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
2015-07-30 08:31:35 C 22 18 32.71 +23 59 00.0 u H21
2015-08-02 22:02:40 C 22 14 35.17 +23 26 46.9 q A13
2015-08-02 22:33:41 C 22 14 33.61 +23 26 33.8 q A13
2015-08-05 04:27:52 C 22 11 48.28 +23 01 52.2 N I41
2015-08-05 04:47:54 C 22 11 47.18 +23 01 41.9 N I41
2015-08-05 05:07:59 C 22 11 46.12 +23 01 32.7 N I41
2015-08-05 05:48:10 C 22 11 43.92 +23 01 12.7 N I41
2015-08-06 13:02:13 C 22 10 02.000 +22 45 14.08 L F51
2015-08-06 13:20:03 C 22 10 00.982 +22 45 04.52 L F51
2015-08-06 13:55:31 C 22 09 58.955 +22 44 45.43 L F51
2015-08-12 07:09:25 C 22 01 48.14 +21 18 36.4 R G45
2015-08-12 07:09:31 C 22 01 48.13 +21 18 36.1 R G45
2015-08-12 07:17:58 C 22 01 47.56 +21 18 29.8 R G45
2015-08-12 07:26:47 C 22 01 46.99 +21 18 23.5 R G45
2015-08-12 07:33:00 C 22 01 46.58 +21 18 19.1 R G45
2015-08-12 07:37:23 C 22 01 46.29 +21 18 15.9 R G45
2015-08-13 03:33:00 C 22 00 29.66 +21 03 28.7 u H15
2015-08-13 03:46:46 C 22 00 28.65 +21 03 19.9 u H15
2015-08-13 04:00:56 C 22 00 27.64 +21 03 08.7 u H15
2015-08-13 06:55:23 C 22 00 16.12 +21 00 57.1 R G45
2015-08-13 06:55:29 C 22 00 16.10 +21 00 57.1 R G45
2015-08-13 07:03:06 C 22 00 15.56 +21 00 51.2 R G45
2015-08-13 07:04:12 C 22 00 15.49 +21 00 50.2 R G45
2015-08-13 07:12:12 C 22 00 14.95 +21 00 44.4 R G45
2015-08-13 07:21:15 C 22 00 14.33 +21 00 37.3 R G45
2015-08-13 07:35:48 C 22 00 13.36 +21 00 26.4 R G45
2015-08-13 07:40:28 C 22 00 13.06 +21 00 22.8 R G45
2015-08-13 07:49:15 C 22 00 12.46 +21 00 16.3 R G45
2015-08-19 05:01:06 C 21 50 28.61 +18 57 21.7 t U78
2015-08-19 05:08:13 C 21 50 28.02 +18 57 14.8 t U78
2015-08-19 05:15:27 C 21 50 27.53 +18 57 07.7 t U78
2015-08-19 05:21:41 C 21 50 27.06 +18 57 01.6 t U78
2015-08-20 00:12:06 C 21 49 04.55 +18 38 14.2 q 160
2015-08-20 00:15:33 C 21 49 04.33 +18 38 10.3 q 160
2015-08-20 00:18:58 C 21 49 04.03 +18 38 07.2 q 160
2015-08-22 04:37:24 C 21 45 12.23 +17 43 00.3 q 703
2015-08-22 04:44:36 C 21 45 11.69 +17 42 52.1 q 703
2015-08-22 04:51:49 C 21 45 11.14 +17 42 44.3 q 703
2015-08-22 04:59:03 C 21 45 10.57 +17 42 35.7 q 703
2015-08-25 21:29:34 C 21 38 26.27 +15 59 17.1 q 160
2015-08-25 21:32:33 C 21 38 26.02 +15 59 13.2 q 160
2015-08-25 21:35:31 C 21 38 25.80 +15 59 09.5 q 160
2015-08-26 21:29:02 C 21 36 34.90 +15 29 09.3 q 160
2015-08-26 21:31:59 C 21 36 34.67 +15 29 05.4 q 160
2015-08-26 21:34:56 C 21 36 34.43 +15 29 01.6 q 160
2015-08-27 05:20:45 C 21 35 58.15 +15 19 06.2 q H21
2015-08-27 05:24:53 C 21 35 57.81 +15 19 00.7 q H21
2015-08-27 05:29:01 C 21 35 57.49 +15 18 55.4 q H21
2015-08-27 05:41:09 C 21 35 56.53 +15 18 39.8 q H21
2015-08-27 05:45:14 C 21 35 56.20 +15 18 34.6 q 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)