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
2015-06-26 13:12:29 C 20 12 22.804 -21 08 56.02 L F51
2015-06-26 13:28:18 C 20 12 22.025 -21 08 59.83 L F51
2015-06-26 13:44:08 C 20 12 21.243 -21 09 03.74 L F51
2015-06-28 13:30:25 C 20 10 01.075 -21 20 50.09 L F51
2015-06-28 13:46:17 C 20 10 00.268 -21 20 54.05 L F51
2015-06-28 14:02:04 C 20 09 59.467 -21 20 57.90 L F51
2015-07-26 09:43:28 C 19 32 55.741 -23 56 08.23 L F51
2015-07-26 09:59:12 C 19 32 54.854 -23 56 11.11 L F51
2015-07-26 10:15:10 C 19 32 53.971 -23 56 14.19 L F51
2015-07-26 10:30:59 C 19 32 53.081 -23 56 17.34 L F51
2015-08-02 02:22:21 C 19 24 23.80 -24 24 51.6 u 807
2015-08-02 02:28:46 C 19 24 23.50 -24 24 52.7 u 807
2015-08-02 02:35:11 C 19 24 23.17 -24 24 54.2 u 807
2016-07-14 09:43:09 C 00 32 59.65 -09 29 56.7 R G45
2016-07-14 09:50:08 C 00 32 59.89 -09 29 58.3 R G45
2016-07-14 09:57:07 C 00 33 00.10 -09 29 59.7 R G45
2016-07-14 10:04:09 C 00 33 00.35 -09 30 00.3 R G45
2016-08-01 12:04:45 C 00 43 49.366 -11 18 45.87 L F51
2016-08-01 12:20:45 C 00 43 49.613 -11 18 51.81 L F51
2016-08-01 12:36:46 C 00 43 49.859 -11 18 57.75 L F51
2016-08-01 12:52:50 C 00 43 50.103 -11 19 03.73 L F51
2016-08-26 04:08:25 C 00 44 14.21 -16 54 54.8 q W98
2016-08-26 04:50:35 C 00 44 13.23 -16 55 28.6 q W98
2016-08-26 05:33:01 C 00 44 12.29 -16 56 01.6 q W98
2016-09-02 03:40:20 C 00 39 43.22 -19 17 42.6 q W98
2016-09-02 04:11:53 C 00 39 42.06 -19 18 11.8 q W98
2016-09-02 04:43:32 C 00 39 40.87 -19 18 40.8 q W98
2016-09-06 20:35:45 C 00 35 09.59 -21 05 11.1 o K95
2016-09-06 20:39:45 C 00 35 09.42 -21 05 14.8 o K95
2016-09-06 20:41:24 C 00 35 09.28 -21 05 18.1 o K95
2016-09-06 20:59:59 C 00 35 08.47 -21 05 35.6 o K95
2016-09-06 21:03:23 C 00 35 08.31 -21 05 39.9 o K95
2016-09-06 21:05:37 C 00 35 08.18 -21 05 41.6 o K95
2016-09-08 11:50:48 C 00 33 15.54 -21 44 34.4 L T05
2016-09-08 12:11:13 C 00 33 14.44 -21 44 55.3 L T05
2016-09-08 12:31:39 C 00 33 13.36 -21 45 15.9 L T05
2016-09-08 13:13:14 C 00 33 11.16 -21 45 57.5 L T05
2016-09-09 20:30:52 C 00 31 33.99 -22 17 41.8 o K95
2016-09-09 20:32:23 C 00 31 33.97 -22 17 43.1 o K95
2016-09-09 20:34:03 C 00 31 33.82 -22 17 45.1 o K95
2016-09-09 20:45:47 C 00 31 33.21 -22 17 57.4 o K95
2016-09-12 12:12:46 C 00 27 54.43 -23 24 13.0 L T05
2016-09-12 12:35:13 C 00 27 53.04 -23 24 35.3 L T05
2016-09-12 12:56:17 C 00 27 51.69 -23 24 58.8 L T05
2016-09-12 13:18:21 C 00 27 50.30 -23 25 21.2 L T05
2016-09-12 13:39:54 C 00 27 48.90 -23 25 44.1 L T05
2016-09-21 10:09:04 C 00 12 21.899 -27 15 02.86 L F51
2016-09-21 10:22:59 C 00 12 20.668 -27 15 17.99 L F51
2016-09-28 10:37:43 C 23 56 39.14 -30 13 22.4 L T05
2016-09-28 10:58:24 C 23 56 36.96 -30 13 44.0 L T05