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
2021-03-29 19:37:16 C 05 55 29.99 +31 42 38.3 V K87
2021-03-29 20:29:47 C 05 55 49.13 +31 47 06.3 V G34
2021-03-29 20:32:23 C 05 55 50.11 +31 47 20.2 V G34
2021-03-29 20:35:00 C 05 55 51.07 +31 47 33.2 V G34
2021-03-29 20:37:36 C 05 55 51.87 +31 47 45.3 V G34
2021-03-30 18:45:33 C 06 03 59.96 +33 37 55.1 q K73
2021-03-30 18:52:54 C 06 04 02.61 +33 38 29.9 q K73
2021-03-30 18:56:51 C 06 04 04.20 +33 38 46.1 V K87
2021-03-30 19:00:12 C 06 04 05.27 +33 39 05.0 q K73
2021-03-30 19:02:16 C 06 04 06.19 +33 39 11.8 V K87
2021-03-30 19:03:54 C 06 04 06.54 +33 39 22.7 q K73
2021-03-30 19:07:40 C 06 04 08.16 +33 39 37.9 V K87
2021-03-30 19:10:22 C 06 04 08.85 +33 39 55.3 q K73
2021-03-30 19:14:06 C 06 04 10.27 +33 40 13.0 q K73
2021-04-03 19:00:00 C 06 38 47.65 +40 17 36.7 V K87
2021-04-03 19:07:27 C 06 38 50.27 +40 18 03.0 V K87
2021-04-03 19:14:55 C 06 38 52.89 +40 18 29.0 V K87
2021-04-05 03:26:13 C 06 50 12.34 +42 05 35.1 V 703
2021-04-05 03:34:31 C 06 50 15.21 +42 06 01.0 V 703
2021-04-05 03:42:49 C 06 50 18.05 +42 06 26.8 V 703
2021-04-05 03:51:06 C 06 50 20.92 +42 06 51.8 V 703
2021-04-05 19:21:35 C 06 55 44.10 +42 53 58.0 V L18
2021-04-05 19:21:57 C 06 55 44.19 +42 53 59.1 V L18
2021-04-05 19:22:19 C 06 55 44.32 +42 54 00.0 V L18
2021-04-05 19:22:41 C 06 55 44.40 +42 54 01.2 V L18
2021-04-05 19:23:03 C 06 55 44.56 +42 54 02.2 V L18
2021-04-05 19:23:25 C 06 55 44.73 +42 54 03.3 V L18
2021-04-05 19:23:47 C 06 55 44.85 +42 54 04.3 V L18
2021-04-05 19:24:09 C 06 55 44.98 +42 54 05.4 V L18
2021-04-05 19:24:31 C 06 55 45.08 +42 54 06.6 V L18
2021-04-05 19:24:53 C 06 55 45.17 +42 54 07.5 V L18
2021-04-05 19:25:15 C 06 55 45.37 +42 54 08.7 V L18
2021-04-05 19:25:37 C 06 55 45.49 +42 54 09.6 V L18
2021-04-05 19:25:59 C 06 55 45.59 +42 54 10.9 V L18
2021-04-05 19:26:21 C 06 55 45.70 +42 54 11.7 V L18
2021-04-05 19:26:43 C 06 55 45.82 +42 54 12.8 V L18
2021-04-06 06:06:25 C 06 59 26.35 +43 25 17.1 V T08
2021-04-06 06:11:53 C 06 59 28.20 +43 25 32.5 V T08
2021-04-06 06:19:22 C 06 59 30.71 +43 25 53.5 V T08
2021-04-06 06:42:49 C 06 59 38.63 +43 26 59.4 V T08
2021-04-08 03:26:16 C 07 14 46.21 +45 23 24.4 V 703
2021-04-08 03:34:34 C 07 14 48.92 +45 23 44.1 V 703
2021-04-08 03:42:53 C 07 14 51.64 +45 24 02.8 V 703
2021-04-08 03:51:12 C 07 14 54.42 +45 24 23.1 V 703
2021-04-08 20:11:24 C 07 20 18.44 +46 01 56.9 V L18
2021-04-08 20:13:25 C 07 20 19.10 +46 02 01.4 V L18
2021-04-08 20:15:26 C 07 20 19.75 +46 02 05.8 V L18
2021-04-08 20:17:27 C 07 20 20.41 +46 02 10.2 V L18
2021-04-08 20:19:28 C 07 20 21.07 +46 02 14.6 V L18
2021-04-08 20:21:29 C 07 20 21.73 +46 02 19.2 V L18
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)