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
2021-09-24 14:04:06 C 00 43 35.95 -27 47 12.2 q E89
2021-09-24 14:12:09 C 00 43 35.34 -27 47 23.4 q E89
2021-09-24 14:20:06 C 00 43 34.67 -27 47 34.0 q E89
2021-09-26 10:15:36 C 00 40 02.21 -28 48 05.1 V T08
2021-09-26 10:18:15 C 00 40 02.00 -28 48 08.5 V T08
2021-09-26 11:08:44 C 00 39 57.52 -28 49 18.2 V T08
2021-09-26 11:38:27 C 00 39 54.90 -28 49 58.9 V T08
2021-09-28 11:00:07 C 00 35 45.59 -29 55 32.8 V T05
2021-09-28 11:04:44 C 00 35 45.14 -29 55 39.4 V T05
2021-09-28 11:18:30 C 00 35 43.82 -29 55 58.3 V T05
2021-09-28 12:09:20 C 00 35 38.96 -29 57 08.4 V T05
2021-09-30 08:50:29 C 00 31 25.392 -30 59 11.09 U F52
2021-09-30 09:06:04 C 00 31 23.784 -30 59 32.88 U F52
2021-09-30 09:21:36 C 00 31 22.191 -30 59 54.54 U F52
2021-09-30 09:37:10 C 00 31 20.584 -31 00 16.32 U F52
2021-09-30 11:44:31 C 00 31 07.41 -31 03 12.3 V T08
2021-09-30 11:49:11 C 00 31 06.92 -31 03 19.0 V T08
2021-09-30 12:03:45 C 00 31 05.44 -31 03 38.9 V T08
2021-09-30 12:44:25 C 00 31 01.25 -31 04 34.7 V T08
2021-10-01 01:05:33 C 00 29 48.43 -31 21 34.2 q Y00
2021-10-01 01:09:22 C 00 29 48.05 -31 21 39.0 q Y00
2021-10-01 01:13:37 C 00 29 47.57 -31 21 45.4 q Y00
2021-10-01 03:44:30 C 00 29 31.72 -31 25 15.3 q X74
2021-10-01 03:50:38 C 00 29 31.08 -31 25 23.7 q X74
2021-10-01 03:57:16 C 00 29 30.37 -31 25 32.9 q X74
2021-10-01 03:58:12 C 00 29 30.27 -31 25 34.4 q X74
2021-10-01 04:04:16 C 00 29 29.62 -31 25 42.4 q X74
2021-10-01 04:10:56 C 00 29 28.92 -31 25 51.7 q X74
2021-10-02 00:44:23 C 00 27 23.05 -31 54 14.0 q 834
2021-10-02 01:23:25 C 00 27 18.80 -31 55 08.6 q 834
2021-10-02 09:21:26 C 00 26 28.39 -32 06 21.8 V T05
2021-10-02 09:24:04 C 00 26 28.10 -32 06 25.5 V T05
2021-10-02 09:32:00 C 00 26 27.22 -32 06 36.5 V T05
2021-10-02 09:59:29 C 00 26 24.18 -32 07 14.5 V T05
2021-10-04 10:02:09 C 00 21 08.88 -33 13 07.1 V T08
2021-10-04 10:51:50 C 00 21 03.00 -33 14 14.5 V T08
2021-10-04 10:56:29 C 00 21 02.46 -33 14 20.7 V T08
2021-10-04 11:07:07 C 00 21 01.20 -33 14 35.1 V T08
2021-10-06 00:36:07 C 00 16 41.60 -34 05 03.6 q Y00
2021-10-06 00:39:57 C 00 16 41.09 -34 05 09.3 q Y00
2021-10-06 00:43:37 C 00 16 40.57 -34 05 15.6 q Y00
2021-10-06 10:31:11 C 00 15 29.78 -34 18 29.9 V T05
2021-10-06 10:35:53 C 00 15 29.18 -34 18 36.3 V T05
2021-10-06 10:44:27 C 00 15 28.11 -34 18 47.5 V T05
2021-10-06 11:14:47 C 00 15 24.30 -34 19 27.7 V T05
2021-10-14 00:45:06 C 23 51 24.67 -38 06 20.8 q Y00
2021-10-14 00:48:47 C 23 51 24.03 -38 06 26.3 q Y00
2021-10-14 00:53:07 C 23 51 23.38 -38 06 30.9 q Y00
2021-10-14 09:24:41 C 23 50 09.43 -38 16 24.6 V T05
2021-10-14 09:29:18 C 23 50 08.74 -38 16 29.8 V T05