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
2015-09-15 04:34:07 C 21 01 44.21 +03 23 10.0 R G45
2015-09-15 04:41:27 C 21 01 43.71 +03 22 56.9 R G45
2015-09-17 04:17:15 C 20 58 36.35 +01 58 22.7 q H45
2015-09-17 04:21:11 C 20 58 36.07 +01 58 16.4 q H45
2015-09-17 04:22:26 C 20 58 35.98 +01 58 13.5 q H45
2015-09-17 04:24:13 C 20 58 35.89 +01 58 10.4 q H45
2015-09-17 04:26:02 C 20 58 35.75 +01 58 07.1 q H45
2015-09-17 04:27:28 C 20 58 35.67 +01 58 05.1 q H45
2015-09-17 04:33:02 C 20 58 35.29 +01 57 54.6 q H45
2015-09-21 20:06:33 C 20 51 52.50 -01 21 31.8 q 160
2015-09-21 20:09:30 C 20 51 52.33 -01 21 37.1 q 160
2015-09-21 20:12:27 C 20 51 52.16 -01 21 42.3 q 160
2015-09-22 01:11:17 C 20 51 35.64 -01 30 35.1 u H21
2015-09-22 01:14:51 C 20 51 35.45 -01 30 41.5 u H21
2015-09-22 01:17:42 C 20 51 35.29 -01 30 46.5 u H21
2015-09-22 01:23:24 C 20 51 34.97 -01 30 56.7 u H21
2015-09-22 01:26:16 C 20 51 34.79 -01 31 01.7 u H21
2015-09-22 01:29:07 C 20 51 34.63 -01 31 06.9 u H21
2015-09-22 01:31:58 C 20 51 34.47 -01 31 12.0 u H21
2015-09-22 01:34:49 C 20 51 34.29 -01 31 17.3 u H21
2015-09-22 01:37:40 C 20 51 34.13 -01 31 22.4 u H21
2015-09-22 01:41:31 C 20 51 33.91 -01 31 29.1 u H21
2015-09-27 02:14:48 C 20 45 25.32 -05 04 35.9 u H21
2015-09-27 02:17:44 C 20 45 25.16 -05 04 41.2 u H21
2015-09-27 02:20:41 C 20 45 25.04 -05 04 46.3 u H21
2015-09-27 02:23:37 C 20 45 24.89 -05 04 51.4 u H21
2015-09-27 02:26:34 C 20 45 24.75 -05 04 56.6 u H21
2015-09-27 02:29:30 C 20 45 24.64 -05 05 01.7 u H21
2015-09-27 02:32:26 C 20 45 24.49 -05 05 06.8 u H21
2015-09-27 02:35:23 C 20 45 24.36 -05 05 12.0 u H21
2015-09-27 02:37:21 C 20 45 24.26 -05 05 15.7 u H21
2015-10-09 02:58:54 C 20 35 45.41 -13 00 41.0 q G96
2015-10-09 03:05:29 C 20 35 45.25 -13 00 51.0 q G96
2015-10-09 03:12:04 C 20 35 45.11 -13 01 01.2 q G96
2015-10-09 03:18:43 C 20 35 44.94 -13 01 11.5 q G96
2015-10-09 05:20:42 C 20 35 42.589 -13 04 16.76 L F51
2015-10-09 06:11:07 C 20 35 41.436 -13 05 33.99 L F51
2015-10-10 05:24:15 C 20 35 14.641 -13 40 52.61 L F51
2015-10-10 05:41:05 C 20 35 14.292 -13 41 18.02 L F51
2015-10-10 05:57:54 C 20 35 13.946 -13 41 43.43 L F51
2015-10-10 06:14:43 C 20 35 13.598 -13 42 08.80 L F51
2015-10-14 02:52:39 C 20 33 55.65 -15 58 04.6 q 703
2015-10-14 03:00:00 C 20 33 55.49 -15 58 15.2 q 703
2015-10-14 03:14:40 C 20 33 55.38 -15 58 37.6 q 703
2015-10-25 01:22:56 C 20 34 17.18 -21 40 41.4 R G45
2015-10-25 01:30:10 C 20 34 17.22 -21 40 50.7 R G45
2015-10-25 01:30:27 C 20 34 17.26 -21 40 49.9 R G45
2015-10-25 01:38:08 C 20 34 17.31 -21 40 59.4 R G45
2015-10-25 01:45:53 C 20 34 17.37 -21 41 08.4 R G45
2015-10-25 01:53:36 C 20 34 17.49 -21 41 17.8 R G45
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)