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
2016-09-28 11:19:47 C 23 56 34.68 -30 14 05.1 L T05
2016-09-28 11:28:20 C 23 56 34.60 -30 14 03.8 q Q60
2016-09-28 11:42:00 C 23 56 32.35 -30 14 27.8 L T05
2016-09-28 11:42:18 C 23 56 33.16 -30 14 18.2 q Q60
2016-09-28 11:56:10 C 23 56 31.71 -30 14 32.3 q Q60
2016-10-05 12:20:21 C 23 38 22.12 -32 54 01.2 q Q60
2016-10-05 12:34:26 C 23 38 20.48 -32 54 13.7 q Q60
2016-10-05 12:58:37 C 23 38 17.65 -32 54 34.9 q Q60
2016-10-18 06:26:15 C 23 02 56.610 -36 18 51.82 L F51
2016-10-18 07:01:48 C 23 02 52.391 -36 19 08.31 L F51
2016-10-18 07:16:45 C 23 02 50.614 -36 19 15.25 L F51
2016-11-01 04:46:56 S 22 28 25.16 -37 37 28.7 L C51
2016-11-01 07:55:37 S 22 28 08.34 -37 37 35.0 L C51
2016-11-01 11:04:18 S 22 27 51.54 -37 37 40.4 L C51
2016-11-01 12:38:34 S 22 27 43.17 -37 37 42.6 L C51
2016-11-01 14:13:00 S 22 27 34.80 -37 37 45.6 L C51
2016-11-01 15:47:15 S 22 27 26.45 -37 37 47.7 L C51
2016-11-01 18:55:56 S 22 27 09.770 -37 37 51.89 L C51
2016-11-01 22:04:37 S 22 26 53.201 -37 37 55.20 L C51
2017-04-06 01:04:30 S 19 05 01.752 -09 56 50.78 L C51
2017-04-06 05:47:26 S 19 05 04.375 -09 56 39.62 L C51
2017-05-27 16:43:39 C 18 12 03.26 -11 39 17.3 q D29
2017-05-27 17:02:25 C 18 12 01.57 -11 39 21.9 q D29
2017-05-27 17:21:13 C 18 11 59.86 -11 39 25.8 q D29
2017-05-30 01:36:46 C 18 07 00.57 -11 52 08.4 q J43
2017-05-30 02:01:03 C 18 06 58.35 -11 52 13.7 q J43
2017-05-30 02:24:57 C 18 06 56.16 -11 52 19.4 q J43
2017-06-03 12:29:28 C 17 57 23.26 -12 17 18.2 L T05
2017-06-03 13:17:27 C 17 57 18.80 -12 17 29.7 L T05
2017-06-03 13:41:46 C 17 57 16.49 -12 17 35.7 L T05
2017-06-03 14:05:15 C 17 57 14.39 -12 17 40.9 L T05
2017-06-08 06:49:44 C 17 47 07.02 -12 45 19.8 u H21
2017-06-08 06:52:19 C 17 47 06.80 -12 45 20.7 u H21
2017-06-08 06:55:25 C 17 47 06.54 -12 45 21.4 u H21
2017-06-08 06:58:31 C 17 47 06.24 -12 45 22.1 u H21
2017-06-08 07:01:36 C 17 47 05.97 -12 45 22.7 u H21
2017-06-08 07:04:42 C 17 47 05.68 -12 45 23.5 u H21
2017-06-08 07:07:48 C 17 47 05.38 -12 45 24.2 u H21
2017-06-08 07:10:55 C 17 47 05.12 -12 45 25.1 u H21
2017-06-08 07:15:02 C 17 47 04.73 -12 45 26.0 u H21
2017-06-14 12:33:21 C 17 34 07.83 -13 22 40.5 L T08
2017-06-14 12:56:26 C 17 34 05.82 -13 22 46.4 L T08
2017-06-14 13:20:20 C 17 34 03.79 -13 22 51.8 L T08
2017-06-14 13:43:28 C 17 34 01.80 -13 22 57.1 L T08
2017-06-15 10:54:33 C 17 32 16.24 -13 28 15.6 L T08
2017-06-15 11:07:46 C 17 32 15.09 -13 28 20.2 L T08
2017-06-15 11:21:44 C 17 32 13.91 -13 28 22.7 L T08
2017-06-15 11:22:26 C 17 32 13.87 -13 28 23.0 L T08
2017-06-15 11:34:08 C 17 32 12.86 -13 28 26.7 L T08
2017-06-15 11:35:37 C 17 32 12.82 -13 28 26.5 L T08