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
2021-10-14 09:37:14 C 23 50 07.54 -38 16 38.9 V T05
2021-10-14 10:28:12 C 23 49 59.89 -38 17 36.0 V T05
2021-10-16 05:51:38 C 23 43 37.45 -39 05 16.9 q 834
2021-10-16 06:27:05 C 23 43 32.10 -39 05 53.9 q 834
2021-10-16 07:28:51 C 23 43 24.52 -39 07 19.6 V T08
2021-10-16 07:31:31 C 23 43 24.11 -39 07 22.4 V T08
2021-10-16 07:35:29 C 23 43 23.48 -39 07 26.6 V T08
2021-10-16 07:56:05 C 23 43 20.31 -39 07 49.0 V T08
2021-10-24 07:37:37 C 23 13 19.49 -42 04 12.5 V T08
2021-10-24 07:42:16 C 23 13 18.70 -42 04 16.4 V T08
2021-10-24 07:50:13 C 23 13 17.31 -42 04 22.2 V T08
2021-10-24 08:41:17 C 23 13 08.70 -42 05 00.8 V T08
2021-10-26 00:14:55 C 23 06 41.79 -42 33 31.7 q Y00
2021-10-26 00:20:58 C 23 06 40.75 -42 33 36.2 q Y00
2021-10-26 00:25:14 C 23 06 40.03 -42 33 38.4 q Y00
2021-10-28 07:20:18 C 22 57 37.70 -43 09 09.6 V T08
2021-10-28 07:24:20 C 22 57 36.98 -43 09 11.8 V T08
2021-10-28 07:32:18 C 22 57 35.62 -43 09 16.6 V T08
2021-10-28 07:46:54 C 22 57 33.10 -43 09 25.1 V T08
2021-10-28 08:30:08 S 22 57 26.417 -43 09 34.31 L C51
2021-10-28 14:46:35 S 22 56 24.166 -43 13 16.25 L C51
2021-10-28 16:21:24 S 22 56 08.513 -43 14 12.66 L C51
2021-10-28 17:55:28 S 22 55 52.939 -43 15 07.16 L C51
2021-10-28 19:29:32 S 22 55 37.382 -43 16 01.20 L C51
2021-10-28 22:37:51 S 22 55 06.202 -43 17 49.70 L C51
2021-10-30 07:36:03 C 22 49 37.86 -43 36 00.8 V T05
2021-10-30 07:46:38 C 22 49 36.03 -43 36 06.1 V T05
2021-10-30 07:51:15 C 22 49 35.21 -43 36 08.7 V T05
2021-10-30 08:09:10 C 22 49 32.14 -43 36 17.1 V T05
2021-11-01 07:02:54 C 22 41 44.98 -43 58 41.2 V T08
2021-11-01 07:06:53 C 22 41 44.29 -43 58 42.9 V T08
2021-11-01 07:14:50 C 22 41 42.91 -43 58 45.9 V T08
2021-11-01 07:30:47 C 22 41 40.13 -43 58 53.0 V T08
2021-11-11 05:23:11 C 22 01 58.69 -45 02 32.0 V T05
2021-11-11 05:23:51 C 22 01 58.58 -45 02 31.5 V T05
2021-11-11 05:28:28 C 22 01 57.75 -45 02 32.4 V T05
2021-11-11 05:29:08 C 22 01 57.64 -45 02 32.5 V T05
2021-11-11 05:37:43 C 22 01 56.10 -45 02 33.5 V T05
2021-11-11 05:39:42 C 22 01 55.78 -45 02 33.6 V T05
2021-11-11 05:53:36 C 22 01 53.30 -45 02 35.2 V T05
2021-11-11 05:56:54 C 22 01 52.73 -45 02 35.4 V T05
2021-11-13 05:48:07 C 21 53 45.00 -45 06 43.4 V T08
2021-11-13 05:52:06 C 21 53 44.30 -45 06 43.3 V T08
2021-11-13 06:00:08 C 21 53 42.78 -45 06 43.9 V T08
2021-11-13 06:14:44 C 21 53 40.21 -45 06 43.8 V T08
2021-11-17 05:27:52 C 21 37 02.21 -45 07 34.2 V T08
2021-11-17 05:41:09 C 21 36 59.68 -45 07 32.7 V T08
2021-11-17 05:57:06 C 21 36 56.67 -45 07 31.0 V T08
2021-11-19 04:34:12 C 21 28 27.60 -45 04 25.1 V T05
2021-11-19 04:34:51 C 21 28 27.37 -45 04 25.5 V T05