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
2021-11-19 04:38:48 C 21 28 26.58 -45 04 24.9 V T05
2021-11-19 04:39:28 C 21 28 26.49 -45 04 24.5 V T05
2021-11-19 04:46:43 C 21 28 25.11 -45 04 24.2 V T05
2021-11-19 04:47:23 C 21 28 24.96 -45 04 24.5 V T05
2021-11-19 05:01:55 C 21 28 22.13 -45 04 22.9 V T05
2021-11-19 05:02:34 C 21 28 22.00 -45 04 22.5 V T05
2021-11-23 04:34:34 C 21 09 50.62 -44 50 08.0 V T05
2021-11-23 04:39:11 C 21 09 49.61 -44 50 07.1 V T05
2021-11-23 04:47:06 C 21 09 47.94 -44 50 04.8 V T05
2021-11-23 05:02:18 C 21 09 44.72 -44 50 01.4 V T05
2022-04-07 03:44:15 S 19 09 02.54 -11 35 21.1 L C51
2022-04-07 06:52:13 S 19 09 05.49 -11 35 12.8 L C51
2022-04-07 10:00:10 S 19 09 08.345 -11 35 04.13 L C51
2022-04-07 10:00:21 S 19 09 08.254 -11 35 02.90 L C51
2022-04-07 11:34:14 S 19 09 09.550 -11 34 58.84 L C51
2022-04-07 13:08:07 S 19 09 10.84 -11 34 55.4 L C51
2022-04-07 17:50:08 S 19 09 14.94 -11 34 42.4 L C51
2022-04-07 17:50:19 S 19 09 14.93 -11 34 43.1 L C51
2022-04-07 20:58:16 S 19 09 17.51 -11 34 36.1 L C51
2022-04-08 00:06:13 S 19 09 20.06 -11 34 27.6 L C51
2022-04-18 07:50:52 C 19 10 22.759 -11 28 37.34 V W68
2022-04-18 07:56:06 C 19 10 22.716 -11 28 37.42 V W68
2022-04-18 08:03:54 C 19 10 22.620 -11 28 36.62 V W68
2022-04-18 08:20:49 C 19 10 22.589 -11 28 37.74 V W68
2022-06-12 04:30:21 C 17 56 58.517 -14 27 08.14 V W68
2022-06-12 04:35:52 C 17 56 58.027 -14 27 09.58 V W68
2022-06-12 04:45:08 C 17 56 57.245 -14 27 11.16 V W68
2022-06-12 04:59:58 C 17 56 55.975 -14 27 14.87 V W68
2022-06-29 01:41:13 C 17 25 49.78 -15 58 35.5 X 221
2022-06-29 01:58:39 C 17 25 48.60 -15 58 39.3 X 221
2022-06-29 02:15:06 C 17 25 47.51 -15 58 43.0 X 221
2022-08-05 01:37:47 C 16 55 25.71 -18 52 59.2 u 807
2022-08-05 01:41:47 C 16 55 25.62 -18 52 59.9 u 807
2022-08-05 01:45:48 C 16 55 25.72 -18 53 00.9 u 807
2023-06-20 14:01:26 C 22 12 58.364 -17 35 40.22 X F51
2023-06-20 14:10:04 C 22 12 58.300 -17 35 41.79 X F51
2023-06-20 14:18:42 C 22 12 58.244 -17 35 43.45 X F51
2023-07-12 12:34:01 C 22 03 21.593 -19 55 13.89 X F52
2023-07-12 12:48:37 C 22 03 21.125 -19 55 18.57 X F52
2023-07-12 13:03:13 C 22 03 20.664 -19 55 23.39 X F52
2023-07-12 13:17:49 C 22 03 20.193 -19 55 28.27 X F52
2023-07-23 11:23:56 C 21 53 36.503 -21 28 06.14 X F51
2023-07-23 11:39:43 C 21 53 35.794 -21 28 11.90 X F51
2023-07-23 11:55:33 C 21 53 35.092 -21 28 17.80 X F51
2023-07-23 12:11:20 C 21 53 34.404 -21 28 23.63 X F51
2023-08-05 11:34:22 C 21 38 19.876 -23 25 41.19 X F51
2023-08-05 11:48:39 C 21 38 19.082 -23 25 46.74 X F51
2023-08-05 12:02:53 C 21 38 18.291 -23 25 51.97 X F51
2023-08-05 12:17:13 C 21 38 17.515 -23 25 57.08 X F51
2023-09-04 05:59:46 C 20 58 41.202 -26 56 58.27 X F51