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
2019-05-06 13:25:14 C 18 25 32.623 +44 44 23.72 U F51
2019-05-06 14:02:21 C 18 25 31.377 +44 44 45.28 U F51
2019-05-25 09:32:47 C 18 04 52.70 +48 06 20.3 V G96
2019-05-25 09:40:42 C 18 04 52.22 +48 06 21.6 V G96
2019-05-25 09:55:58 C 18 04 51.55 +48 06 27.1 V G96
2019-06-08 09:04:17 C 17 43 44.75 +49 00 28.8 V G96
2019-06-08 09:11:56 C 17 43 44.23 +49 00 28.5 V G96
2019-06-08 09:19:33 C 17 43 43.64 +49 00 29.0 V G96
2019-06-21 07:32:44 C 17 23 28.14 +48 27 42.4 V G96
2019-06-21 07:40:18 C 17 23 27.57 +48 27 40.0 V G96
2019-06-21 07:47:51 C 17 23 27.16 +48 27 38.3 V G96
2019-06-21 07:55:25 C 17 23 26.61 +48 27 36.2 V G96
2019-06-25 09:32:55 C 17 17 28.816 +48 01 26.97 U F52
2019-06-25 09:49:35 C 17 17 27.798 +48 01 21.91 U F52
2019-06-25 10:06:20 C 17 17 26.778 +48 01 16.84 U F52
2019-06-25 10:22:57 C 17 17 25.756 +48 01 11.75 U F52
2019-07-02 09:36:44 C 17 08 04.272 +47 00 15.97 U F52
2019-07-02 09:54:19 C 17 08 03.314 +47 00 08.53 U F52
2019-08-25 06:15:54 C 16 46 18.876 +32 49 18.49 U F52
2019-08-25 06:29:55 C 16 46 19.054 +32 49 08.12 U F52
2019-08-25 06:43:55 C 16 46 19.262 +32 48 57.57 U F52
2019-08-25 06:57:49 C 16 46 19.454 +32 48 47.34 U F52
2019-08-27 03:41:39 C 16 47 02.35 +32 15 41.1 V G96
2019-08-27 03:49:47 C 16 47 02.46 +32 15 35.3 V G96
2019-08-27 03:57:55 C 16 47 02.57 +32 15 29.1 V G96
2019-08-27 04:06:03 C 16 47 02.74 +32 15 22.9 V G96
2020-05-23 10:29:41 C 22 11 47.47 +21 31 19.9 V G96
2020-05-23 10:35:53 C 22 11 47.59 +21 31 21.3 V G96
2020-05-23 10:42:04 C 22 11 47.79 +21 31 23.1 V G96
2020-05-23 10:48:13 C 22 11 47.94 +21 31 25.3 V G96
2020-06-13 10:27:46 C 22 22 51.81 +23 55 53.3 V G96
2020-06-13 10:33:12 C 22 22 51.92 +23 55 54.8 V G96
2020-06-13 10:38:36 C 22 22 51.99 +23 55 56.0 V G96
2020-06-13 10:44:01 C 22 22 52.04 +23 55 57.3 V G96
2020-07-18 08:40:14 C 22 17 53.35 +25 38 50.3 V G96
2020-07-18 08:46:19 C 22 17 53.17 +25 38 49.8 V G96
2020-07-18 08:52:23 C 22 17 52.98 +25 38 49.2 V G96
2020-07-18 08:58:27 C 22 17 52.80 +25 38 48.8 V G96
2020-07-21 11:12:10 C 22 15 30.305 +25 30 23.09 U F51
2020-07-21 11:28:22 C 22 15 29.722 +25 30 20.82 U F51
2020-07-21 11:44:36 C 22 15 29.139 +25 30 18.56 U F51
2020-07-21 12:01:01 C 22 15 28.544 +25 30 16.18 U F51
2020-07-26 08:11:49 C 22 11 01.27 +25 07 39.0 V 703
2020-07-26 08:18:14 C 22 11 00.99 +25 07 38.6 V 703
2020-07-26 08:24:39 C 22 11 00.72 +25 07 36.8 V 703
2020-07-26 08:31:04 C 22 11 00.32 +25 07 34.9 V 703
2020-08-07 14:06:27 C 21 55 50.229 +23 08 30.56 U F51
2020-08-07 14:31:24 C 21 55 48.684 +23 08 15.85 U F51
2020-08-07 14:44:28 C 21 55 47.872 +23 08 08.14 U F51
2020-08-08 09:24:35 C 21 54 39.92 +22 57 03.8 V T08
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)