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
2025-09-18 19:41:59 C 20 37 38.782 +04 06 40.07 V M22
2025-09-18 19:59:11 C 20 37 37.908 +04 06 13.00 V M22
2025-09-18 20:17:15 C 20 37 36.986 +04 05 45.17 V M22
2025-09-24 19:24:40 B 20 31 32.00 +00 23 26.5 X L76
2025-09-24 19:27:13 C 20 31 31.999 +00 23 32.86 V M22
2025-09-24 19:31:46 C 20 31 31.834 +00 23 25.51 V M22
2025-09-24 19:40:13 C 20 31 31.457 +00 23 13.13 V M22
2025-09-24 19:40:57 B 20 31 31.35 +00 23 01.2 X L76
2025-09-24 19:57:14 B 20 31 30.77 +00 22 36.1 X L76
2025-09-24 19:57:50 C 20 31 30.794 +00 22 45.44 V M22
2025-09-24 20:13:32 B 20 31 30.10 +00 22 11.2 X L76
2025-09-28 01:25:09 C 20 28 54.137 -01 35 18.17 V W68
2025-09-28 01:32:26 C 20 28 53.921 -01 35 29.87 V W68
2025-09-28 01:36:23 C 20 28 53.791 -01 35 35.12 V W68
2025-09-28 02:00:08 C 20 28 53.040 -01 36 10.76 V W68
2025-09-30 19:06:13 C 20 27 04.250 -03 13 24.53 V M22
2025-09-30 19:10:08 C 20 27 04.222 -03 13 30.97 V M22
2025-09-30 19:18:08 C 20 27 03.943 -03 13 42.20 V M22
2025-09-30 19:36:16 C 20 27 03.490 -03 14 09.74 V M22
2025-10-06 07:43:59 C 20 24 26.970 -06 24 25.83 X F51
2025-10-06 08:02:03 C 20 24 26.673 -06 24 51.00 X F51
2025-10-06 08:20:06 C 20 24 26.387 -06 25 16.25 X F51
2025-10-06 08:38:06 C 20 24 26.100 -06 25 41.43 X F51
2025-10-08 10:53:25 C 20 23 49.54 -07 35 07.8 V D29
2025-10-08 11:11:07 C 20 23 49.33 -07 35 31.8 V D29
2025-10-08 11:28:48 C 20 23 49.12 -07 35 56.0 V D29
2025-10-11 21:05:52 C 20 23 15.070 -09 24 54.72 V R17
2025-10-11 21:26:15 C 20 23 14.962 -09 25 21.79 V R17
2025-10-11 21:51:46 C 20 23 14.863 -09 25 55.13 V R17
2025-10-11 22:11:16 C 20 23 14.746 -09 26 20.22 V R17
2025-10-15 18:31:24 C 20 23 14.875 -11 23 41.53 V M22
2025-10-15 18:35:18 C 20 23 14.830 -11 23 46.75 V M22
2025-10-15 18:45:06 C 20 23 14.846 -11 23 58.56 V M22
2025-10-15 19:06:11 C 20 23 14.863 -11 24 24.26 V M22
2025-10-16 15:59:39 B 20 23 20.60 -11 50 16.1 X L76
2025-10-16 16:10:28 B 20 23 20.65 -11 50 29.0 X L76
2025-10-16 16:21:17 B 20 23 20.70 -11 50 42.1 X L76
2025-10-20 05:49:33 C 20 24 04.121 -13 32 26.59 V T08
2025-10-20 05:56:54 C 20 24 04.193 -13 32 34.40 V T08
2025-10-20 06:04:08 C 20 24 04.258 -13 32 42.86 V T08
2025-10-20 06:29:38 C 20 24 04.548 -13 33 13.03 V T08
2025-10-21 02:56:25 C 20 24 19.649 -13 56 38.76 V W68
2025-10-21 03:03:41 C 20 24 19.738 -13 56 47.40 V W68
2025-10-21 03:26:26 C 20 24 19.980 -13 57 12.96 V W68
2025-10-21 03:31:05 C 20 24 20.098 -13 57 18.97 V W68
2025-11-02 03:13:32 C 20 31 04.206 -18 57 12.13 V G96
2025-11-02 03:22:18 C 20 31 04.490 -18 57 20.27 V G96
2025-11-02 03:31:05 C 20 31 04.775 -18 57 28.40 V G96
2025-11-02 03:39:52 C 20 31 05.056 -18 57 37.04 V G96
2025-11-08 01:34:53 C 20 36 24.566 -21 05 32.46 V G96
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)