4341 Poseidon (1987 KF)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6801107602 ± 1.58e-08
Semi-major axis (a)1.8342474389 AU ± 1.45e-09
Inclination (i)11.84040545° ± 2.06e-06
Long. of Asc. Node (Ω)108.02422834° ± 1.23e-05
Arg. of Perihelion (ω)15.83332878° ± 1.29e-05
Mean Anomaly (M)202.70165030° ± 3.72e-06
Mean Motion (n)0.3967577275°/day ± 4.69e-10
Perihelion dist (q)0.58675602 AU ± 2.90e-08
Aphelion dist (Q)3.08173886 AU ± 2.91e-08
Orbital Period2.48420186 yr ± 2.94e-09
Physical Parameters
H (abs. magnitude)16.07
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.309″
Uncertainty0
Orbit TypeApollo
MOID0.194489 AU
Observations Used802
Gaia Obs Used38
Oppositions18
Arc Total1987-2025
First Observation Used1987-05-29
Last Observation Used2025-07-31
Observations (842)
Date Type RA Dec Mag Band Observatory
2010-06-19 09:37:52 C 20 13 17.11 -20 28 55.4 r G96
2010-08-01 08:42:00 C 19 17 36.597 -24 16 34.83 L F51
2010-08-01 08:59:54 C 19 17 35.678 -24 16 37.71 L F51
2011-08-10 22:13:35 C 00 28 01.85 -14 21 56.6 v C32
2011-08-10 22:22:07 C 00 28 01.75 -14 22 00.6 v C32
2011-08-10 22:25:40 C 00 28 01.74 -14 22 03.0 v C32
2011-08-10 22:29:41 C 00 28 01.76 -14 22 04.9 v C32
2011-08-29 16:16:02 C 00 18 17.87 -19 28 18.9 r E12
2011-08-29 17:02:05 C 00 18 15.94 -19 28 56.5 r E12
2011-09-17 11:02:47 C 23 50 48.851 -26 09 11.43 L F51
2011-09-17 11:19:13 C 23 50 47.466 -26 09 26.22 L F51
2011-09-23 06:20:51 C 23 38 46.60 -28 11 06.7 r 703
2011-09-23 06:32:17 C 23 38 45.45 -28 11 16.2 r 703
2011-09-23 06:43:42 C 23 38 44.44 -28 11 26.6 r 703
2011-09-23 06:55:05 C 23 38 43.40 -28 11 35.8 r 703
2012-04-09 15:07:57 C 19 02 57.571 -07 27 57.50 L F51
2012-04-09 15:25:15 C 19 02 57.330 -07 27 57.09 L F51
2012-05-26 07:39:47 C 17 56 14.12 -09 35 47.2 18.6 c 704
2012-05-26 07:55:34 C 17 56 12.52 -09 35 50.0 19.2 c 704
2012-05-26 08:11:32 C 17 56 10.94 -09 35 55.7 18.7 c 704
2012-05-26 08:27:17 C 17 56 09.36 -09 35 59.0 18.5 c 704
2012-05-26 08:43:10 C 17 56 07.86 -09 36 04.3 18.9 c 704
2012-06-10 09:43:25 C 17 21 47.07 -11 16 35.7 o 926
2012-06-10 10:00:09 C 17 21 45.60 -11 16 39.9 o 926
2012-06-10 10:13:51 C 17 21 44.39 -11 16 43.7 o 926
2012-06-14 07:26:36 C 17 13 43.75 -11 43 51.5 r G96
2012-06-14 07:33:56 C 17 13 43.14 -11 43 53.4 r G96
2012-06-14 07:41:28 C 17 13 42.49 -11 43 55.8 r G96
2012-06-14 07:49:05 C 17 13 41.80 -11 43 57.3 r G96
2012-06-22 03:57:23 C 16 59 24.38 -12 38 28.3 o 926
2012-06-22 04:14:01 C 16 59 23.21 -12 38 33.1 o 926
2012-06-22 04:30:39 C 16 59 22.05 -12 38 38.0 o 926
2013-07-14 11:52:03 C 21 46 45.109 -20 52 19.93 L F51
2013-07-14 12:15:09 C 21 46 44.200 -20 52 27.80 L F51
2013-07-14 12:37:24 C 21 46 43.340 -20 52 35.24 L F51
2013-07-14 13:00:58 C 21 46 42.430 -20 52 43.18 L F51
2015-06-13 12:58:42 C 20 25 22.330 -19 56 51.05 L F51
2015-06-13 13:14:58 C 20 25 21.740 -19 56 54.52 L F51
2015-06-20 11:52:10 C 20 18 57.300 -20 34 03.67 L F51
2015-06-20 12:08:31 C 20 18 56.591 -20 34 07.55 L F51
2015-06-20 12:24:48 C 20 18 55.884 -20 34 11.46 L F51
2015-06-20 12:41:08 C 20 18 55.183 -20 34 15.17 L F51
2015-06-21 12:38:56 C 20 17 53.666 -20 39 52.74 L F51
2015-06-21 12:54:45 C 20 17 52.950 -20 39 56.27 L F51
2015-06-21 13:10:36 C 20 17 52.250 -20 40 00.14 L F51
2015-06-21 13:26:26 C 20 17 51.528 -20 40 03.79 L F51
2015-06-23 12:35:18 C 20 15 46.250 -20 51 17.72 L F52
2015-06-23 13:08:06 C 20 15 44.728 -20 51 25.51 L F52
2015-06-23 13:24:30 C 20 15 43.955 -20 51 29.35 L F52
2015-06-26 12:56:38 C 20 12 23.590 -21 08 52.07 L F51