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
2025-05-26 13:31:29 C 22 08 15.855 +22 29 05.00 X F52
2025-05-26 13:48:54 C 22 08 16.293 +22 29 10.70 X F52
2025-05-26 14:06:14 C 22 08 16.707 +22 29 16.01 X F52
2025-06-23 12:14:29 C 22 17 36.005 +25 32 26.25 X F52
2025-06-23 12:33:48 C 22 17 35.988 +25 32 30.38 X F52
2025-06-23 12:53:06 C 22 17 35.982 +25 32 34.49 X F52
2025-06-23 13:12:24 C 22 17 35.967 +25 32 38.59 X F52
2025-06-24 11:35:23 C 22 17 35.962 +25 37 14.25 X F52
2025-06-24 11:52:42 C 22 17 35.935 +25 37 17.87 X F52
2025-06-24 12:10:02 C 22 17 35.914 +25 37 21.38 X F52
2025-06-24 12:27:23 C 22 17 35.883 +25 37 25.11 X F52
2025-07-03 11:21:10 C 22 16 17.685 +26 12 59.84 X F52
2025-07-03 11:38:33 C 22 16 17.456 +26 13 02.19 X F52
2025-07-03 11:55:54 C 22 16 17.239 +26 13 04.31 X F52
2025-07-03 12:13:17 C 22 16 17.012 +26 13 06.55 X F52
2025-07-26 08:01:33 C 22 00 53.078 +25 54 38.30 V T08
2025-07-26 08:15:34 C 22 00 52.349 +25 54 34.96 V T08
2025-07-26 08:39:59 C 22 00 51.324 +25 54 29.02 V T08
2025-07-26 08:53:17 C 22 00 50.710 +25 54 24.70 V T08
2025-07-29 12:19:39 C 21 57 13.994 +25 33 28.01 V T05
2025-07-29 13:03:18 C 21 57 11.738 +25 33 14.72 V T05
2025-07-29 13:07:42 C 21 57 11.534 +25 33 12.78 V T05
2025-07-29 13:16:15 C 21 57 11.040 +25 33 10.48 V T05
2025-07-31 10:47:15 C 21 54 50.534 +25 17 40.67 V T08
2025-07-31 10:51:12 C 21 54 50.345 +25 17 39.55 V T08
2025-07-31 10:55:10 C 21 54 50.138 +25 17 36.89 V T08
2025-07-31 11:04:47 C 21 54 49.536 +25 17 34.55 V T08
2025-08-02 08:41:02 C 21 52 21.282 +24 59 44.55 X F52
2025-08-02 08:57:46 C 21 52 20.323 +24 59 37.60 X F52
2025-08-02 09:14:27 C 21 52 19.376 +24 59 30.83 X F52
2025-08-02 09:31:16 C 21 52 18.399 +24 59 24.85 X F52
2025-08-13 11:37:10 C 21 35 41.098 +22 25 19.13 V T05
2025-08-13 11:49:58 C 21 35 40.224 +22 25 09.34 V T05
2025-08-13 12:02:26 C 21 35 39.370 +22 25 00.30 V T05
2025-08-14 11:35:43 C 21 34 02.220 +22 06 56.05 V T05
2025-08-14 11:48:17 C 21 34 01.351 +22 06 45.72 V T05
2025-08-14 12:12:09 C 21 33 59.659 +22 06 27.29 V T05
2025-08-15 07:58:39 C 21 32 37.698 +21 50 40.53 X F51
2025-08-15 08:35:15 C 21 32 35.080 +21 50 11.03 X F51
2025-08-15 08:53:37 C 21 32 33.766 +21 49 56.25 X F51
2025-08-19 01:34:24 C 21 26 15.576 +20 32 27.85 V R17
2025-08-19 01:56:06 C 21 26 13.980 +20 32 07.91 V R17
2025-08-19 02:17:24 C 21 26 12.391 +20 31 47.46 V R17
2025-08-19 02:44:07 C 21 26 10.442 +20 31 22.66 V R17
2025-08-21 12:56:41 C 21 21 57.58 +19 34 32.7 V D29
2025-08-21 13:03:03 C 21 21 57.10 +19 34 25.8 V D29
2025-08-21 13:17:03 C 21 21 56.05 +19 34 12.1 V D29
2025-08-21 13:23:25 C 21 21 55.49 +19 34 05.3 V D29
2025-08-21 13:37:25 C 21 21 54.55 +19 33 51.3 V D29
2025-08-21 13:43:47 C 21 21 54.08 +19 33 45.0 V D29
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)