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
2002-07-07 06:09:57 C 16 02 28.26 -11 07 39.9 d 291
2002-07-07 06:39:22 C 16 02 27.70 -11 07 51.6 d 291
2002-07-09 04:23:14 C 16 01 45.34 -11 25 57.6 18.6 c 704
2002-07-09 04:41:28 C 16 01 45.07 -11 26 05.0 18.9 c 704
2002-07-09 04:59:38 C 16 01 44.72 -11 26 11.9 19.0 c 704
2002-07-09 05:17:45 C 16 01 44.44 -11 26 19.0 19.1 c 704
2002-07-09 05:36:31 C 16 01 44.17 -11 26 27.2 19.1 c 704
2002-07-14 04:19:24 C 16 00 37.65 -12 12 04.8 18.8 c 704
2002-07-14 04:37:55 C 16 00 37.60 -12 12 12.5 19.5 c 704
2002-07-14 04:56:15 C 16 00 37.36 -12 12 19.3 19.0 c 704
2002-07-14 05:14:15 C 16 00 37.30 -12 12 26.2 19.1 c 704
2005-06-16 08:48:53 C 20 09 36.39 -20 12 20.4 c 691
2005-06-16 09:14:06 C 20 09 35.29 -20 12 26.1 c 691
2005-06-16 09:39:21 C 20 09 34.18 -20 12 31.9 c 691
2006-08-28 15:11:56 C 23 58 30.79 -20 28 26.5 r E12
2006-08-28 15:21:17 C 23 58 30.25 -20 28 33.4 r E12
2006-08-28 15:30:38 C 23 58 29.78 -20 28 40.3 r E12
2006-08-28 15:39:44 C 23 58 29.35 -20 28 48.0 r E12
2006-09-02 05:14:40 C 23 52 41.20 -21 54 57.9 o 808
2006-09-02 05:25:29 C 23 52 40.47 -21 55 07.1 o 808
2006-09-02 05:36:29 C 23 52 39.81 -21 55 15.3 o 808
2006-09-27 14:24:06 C 23 05 13.45 -29 28 15.6 r E12
2006-09-27 14:24:44 C 23 05 13.38 -29 28 16.7 r E12
2006-09-27 14:37:53 C 23 05 12.19 -29 28 23.7 r E12
2006-09-27 14:38:30 C 23 05 12.12 -29 28 24.1 r E12
2006-09-27 14:51:43 C 23 05 10.89 -29 28 31.8 r E12
2006-09-27 14:52:22 C 23 05 10.82 -29 28 32.4 r E12
2006-09-27 15:05:56 C 23 05 09.60 -29 28 39.8 r E12
2006-09-27 15:06:33 C 23 05 09.49 -29 28 40.2 r E12
2006-09-30 03:40:50 C 22 59 44.14 -30 01 40.5 r 808
2006-09-30 03:53:29 C 22 59 42.90 -30 01 47.2 r 808
2006-09-30 04:03:39 C 22 59 42.07 -30 01 51.6 r 808
2006-10-02 01:39:00 C 22 55 39.26 -30 24 22.9 r 808
2006-10-02 01:48:59 C 22 55 38.25 -30 24 28.9 r 808
2006-10-02 01:59:59 C 22 55 37.13 -30 24 33.5 r 808
2006-10-10 13:51:25 C 22 38 22.81 -31 39 44.1 r E12
2006-10-10 14:00:04 C 22 38 22.05 -31 39 46.7 r E12
2006-10-10 14:08:43 C 22 38 21.37 -31 39 48.3 r E12
2006-10-10 14:17:22 C 22 38 20.68 -31 39 51.3 r E12
2006-10-15 01:41:59 C 22 30 14.22 -32 02 39.7 r 808
2006-10-15 01:52:30 C 22 30 13.50 -32 02 41.5 r 808
2006-10-15 02:02:30 C 22 30 12.66 -32 02 43.4 r 808
2006-10-25 11:27:10 C 22 15 09.93 -32 14 31.7 r E12
2006-10-25 11:37:00 C 22 15 09.39 -32 14 31.2 r E12
2006-10-25 11:46:50 C 22 15 08.89 -32 14 30.7 r E12
2006-10-25 11:56:43 C 22 15 08.42 -32 14 29.7 r E12
2006-11-13 09:50:13 C 22 03 28.18 -30 43 50.1 r E12
2006-11-13 10:03:17 C 22 03 28.11 -30 43 45.8 r E12
2006-11-13 10:16:34 C 22 03 28.00 -30 43 41.2 r E12
2006-11-13 10:29:35 C 22 03 27.90 -30 43 37.2 r E12