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
2021-04-10 05:53:27 C 07 31 14.591 +47 12 27.91 U F52
2021-04-10 06:12:10 C 07 31 20.465 +47 13 04.00 U F52
2021-04-10 06:12:43 C 07 31 20.60 +47 13 05.2 V T08
2021-04-10 06:17:26 C 07 31 22.08 +47 13 14.2 V T08
2021-04-10 06:21:26 C 07 31 23.368 +47 13 21.82 U F52
2021-04-10 06:26:04 C 07 31 24.79 +47 13 30.9 V T08
2021-04-10 06:40:47 C 07 31 29.41 +47 13 59.3 V T08
2021-04-11 04:03:25 C 07 38 15.64 +47 53 38.0 V 703
2021-04-11 04:11:12 C 07 38 17.99 +47 53 52.1 V 703
2021-04-11 04:18:58 C 07 38 20.45 +47 54 05.1 V 703
2021-04-11 04:26:44 C 07 38 22.87 +47 54 18.7 V 703
2021-04-11 16:50:19 C 07 42 14.92 +48 15 45.8 q C97
2021-04-11 16:53:07 C 07 42 15.76 +48 15 50.2 q C97
2021-04-11 16:54:32 C 07 42 16.20 +48 15 52.7 q C97
2021-04-11 16:56:40 C 07 42 16.85 +48 15 56.4 q C97
2021-04-14 17:12:30 C 08 03 58.17 +50 00 07.5 q 168
2021-04-14 18:36:30 C 08 04 22.30 +50 01 48.2 q 168
2021-04-14 19:59:30 C 08 04 46.22 +50 03 26.8 q 168
2021-04-15 17:13:30 C 08 10 50.75 +50 27 57.2 q 168
2021-04-15 18:37:30 C 08 11 14.29 +50 29 27.2 q 168
2021-04-16 06:27:48 C 08 14 33.91 +50 42 09.8 V T05
2021-04-16 06:32:26 C 08 14 35.18 +50 42 14.4 V T05
2021-04-16 06:41:44 C 08 14 37.73 +50 42 23.8 V T05
2021-04-16 06:57:34 C 08 14 42.06 +50 42 39.7 V T05
2021-04-16 17:01:30 C 08 17 29.85 +50 52 36.0 q 168
2021-04-16 17:07:29 C 08 17 31.48 +50 52 41.8 q 168
2021-04-16 18:33:30 C 08 17 55.01 +50 54 04.0 q 168
2021-04-17 04:36:36 C 08 20 40.28 +51 03 41.5 V 703
2021-04-17 04:44:47 C 08 20 42.48 +51 03 48.7 V 703
2021-04-17 04:52:58 C 08 20 44.64 +51 03 56.4 V 703
2021-04-17 05:01:09 C 08 20 46.89 +51 04 03.9 V 703
2021-04-17 16:59:30 C 08 24 01.89 +51 14 42.0 q 168
2021-04-17 18:19:36 C 08 24 23.27 +51 15 49.9 q 168
2021-04-17 20:44:13 C 08 25 02.02 +51 17 57.1 V L63
2021-04-17 20:56:54 C 08 25 05.37 +51 18 07.7 V L63
2021-04-17 21:08:32 C 08 25 08.50 +51 18 17.5 V L63
2021-04-18 17:00:29 C 08 30 25.02 +51 34 19.3 q 168
2021-04-18 18:16:30 C 08 30 44.76 +51 35 16.1 q 168
2021-04-18 19:30:30 C 08 31 04.03 +51 36 10.9 q 168
2021-04-19 17:06:30 C 08 36 39.76 +51 51 40.6 q 168
2021-04-19 18:22:30 C 08 36 59.01 +51 52 30.5 q 168
2021-04-19 19:30:30 C 08 37 16.27 +51 53 14.2 q 168
2021-04-20 04:07:11 C 08 39 27.62 +51 58 57.9 V 703
2021-04-20 04:15:35 C 08 39 29.77 +51 59 03.0 V 703
2021-04-20 04:23:58 C 08 39 31.80 +51 59 08.8 V 703
2021-04-20 04:32:21 C 08 39 33.88 +51 59 13.3 V 703
2021-04-20 08:19:20 C 08 40 30.87 +52 01 36.2 V T05
2021-04-20 08:24:00 C 08 40 32.02 +52 01 39.0 V T05
2021-04-20 08:31:56 C 08 40 33.97 +52 01 43.5 V T05
2021-04-20 08:46:31 C 08 40 37.62 +52 01 52.3 V T05
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)