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
2021-04-20 17:04:30 C 08 42 42.93 +52 06 47.5 q 168
2021-04-20 18:17:30 C 08 43 00.91 +52 07 29.2 q 168
2021-04-20 19:31:30 C 08 43 19.21 +52 08 10.7 q 168
2021-04-21 17:04:30 C 08 48 37.32 +52 19 57.8 q 168
2021-04-21 18:04:30 C 08 48 51.76 +52 20 27.5 q 168
2021-04-21 19:18:30 C 08 49 09.60 +52 21 02.8 q 168
2021-04-22 03:18:08 C 08 51 05.64 +52 25 06.3 V G96
2021-04-22 03:26:01 C 08 51 07.51 +52 25 10.1 V G96
2021-04-22 03:33:53 C 08 51 09.36 +52 25 13.7 V G96
2021-04-22 03:41:44 C 08 51 11.21 +52 25 17.4 V G96
2021-04-22 19:36:33 C 08 54 58.69 +52 32 27.3 V K87
2021-04-22 19:38:40 C 08 54 59.21 +52 32 27.7 V K87
2021-04-22 19:40:46 C 08 54 59.67 +52 32 28.0 V K87
2021-04-22 20:48:23 C 08 55 15.30 +52 32 57.2 V L63
2021-04-22 21:03:43 C 08 55 18.84 +52 33 03.8 V L63
2021-04-22 21:19:14 C 08 55 22.48 +52 33 09.4 V L63
2021-04-23 07:32:34 C 08 57 46.156 +52 37 26.31 U F51
2021-04-23 07:50:20 C 08 57 50.222 +52 37 32.92 U F51
2021-04-23 08:08:05 C 08 57 54.272 +52 37 39.48 U F51
2021-04-23 19:40:23 C 09 00 34.98 +52 41 57.9 V K87
2021-04-23 19:42:29 C 09 00 35.52 +52 41 57.2 V K87
2021-04-23 19:44:36 C 09 00 35.94 +52 41 58.3 V K87
2021-04-23 20:58:51 C 09 00 52.69 +52 42 25.5 V L63
2021-04-23 21:14:24 C 09 00 56.24 +52 42 30.9 V L63
2021-04-23 21:30:20 C 09 00 59.78 +52 42 36.6 V L63
2021-04-24 06:31:11 C 09 03 03.62 +52 45 50.0 V T05
2021-04-24 06:36:27 C 09 03 04.83 +52 45 51.9 V T05
2021-04-24 06:44:26 C 09 03 06.62 +52 45 54.4 V T05
2021-04-24 06:59:05 C 09 03 09.82 +52 45 58.6 V T05
2021-04-24 07:53:00 C 09 03 21.847 +52 46 15.61 U F51
2021-04-24 07:53:56 C 09 03 22.078 +52 46 16.02 U F51
2021-04-24 08:10:47 C 09 03 25.832 +52 46 21.05 U F51
2021-04-24 08:11:43 C 09 03 26.012 +52 46 21.32 U F51
2021-04-24 08:28:34 C 09 03 29.798 +52 46 26.17 U F51
2021-04-24 08:29:30 C 09 03 29.992 +52 46 26.71 U F51
2021-04-25 05:03:08 C 09 08 06.71 +52 52 39.3 V 703
2021-04-25 05:12:25 C 09 08 08.79 +52 52 42.5 V 703
2021-04-25 05:17:58 C 09 08 10.12 +52 52 43.9 U I41
2021-04-25 05:19:20 C 09 08 10.42 +52 52 44.2 U I41
2021-04-25 05:21:43 C 09 08 10.95 +52 52 43.8 V 703
2021-04-25 05:31:00 C 09 08 12.90 +52 52 46.4 V 703
2021-04-25 07:45:47 C 09 08 42.50 +52 53 20.5 U I41
2021-04-25 07:48:29 C 09 08 43.08 +52 53 21.2 U I41
2021-04-28 07:41:23 C 09 24 01.02 +53 07 17.7 V T05
2021-04-28 07:47:19 C 09 24 02.25 +53 07 18.2 V T05
2021-04-28 07:55:55 C 09 24 03.97 +53 07 19.3 V T05
2021-04-28 08:17:06 C 09 24 08.18 +53 07 20.7 V T05
2021-04-30 03:01:40 C 09 32 41.76 +53 10 44.0 V G96
2021-04-30 03:09:12 C 09 32 43.21 +53 10 44.4 V G96
2021-04-30 03:16:43 C 09 32 44.64 +53 10 44.6 V G96
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)