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
2021-08-29 12:08:23 C 01 07 54.29 -16 00 57.2 V T08
2021-08-29 12:18:06 C 01 07 54.18 -16 01 05.2 V T08
2021-08-29 12:23:26 C 01 07 54.14 -16 01 10.0 V T08
2021-08-29 12:30:43 C 01 07 54.07 -16 01 15.9 V T08
2021-08-30 11:52:29 C 01 07 42.636 -16 21 04.58 U F52
2021-08-30 12:09:58 C 01 07 42.41 -16 21 19.5 V T08
2021-08-30 12:11:03 C 01 07 42.417 -16 21 20.57 U F52
2021-08-30 12:13:56 C 01 07 42.37 -16 21 23.1 V T08
2021-08-30 12:17:55 C 01 07 42.32 -16 21 26.4 V T08
2021-08-30 12:29:38 C 01 07 42.196 -16 21 36.63 U F52
2021-08-30 12:48:14 C 01 07 41.96 -16 21 52.7 V T08
2021-08-30 12:48:21 C 01 07 41.970 -16 21 52.75 U F52
2021-09-04 12:03:23 C 01 05 59.65 -18 11 28.3 V T05
2021-09-04 12:23:13 C 01 05 59.22 -18 11 47.8 V T05
2021-09-04 12:26:31 C 01 05 59.14 -18 11 51.0 V T05
2021-09-04 12:30:29 C 01 05 59.05 -18 11 54.9 V T05
2021-09-06 13:02:01 C 01 04 54.87 -19 00 33.8 V T08
2021-09-06 13:41:10 C 01 04 53.78 -19 01 14.0 V T08
2021-09-06 14:22:11 C 01 04 52.68 -19 01 55.8 V T08
2021-09-06 14:57:52 C 01 04 51.71 -19 02 32.2 V T08
2021-09-07 04:35:52 C 01 04 31.60 -19 16 32.7 q Y00
2021-09-07 04:39:27 C 01 04 31.50 -19 16 35.9 q Y00
2021-09-07 04:43:02 C 01 04 31.38 -19 16 41.1 q Y00
2021-09-07 07:40:22 C 01 04 26.99 -19 19 53.7 V 703
2021-09-07 07:47:59 C 01 04 26.77 -19 20 01.7 V 703
2021-09-07 07:55:35 C 01 04 26.57 -19 20 09.9 V 703
2021-09-07 08:03:12 C 01 04 26.32 -19 20 17.8 V 703
2021-09-08 11:35:21 C 01 03 40.56 -19 49 25.5 V T05
2021-09-08 11:39:22 C 01 03 40.43 -19 49 30.1 V T05
2021-09-08 12:10:53 C 01 03 39.41 -19 50 03.9 V T05
2021-09-08 12:15:45 C 01 03 39.26 -19 50 09.2 V T05
2021-09-09 08:02:41 C 01 03 03.61 -20 11 35.7 V 703
2021-09-09 08:09:56 C 01 03 03.36 -20 11 43.6 V 703
2021-09-09 08:17:11 C 01 03 03.11 -20 11 51.2 V 703
2021-09-09 08:24:26 C 01 03 02.87 -20 11 59.1 V 703
2021-09-10 11:47:57 C 01 02 08.992 -20 42 14.45 U F51
2021-09-10 12:04:39 C 01 02 08.365 -20 42 33.12 U F51
2021-09-10 12:21:21 C 01 02 07.737 -20 42 51.83 U F51
2021-09-14 10:58:26 C 00 58 23.02 -22 32 50.5 V T08
2021-09-14 11:03:05 C 00 58 22.81 -22 32 55.9 V T08
2021-09-14 11:07:04 C 00 58 22.62 -22 33 01.0 V T08
2021-09-14 11:15:03 C 00 58 22.21 -22 33 10.5 V T08
2021-09-23 10:38:08 C 00 45 40.666 -27 10 08.83 U F51
2021-09-23 10:54:26 C 00 45 39.401 -27 10 30.94 U F51
2021-09-23 11:10:42 C 00 45 38.134 -27 10 52.90 U F51
2021-09-24 10:12:25 C 00 43 54.32 -27 42 09.9 V T05
2021-09-24 10:17:04 C 00 43 53.95 -27 42 16.3 V T05
2021-09-24 10:21:01 C 00 43 53.63 -27 42 21.4 V T05
2021-09-24 10:28:55 C 00 43 52.98 -27 42 32.5 V T05
2021-09-24 13:55:49 C 00 43 36.64 -27 47 01.2 q E89