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
2020-08-28 09:57:35 C 21 20 29.73 +15 21 12.1 V T08
2020-08-28 10:01:36 C 21 20 29.40 +15 21 06.7 V T08
2020-09-01 09:47:04 C 21 13 18.97 +13 11 35.6 V T08
2020-09-01 09:52:19 C 21 13 18.56 +13 11 28.7 V T08
2020-09-01 10:38:06 C 21 13 15.08 +13 10 24.2 V T08
2020-09-01 11:19:15 C 21 13 11.94 +13 09 25.6 V T08
2020-09-03 05:12:10 C 21 10 07.00 +12 09 16.4 V W33
2020-09-03 05:22:52 C 21 10 06.20 +12 09 00.7 V W33
2020-09-03 05:33:33 C 21 10 05.39 +12 08 45.0 V W33
2020-09-03 08:57:55 C 21 09 50.63 +12 03 48.6 V T05
2020-09-03 09:05:31 C 21 09 50.05 +12 03 38.1 V T05
2020-09-03 09:10:50 C 21 09 49.69 +12 03 30.1 V T05
2020-09-03 09:25:25 C 21 09 48.55 +12 03 08.1 V T05
2020-09-03 20:08:52 C 21 09 01.97 +11 47 20.5 V C95
2020-09-03 20:16:11 C 21 09 01.39 +11 47 09.5 V C95
2020-09-03 20:23:28 C 21 09 00.84 +11 46 58.6 V C95
2020-09-04 09:51:13 C 21 08 01.99 +11 27 06.0 V T08
2020-09-04 09:55:54 C 21 08 01.66 +11 26 59.2 V T08
2020-09-04 10:06:39 C 21 08 00.85 +11 26 43.0 V T08
2020-09-04 10:07:19 C 21 08 00.80 +11 26 42.5 V T08
2020-09-04 10:22:36 C 21 07 59.61 +11 26 19.4 V T08
2020-09-04 10:24:37 C 21 07 59.52 +11 26 16.0 V T08
2020-09-04 10:29:59 C 21 07 59.11 +11 26 08.6 V T08
2020-09-04 10:37:19 C 21 07 58.57 +11 25 56.9 V T08
2020-09-05 10:04:51 C 21 06 17.451 +10 50 46.37 U F51
2020-09-05 10:05:46 C 21 06 17.381 +10 50 44.93 U F51
2020-09-05 10:22:09 C 21 06 16.180 +10 50 20.18 U F51
2020-09-05 10:23:06 C 21 06 16.110 +10 50 18.74 U F51
2020-09-05 10:39:28 C 21 06 14.910 +10 49 54.00 U F51
2020-09-05 10:40:23 C 21 06 14.836 +10 49 52.51 U F51
2020-09-05 10:56:47 C 21 06 13.638 +10 49 27.65 U F51
2020-09-05 10:57:43 C 21 06 13.568 +10 49 26.33 U F51
2020-09-07 01:05:01 C 21 03 32.34 +09 51 07.7 q W46
2020-09-07 01:34:53 C 21 03 30.19 +09 50 21.8 q W46
2020-09-07 02:31:48 C 21 03 26.16 +09 48 54.4 q W46
2020-09-07 20:33:00 C 21 02 11.04 +09 20 54.1 18.1 q J43
2020-09-07 20:45:28 C 21 02 10.12 +09 20 34.7 18.6 q J43
2020-09-07 20:57:55 C 21 02 09.25 +09 20 15.4 18.6 q J43
2020-09-07 21:10:22 C 21 02 08.35 +09 19 56.3 18.2 q J43
2020-09-08 05:34:46 C 21 01 33.52 +09 06 44.7 q U55
2020-09-08 05:40:05 C 21 01 33.11 +09 06 36.3 q U55
2020-09-08 05:45:22 C 21 01 32.68 +09 06 28.5 q U55
2020-09-08 08:34:33 C 21 01 21.00 +09 02 06.5 V T08
2020-09-08 08:39:12 C 21 01 20.68 +09 01 59.2 V T08
2020-09-08 08:52:30 C 21 01 19.72 +09 01 38.6 V T08
2020-09-08 09:07:46 C 21 01 18.65 +09 01 14.5 V T08
2020-09-09 08:34:37 C 20 59 42.92 +08 24 13.5 V T08
2020-09-09 08:44:42 C 20 59 42.21 +08 23 57.5 V T08
2020-09-09 09:10:01 C 20 59 40.45 +08 23 17.3 V T08
2020-09-10 04:41:29 C 20 58 22.05 +07 52 08.7 V 703
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)