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
2020-09-10 04:50:11 C 20 58 21.52 +07 51 54.4 V 703
2020-09-10 04:58:52 C 20 58 20.92 +07 51 41.0 V 703
2020-09-10 05:55:48 C 20 58 17.422 +07 50 11.01 U F52
2020-09-10 06:12:30 C 20 58 16.275 +07 49 44.29 U F52
2020-09-10 06:45:50 C 20 58 13.991 +07 48 51.05 U F52
2020-09-10 07:02:36 C 20 58 12.840 +07 48 24.23 U F52
2020-09-10 20:50:22 C 20 57 18.13 +07 26 14.2 17.9 q J43
2020-09-10 21:05:24 C 20 57 17.16 +07 25 49.8 18.1 q J43
2020-09-10 21:20:20 C 20 57 16.16 +07 25 26.0 18.3 q J43
2020-09-10 21:35:19 C 20 57 15.15 +07 25 01.7 18.4 q J43
2020-09-11 08:56:34 C 20 56 30.42 +07 06 44.1 V T05
2020-09-11 09:02:37 C 20 56 30.00 +07 06 34.4 V T05
2020-09-11 09:36:52 C 20 56 27.67 +07 05 38.7 V T05
2020-09-11 09:46:52 C 20 56 27.04 +07 05 22.5 V T05
2020-09-12 09:12:48 C 20 54 56.63 +06 27 21.7 V T08
2020-09-12 09:21:29 C 20 54 56.05 +06 27 07.3 V T08
2020-09-12 09:40:50 C 20 54 54.76 +06 26 35.9 V T08
2020-09-14 05:50:03 C 20 52 10.100 +05 14 17.03 U F52
2020-09-14 06:06:42 C 20 52 09.047 +05 13 49.67 U F52
2020-09-14 06:23:23 C 20 52 07.994 +05 13 22.22 U F52
2020-09-14 06:40:11 C 20 52 06.934 +05 12 54.56 U F52
2020-09-14 08:50:13 C 20 51 58.73 +05 09 20.7 V T05
2020-09-14 08:54:52 C 20 51 58.42 +05 09 12.8 V T05
2020-09-14 09:05:26 C 20 51 57.77 +05 08 55.5 V T05
2020-09-14 09:26:00 C 20 51 56.46 +05 08 21.4 V T05
2020-09-15 12:16:41 C 20 50 20.362 +04 24 08.50 V P07
2020-09-15 12:18:35 C 20 50 20.244 +04 24 05.22 V P07
2020-09-15 12:55:55 C 20 50 17.954 +04 23 03.48 V P07
2020-09-15 13:08:02 C 20 50 17.218 +04 22 43.25 V P07
2020-09-15 13:18:57 C 20 50 16.541 +04 22 25.43 V P07
2020-09-15 13:55:13 C 20 50 14.362 +04 21 25.56 V P07
2020-09-15 14:08:33 C 20 50 13.493 +04 21 05.36 V P07
2020-09-16 07:51:49 C 20 49 11.56 +03 51 35.6 V T08
2020-09-16 07:57:47 C 20 49 11.18 +03 51 25.2 V T08
2020-09-16 08:06:29 C 20 49 10.63 +03 51 11.2 V T08
2020-09-16 08:27:42 C 20 49 09.37 +03 50 36.0 V T08
2020-09-20 07:48:42 C 20 43 58.83 +01 12 01.6 V T08
2020-09-20 07:53:21 C 20 43 58.56 +01 11 53.9 V T08
2020-09-20 08:19:15 C 20 43 57.20 +01 11 10.9 V T08
2020-09-21 05:43:22 C 20 42 53.464 +00 35 36.69 U F52
2020-09-21 06:16:47 C 20 42 51.751 +00 34 41.20 U F52
2020-09-21 06:33:32 C 20 42 50.890 +00 34 13.38 U F52
2020-09-22 08:13:16 C 20 41 36.72 -00 08 19.6 V T05
2020-09-22 08:17:55 C 20 41 36.50 -00 08 27.2 V T05
2020-09-22 08:26:33 C 20 41 36.04 -00 08 41.4 V T05
2020-09-22 08:45:46 C 20 41 35.10 -00 09 13.4 V T05
2020-09-23 18:56:57 C 20 40 01.78 -01 05 43.7 o 069
2020-09-23 19:11:58 C 20 40 01.10 -01 06 08.9 o 069
2020-09-23 19:26:57 C 20 40 00.39 -01 06 33.6 o 069
2020-09-29 07:53:45 C 20 34 52.30 -04 41 08.8 V T05
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)