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
2017-06-15 11:48:04 C 17 32 11.77 -13 28 29.7 L T08
2017-06-26 10:04:54 C 17 12 30.93 -14 33 19.7 L T08
2017-06-26 10:17:37 C 17 12 30.03 -14 33 23.4 L T08
2017-06-26 10:29:40 C 17 12 29.24 -14 33 27.3 L T08
2017-06-26 10:42:28 C 17 12 28.34 -14 33 29.2 L T08
2017-06-28 02:52:21 C 17 09 53.01 -14 43 13.9 q W34
2017-06-28 03:10:06 C 17 09 51.81 -14 43 19.0 q W34
2017-06-28 03:39:18 C 17 09 49.98 -14 43 26.0 q W34
2017-06-28 03:52:56 C 17 09 49.06 -14 43 28.3 q W34
2017-07-02 04:01:20 C 17 04 07.45 -15 06 27.7 q 703
2017-07-02 04:20:25 C 17 04 06.38 -15 06 32.1 q 703
2017-07-02 04:29:35 C 17 04 05.97 -15 06 34.9 q 703
2017-07-02 04:38:49 C 17 04 05.38 -15 06 36.7 q 703
2017-07-25 06:38:52 C 16 45 14.859 -17 11 15.73 L F51
2017-07-25 06:54:44 C 16 45 14.616 -17 11 19.25 L F51
2017-07-25 07:10:37 C 16 45 14.367 -17 11 22.53 L F51
2017-07-25 07:26:30 C 16 45 14.121 -17 11 25.92 L F51
2018-07-08 12:30:34 C 21 58 45.036 -19 45 52.79 U F51
2018-07-08 12:44:53 C 21 58 44.604 -19 45 57.31 U F51
2018-07-08 12:59:14 C 21 58 44.182 -19 46 01.72 U F51
2018-07-08 13:13:35 C 21 58 43.751 -19 46 06.23 U F51
2018-08-08 09:40:39 C 21 25 54.423 -24 07 23.99 U F51
2018-08-08 10:12:16 C 21 25 52.614 -24 07 35.02 U F51
2018-08-08 10:28:06 C 21 25 51.710 -24 07 40.54 U F51
2020-05-17 14:03:33 C 20 42 01.949 -18 22 10.75 U F51
2020-05-17 14:12:15 C 20 42 01.929 -18 22 11.48 U F51
2020-05-17 14:20:46 C 20 42 01.904 -18 22 12.30 U F51
2020-05-17 14:29:27 C 20 42 01.879 -18 22 13.00 U F51
2020-08-15 08:14:25 C 19 16 11.987 -25 17 56.12 U F51
2020-08-15 08:44:13 C 19 16 10.800 -25 17 59.36 U F51
2020-08-22 06:30:50 C 19 10 23.997 -25 34 17.01 U F51
2020-08-22 06:44:51 C 19 10 23.556 -25 34 18.31 U F51
2020-08-22 06:58:50 C 19 10 23.102 -25 34 19.52 U F51
2020-08-22 07:12:47 C 19 10 22.651 -25 34 20.67 U F51
2020-09-10 06:18:42 C 19 01 34.111 -25 59 29.52 U F51
2020-09-10 06:33:37 C 19 01 33.973 -25 59 30.01 U F51
2020-09-10 06:48:34 C 19 01 33.842 -25 59 30.47 U F51
2020-09-10 07:03:31 C 19 01 33.709 -25 59 30.68 U F51
2021-08-06 13:20:48 C 01 02 27.62 -10 31 51.1 V T08
2021-08-06 13:24:49 C 01 02 27.81 -10 31 51.4 V T08
2021-08-06 13:47:53 C 01 02 28.26 -10 32 01.0 V T08
2021-08-06 13:55:51 C 01 02 28.50 -10 32 03.2 V T08
2021-08-08 11:00:17 C 01 03 29.51 -10 50 16.8 U I41
2021-08-08 13:14:23 C 01 03 32.44 -10 51 11.8 V T05
2021-08-08 13:17:43 C 01 03 32.56 -10 51 13.5 V T05
2021-08-08 13:23:38 C 01 03 32.70 -10 51 15.3 V T05
2021-08-08 13:30:57 C 01 03 32.76 -10 51 18.6 V T05
2021-08-10 10:08:43 C 01 04 28.07 -11 10 47.2 U I41
2021-08-10 11:08:07 C 01 04 29.13 -11 11 14.1 U I41
2021-08-10 11:31:44 C 01 04 29.54 -11 11 24.9 U I41