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
2021-08-10 12:08:22 C 01 04 30.20 -11 11 41.4 U I41
2021-08-10 12:41:48 C 01 04 31.09 -11 11 55.3 V T08
2021-08-10 12:44:27 C 01 04 31.13 -11 11 56.3 V T08
2021-08-10 12:46:27 C 01 04 31.18 -11 11 57.1 V T08
2021-08-10 12:49:06 C 01 04 31.18 -11 11 58.7 V T08
2021-08-10 12:49:46 C 01 04 31.28 -11 11 58.3 V T08
2021-08-10 12:53:45 C 01 04 31.31 -11 12 00.4 V T08
2021-08-10 13:00:25 C 01 04 31.44 -11 12 03.1 V T08
2021-08-10 13:01:05 C 01 04 31.46 -11 12 04.3 V T08
2021-08-14 13:16:29 C 01 06 11.61 -11 59 04.5 V T08
2021-08-14 13:19:08 C 01 06 11.52 -11 59 06.3 V T08
2021-08-14 13:23:09 C 01 06 11.63 -11 59 08.4 V T08
2021-08-14 13:36:20 C 01 06 11.76 -11 59 15.6 V T08
2021-08-15 11:37:08 C 01 06 31.16 -12 10 59.0 V T05
2021-08-15 11:48:52 C 01 06 31.31 -12 11 05.1 V T05
2021-08-15 11:55:35 C 01 06 31.417 -12 11 09.25 U F51
2021-08-15 12:04:47 C 01 06 31.53 -12 11 14.5 V T05
2021-08-15 12:10:44 C 01 06 31.60 -12 11 17.4 V T05
2021-08-15 12:14:11 C 01 06 31.639 -12 11 19.40 U F51
2021-08-15 12:33:40 C 01 06 31.872 -12 11 29.95 U F51
2021-08-15 12:51:50 C 01 06 32.088 -12 11 39.85 U F51
2021-08-16 12:56:27 C 01 06 51.23 -12 24 56.8 V T05
2021-08-16 12:59:06 C 01 06 51.28 -12 24 58.8 V T05
2021-08-16 13:03:05 C 01 06 51.32 -12 25 00.9 V T05
2021-08-16 13:11:00 C 01 06 51.42 -12 25 05.2 V T05
2021-08-17 11:16:33 C 01 07 07.63 -12 37 41.6 V T08
2021-08-17 11:20:23 C 01 07 07.66 -12 37 42.9 V T08
2021-08-17 11:23:05 C 01 07 07.68 -12 37 44.7 V T08
2021-08-17 11:25:56 C 01 07 07.73 -12 37 46.3 V T08
2021-08-17 11:38:34 C 01 07 07.82 -12 37 53.5 V T08
2021-08-18 12:14:20 C 01 07 23.67 -12 52 23.6 V T08
2021-08-18 12:17:02 C 01 07 23.70 -12 52 25.1 V T08
2021-08-18 12:22:23 C 01 07 23.76 -12 52 28.0 V T08
2021-08-18 12:32:21 C 01 07 23.83 -12 52 34.9 V T08
2021-08-19 11:51:28 C 01 07 37.17 -13 06 46.2 V T05
2021-08-19 11:54:06 C 01 07 37.15 -13 06 48.5 V T05
2021-08-19 11:58:04 C 01 07 37.21 -13 06 51.0 V T05
2021-08-19 12:07:57 C 01 07 37.27 -13 06 57.2 V T05
2021-08-21 11:02:36 C 01 07 58.32 -13 36 54.5 V T08
2021-08-21 11:05:55 C 01 07 58.33 -13 36 57.2 V T08
2021-08-21 11:09:54 C 01 07 58.30 -13 36 59.8 V T08
2021-08-21 11:17:12 C 01 07 58.33 -13 37 04.5 V T08
2021-08-22 11:25:06 C 01 08 06.03 -13 53 14.6 V T08
2021-08-22 11:36:25 C 01 08 05.99 -13 53 22.5 V T08
2021-08-22 11:41:04 C 01 08 05.97 -13 53 25.3 V T08
2021-08-22 11:49:02 C 01 08 06.09 -13 53 30.7 V T08
2021-08-28 11:58:44 C 01 08 03.53 -15 41 01.8 V T05
2021-08-28 12:03:21 C 01 08 03.48 -15 41 05.8 V T05
2021-08-28 12:07:18 C 01 08 03.46 -15 41 08.7 V T05
2021-08-28 12:20:18 C 01 08 03.35 -15 41 19.3 V T05