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
2015-10-25 05:08:36 C 20 34 19.899 -21 45 08.29 L F51
2015-10-25 05:24:28 C 20 34 20.063 -21 45 27.05 L F51
2015-10-25 05:40:18 C 20 34 20.227 -21 45 45.86 L F51
2015-10-25 05:56:10 C 20 34 20.391 -21 46 04.59 L F51
2015-11-01 20:01:20 C 20 37 55.33 -25 08 49.1 o Z22
2015-11-01 20:12:45 C 20 37 55.63 -25 09 00.7 o Z22
2015-11-01 20:17:14 C 20 37 55.71 -25 09 05.4 o Z22
2015-11-01 20:24:51 C 20 37 55.88 -25 09 12.6 o Z22
2015-11-02 01:43:19 C 20 38 04.53 -25 14 45.2 q 703
2015-11-02 01:50:39 C 20 38 04.76 -25 14 52.8 q 703
2015-11-02 01:58:00 C 20 38 04.89 -25 14 59.6 q 703
2015-11-02 02:05:20 C 20 38 05.11 -25 15 07.5 q 703
2016-03-15 16:12:51 C 04 28 56.76 +10 07 29.8 q 168
2016-03-15 16:16:41 C 04 28 58.40 +10 08 10.4 q 168
2016-03-15 17:15:21 C 04 29 23.68 +10 18 35.5 q 168
2016-03-15 17:20:21 C 04 29 25.87 +10 19 28.6 q 168
2016-03-16 02:06:32 C 04 33 15.30 +11 53 04.6 q H45
2016-03-16 02:07:25 C 04 33 15.66 +11 53 13.7 q H45
2016-03-16 02:08:11 C 04 33 15.99 +11 53 22.1 q H45
2016-03-16 02:08:58 C 04 33 16.33 +11 53 30.2 q H45
2016-03-16 02:09:57 C 04 33 16.77 +11 53 40.9 q H45
2016-03-16 02:10:59 C 04 33 17.22 +11 53 51.8 q H45
2016-03-16 02:12:07 C 04 33 17.70 +11 54 03.8 q H45
2016-03-16 02:13:31 C 04 33 18.31 +11 54 18.7 q H45
2016-03-17 01:12:07 C 04 43 27.82 +15 56 05.6 u H21
2016-03-17 01:13:59 C 04 43 28.63 +15 56 25.1 u H21
2016-03-17 01:16:03 C 04 43 29.53 +15 56 46.5 u H21
2016-03-17 01:18:08 C 04 43 30.43 +15 57 08.1 u H21
2016-03-17 01:20:12 C 04 43 31.33 +15 57 29.7 u H21
2016-03-17 01:22:17 C 04 43 32.25 +15 57 51.4 u H21
2016-03-17 01:24:22 C 04 43 33.15 +15 58 12.9 u H21
2016-03-17 01:26:26 C 04 43 34.07 +15 58 34.5 u H21
2016-03-17 01:28:30 C 04 43 34.98 +15 58 55.9 u H21
2016-03-17 01:30:34 C 04 43 35.88 +15 59 17.4 u H21
2016-03-17 01:32:38 C 04 43 36.80 +15 59 39.0 u H21
2016-03-17 01:34:42 C 04 43 37.72 +16 00 00.0 u H21
2016-03-17 01:37:49 C 04 43 39.09 +16 00 32.5 u H21
2016-03-17 01:46:46 C 04 43 43.09 +16 02 08.2 q H45
2016-03-17 01:47:56 C 04 43 43.62 +16 02 19.8 q H45
2016-03-17 01:49:09 C 04 43 44.13 +16 02 32.5 q H45
2016-03-17 01:50:15 C 04 43 44.62 +16 02 44.3 q H45
2016-03-17 01:51:37 C 04 43 45.21 +16 02 58.6 q H45
2016-03-17 01:52:49 C 04 43 45.73 +16 03 10.5 q H45
2016-03-17 01:53:59 C 04 43 46.25 +16 03 23.0 q H45
2016-03-17 01:55:01 C 04 43 46.70 +16 03 34.1 q H45
2016-03-17 19:32:06 C 04 51 40.79 +19 04 11.4 q G34
2016-03-17 19:36:21 C 04 51 42.69 +19 04 54.1 q G34
2016-03-17 19:40:36 C 04 51 44.56 +19 05 36.8 q G34
2016-03-17 19:44:50 C 04 51 46.45 +19 06 19.6 q G34
2016-03-18 02:30:55 C 04 54 50.32 +20 14 35.3 q 703
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)