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
2021-04-30 03:24:15 C 09 32 46.08 +53 10 44.8 V G96
2021-04-30 07:07:24 C 09 33 29.42 +53 10 54.9 V T08
2021-04-30 07:12:02 C 09 33 30.31 +53 10 55.2 V T08
2021-04-30 07:20:04 C 09 33 31.84 +53 10 55.3 V T08
2021-04-30 07:34:42 C 09 33 34.63 +53 10 55.5 V T08
2021-05-05 04:48:21 C 09 55 05.85 +53 04 51.0 V 703
2021-05-05 05:03:20 C 09 55 08.46 +53 04 50.5 V 703
2021-05-05 05:10:49 C 09 55 09.76 +53 04 49.3 V 703
2021-05-07 20:23:45 C 10 05 47.40 +52 54 28.0 V K74
2021-05-07 20:25:58 C 10 05 47.79 +52 54 27.7 V K74
2021-05-07 20:28:11 C 10 05 48.13 +52 54 27.4 V K74
2021-05-07 20:31:32 C 10 05 48.67 +52 54 26.8 V K74
2021-05-08 06:53:09 C 10 07 29.65 +52 52 25.8 V T08
2021-05-08 06:54:29 C 10 07 29.90 +52 52 26.4 V T08
2021-05-08 06:57:52 C 10 07 30.37 +52 52 25.1 V T08
2021-05-08 07:05:13 C 10 07 31.60 +52 52 23.5 V T08
2021-05-08 07:07:53 C 10 07 31.50 +52 52 23.3 V T08
2021-05-08 07:19:53 C 10 07 33.90 +52 52 20.2 V T08
2021-05-08 07:22:33 C 10 07 34.31 +52 52 20.6 V T08
2021-05-09 04:46:14 C 10 10 59.78 +52 47 39.7 U I41
2021-05-09 04:47:35 C 10 10 59.98 +52 47 39.4 U I41
2021-05-09 05:45:34 C 10 11 09.01 +52 47 25.4 U I41
2021-05-09 05:48:22 C 10 11 09.45 +52 47 24.6 U I41
2021-05-10 06:46:21 C 10 15 04.39 +52 41 30.4 V T05
2021-05-10 06:52:18 C 10 15 05.28 +52 41 29.1 V T05
2021-05-10 07:00:22 C 10 15 06.46 +52 41 27.1 V T05
2021-05-10 07:15:37 C 10 15 08.80 +52 41 22.7 V T05
2021-05-12 06:58:43 C 10 22 23.35 +52 28 33.9 V T08
2021-05-12 07:04:41 C 10 22 24.18 +52 28 31.8 V T08
2021-05-12 07:13:58 C 10 22 25.56 +52 28 29.0 V T08
2021-05-12 07:28:38 C 10 22 27.72 +52 28 24.5 V T08
2021-05-14 06:39:13 C 10 29 20.67 +52 14 04.5 V T05
2021-05-14 06:43:50 C 10 29 21.33 +52 14 02.1 V T05
2021-05-14 06:52:33 C 10 29 22.55 +52 13 59.4 V T05
2021-05-14 07:29:57 C 10 29 27.77 +52 13 46.8 V T05
2021-05-16 06:50:00 C 10 36 06.48 +51 57 53.7 V T08
2021-05-16 06:54:03 C 10 36 07.05 +51 57 52.1 V T08
2021-05-16 07:04:42 C 10 36 08.49 +51 57 48.2 V T08
2021-05-16 07:21:18 C 10 36 10.70 +51 57 42.0 V T08
2021-05-19 04:42:48 C 10 45 29.52 +51 32 02.1 U I41
2021-05-19 04:47:34 C 10 45 30.13 +51 32 00.3 U I41
2021-05-19 05:06:11 C 10 45 32.51 +51 31 52.7 U I41
2021-05-19 05:13:37 C 10 45 33.49 +51 31 49.8 U I41
2021-05-20 04:24:55 C 10 48 34.15 +51 22 42.8 U I41
2021-05-20 04:27:38 C 10 48 34.50 +51 22 41.7 U I41
2021-05-20 04:42:31 C 10 48 36.38 +51 22 35.4 U I41
2021-05-20 04:54:08 C 10 48 37.87 +51 22 30.9 U I41
2021-05-20 04:54:48 C 10 48 37.98 +51 22 30.5 U I41
2021-05-20 05:22:50 C 10 48 41.47 +51 22 19.3 U I41
2021-05-20 05:25:34 C 10 48 41.82 +51 22 17.8 U I41
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)