 08:14:26 C 22 18 33.49 +23 59 05.4 u H21
2015-07-30 08:19:15 C 22 18 33.29 +23 59 04.0 u H21
2015-07-30 08:23:56 C 22 18 33.06 +23 59 02.2 u H21
2015-07-30 08:28:35 C 22 18 32.84 +23 59 01.1 u H21
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)