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
2023-09-04 06:15:32 C 20 58 40.400 -26 57 01.30 X F51
2023-09-04 06:30:24 C 20 58 39.654 -26 57 04.22 X F51
2023-09-04 06:45:18 C 20 58 38.904 -26 57 07.02 X F51
2023-09-08 08:41:40 C 20 53 59.958 -27 13 50.09 X F51
2023-09-08 08:56:51 C 20 53 59.250 -27 13 52.39 X F51
2023-09-08 09:12:02 C 20 53 58.535 -27 13 54.71 X F51
2025-05-25 13:57:24 C 20 46 38.290 -18 41 18.45 X F51
2025-05-25 14:11:27 C 20 46 38.150 -18 41 19.87 X F51
2025-05-25 14:25:29 C 20 46 38.010 -18 41 21.90 X F51
2025-06-03 13:05:46 C 20 43 39.169 -19 12 06.39 X F52
2025-06-03 13:20:30 C 20 43 38.898 -19 12 08.55 X F52
2025-06-03 13:35:20 C 20 43 38.564 -19 12 11.15 X F52
2025-06-03 13:50:03 C 20 43 38.269 -19 12 13.55 X F52
2025-06-19 08:02:38 C 20 32 56.058 -20 28 15.49 V G96
2025-06-19 08:10:21 C 20 32 55.770 -20 28 17.33 V G96
2025-06-19 08:18:05 C 20 32 55.453 -20 28 18.55 V G96
2025-06-19 08:25:51 C 20 32 55.151 -20 28 20.71 V G96
2025-06-29 11:52:46 C 20 22 33.511 -21 28 10.44 X F51
2025-06-29 12:11:47 C 20 22 32.592 -21 28 15.31 X F51
2025-06-29 12:31:37 C 20 22 31.620 -21 28 20.33 X F51
2025-06-29 12:50:30 C 20 22 30.697 -21 28 25.18 X F51
2025-07-01 08:40:50 C 20 20 23.892 -21 39 36.87 W X05
2025-07-01 09:03:53 C 20 20 22.744 -21 39 42.72 W X05
2025-07-02 04:43:06 C 20 19 24.950 -21 44 47.10 W X05
2025-07-02 05:08:37 C 20 19 23.660 -21 44 53.74 W X05
2025-07-07 01:30:31 C 20 13 25.798 -22 14 59.55 W X05
2025-07-07 02:01:54 C 20 13 24.112 -22 15 07.93 W X05
2025-07-14 07:06:41 C 20 03 57.095 -22 59 11.07 W X05
2025-07-14 07:56:59 C 20 03 54.238 -22 59 23.34 W X05
2025-07-14 08:32:31 C 20 03 52.213 -22 59 32.04 W X05
2025-07-14 09:12:03 C 20 03 49.976 -22 59 41.65 W X05
2025-07-22 06:33:04 C 19 53 08.750 -23 44 51.68 U I41
2025-07-22 06:35:07 C 19 53 08.630 -23 44 52.40 U I41
2025-07-22 07:03:52 C 19 53 06.970 -23 44 58.88 U I41
2025-07-22 07:05:13 C 19 53 06.900 -23 44 59.21 U I41
2025-07-22 08:03:41 C 19 53 03.509 -23 45 12.49 U I41
2025-07-26 09:07:38 C 19 47 37.043 -24 06 22.09 X F52
2025-07-26 09:14:08 C 19 47 36.658 -24 06 23.52 X F52
2025-07-26 09:27:12 C 19 47 35.915 -24 06 26.22 X F52
2025-07-31 08:46:05 C 19 41 05.841 -24 30 14.74 X F51
2025-07-31 08:52:03 C 19 41 05.516 -24 30 15.92 X F51
2025-07-31 09:03:59 C 19 41 04.858 -24 30 18.18 X F51