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
2025-08-23 00:25:38 B 21 19 21.641 +18 57 37.19 q Y84
2025-08-23 00:32:10 B 21 19 21.161 +18 57 30.42 q Y84
2025-08-23 00:38:47 B 21 19 20.652 +18 57 23.29 q Y84
2025-08-23 07:35:38 C 21 18 50.501 +18 50 00.92 V T05
2025-08-23 07:48:46 C 21 18 49.529 +18 49 46.99 V T05
2025-08-23 08:01:07 C 21 18 48.595 +18 49 33.42 V T05
2025-08-23 08:13:13 C 21 18 47.666 +18 49 20.53 V T05
2025-08-25 10:25:13 C 21 15 06.742 +17 53 46.57 V T05
2025-08-25 10:37:15 C 21 15 05.813 +17 53 32.78 V T05
2025-08-25 10:49:12 C 21 15 04.918 +17 53 19.00 V T05
2025-08-25 11:01:23 C 21 15 03.991 +17 53 04.63 V T05
2025-08-29 09:44:44 C 21 08 10.387 +15 59 28.75 V T08
2025-08-29 09:51:57 C 21 08 09.833 +15 59 19.86 V T08
2025-08-29 09:55:57 C 21 08 09.523 +15 59 14.96 V T08
2025-08-29 10:11:19 C 21 08 08.359 +15 58 54.44 V T08
2025-08-29 23:46:33 C 21 07 09.833 +15 41 43.48 V R17
2025-08-30 00:08:54 C 21 07 08.182 +15 41 15.18 V R17
2025-08-30 00:37:23 C 21 07 06.079 +15 40 38.68 V R17
2025-08-30 00:59:04 C 21 07 04.478 +15 40 11.46 V R17
2025-08-30 03:53:02 C 21 06 52.405 +15 36 29.23 V 703
2025-08-30 03:56:19 C 21 06 52.132 +15 36 24.80 V 703
2025-08-30 04:01:16 C 21 06 51.764 +15 36 19.01 V 703
2025-08-30 04:04:33 C 21 06 51.523 +15 36 14.36 V 703
2025-08-31 06:18:49 C 21 04 58.656 +15 02 20.94 V 703
2025-08-31 06:24:43 C 21 04 58.278 +15 02 13.74 V 703
2025-08-31 06:27:40 C 21 04 58.062 +15 02 10.36 V 703
2025-08-31 21:07:27 C 21 03 55.721 +14 43 00.98 V M22
2025-08-31 21:11:24 C 21 03 55.392 +14 42 56.05 V M22
2025-08-31 21:18:34 C 21 03 54.907 +14 42 46.94 V M22
2025-08-31 21:32:23 C 21 03 53.906 +14 42 29.09 V M22
2025-09-02 07:15:32 C 21 01 31.944 +13 57 12.26 X F52
2025-09-02 07:33:11 C 21 01 30.677 +13 56 48.38 X F52
2025-09-02 08:08:34 C 21 01 28.133 +13 56 00.41 X F52
2025-09-03 08:34:35 C 20 59 46.411 +13 22 33.35 V T05
2025-09-03 09:15:19 C 20 59 43.510 +13 21 37.15 V T05
2025-09-03 09:22:34 C 20 59 43.006 +13 21 28.40 V T05
2025-09-03 09:27:51 C 20 59 42.653 +13 21 19.76 V T05
2025-09-14 05:52:45 C 20 43 20.754 +06 57 06.44 X F51
2025-09-14 06:17:37 C 20 43 19.319 +06 56 28.11 X F51
2025-09-14 06:30:06 C 20 43 18.600 +06 56 08.89 X F51
2025-09-14 08:14:51 C 20 43 12.566 +06 53 27.92 V T08
2025-09-14 08:18:58 C 20 43 12.334 +06 53 21.05 V T08
2025-09-14 08:27:45 C 20 43 11.825 +06 53 07.51 V T08
2025-09-14 08:45:15 C 20 43 10.807 +06 52 40.48 V T08
2025-09-16 19:46:30 B 20 40 01.57 +05 21 08.4 X L76
2025-09-16 19:49:25 B 20 40 01.42 +05 21 04.1 X L76
2025-09-16 19:52:43 B 20 40 01.24 +05 20 58.3 X L76
2025-09-17 20:17:06 B 20 38 47.38 +04 42 59.5 V 130
2025-09-17 20:25:01 B 20 38 47.02 +04 42 47.5 V 130
2025-09-17 20:31:47 B 20 38 46.63 +04 42 36.6 V 130
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)