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
2002-05-07 09:19:40 C 18 05 22.02 -00 06 14.5 c 704
2002-05-15 07:24:17 C 17 41 33.41 -01 19 03.2 16.3 c 704
2002-05-15 07:45:11 C 17 41 30.70 -01 19 12.1 16.5 c 704
2002-05-15 08:07:03 C 17 41 27.85 -01 19 21.4 16.5 c 704
2002-05-15 08:28:33 C 17 41 25.07 -01 19 30.6 16.5 c 704
2002-05-15 08:49:23 C 17 41 22.37 -01 19 38.9 16.9 c 704
2002-05-16 01:47:28 C 17 39 13.26 -01 26 55.0 c 198
2002-05-16 01:50:07 C 17 39 12.92 -01 26 56.0 c 198
2002-05-16 01:59:14 C 17 39 11.78 -01 26 59.6 c 198
2002-05-21 22:14:37 C 17 21 40.26 -02 30 06.8 c 151
2002-05-21 22:16:44 C 17 21 39.98 -02 30 08.0 c 151
2002-05-21 22:19:13 C 17 21 39.69 -02 30 08.8 c 151
2002-05-21 22:21:00 C 17 21 39.43 -02 30 09.9 c 151
2002-05-30 07:32:08 C 16 58 16.60 -04 07 57.2 m 333
2002-05-30 07:41:33 C 16 58 15.55 -04 08 01.6 m 333
2002-05-30 07:50:12 C 16 58 14.55 -04 08 05.0 m 333
2002-06-04 05:45:25 C 16 46 06.56 -05 06 52.4 17.6 c 704
2002-06-04 06:05:21 C 16 46 04.50 -05 07 03.3 16.7 c 704
2002-06-04 06:25:12 C 16 46 02.50 -05 07 12.9 16.8 c 704
2002-06-04 06:45:06 C 16 46 00.52 -05 07 22.8 17.1 c 704
2002-06-05 13:32:20 C 16 43 03.57 -05 22 39.9 17.7 c 608
2002-06-05 13:47:34 C 16 43 02.12 -05 22 47.3 17.6 c 608
2002-06-05 14:03:22 C 16 43 00.61 -05 22 55.2 17.5 c 608
2002-06-07 05:54:04 C 16 39 22.31 -05 42 44.8 16.8 c 704
2002-06-07 06:13:56 C 16 39 20.44 -05 42 54.1 16.8 c 704
2002-06-07 06:33:57 C 16 39 18.60 -05 43 03.2 16.9 c 704
2002-06-10 05:53:18 C 16 33 12.64 -06 18 12.0 17.8 c 704
2002-06-10 06:13:25 C 16 33 10.93 -06 18 21.6 17.9 c 704
2002-06-10 06:33:27 C 16 33 09.23 -06 18 31.8 17.8 c 704
2002-06-10 06:45:10 C 16 33 08.36 -06 18 37.7 16.6 c 644
2002-06-10 06:53:30 C 16 33 07.56 -06 18 41.7 18.0 c 704
2002-06-10 07:13:34 C 16 33 05.88 -06 18 51.7 17.8 c 704
2002-06-10 07:15:22 C 16 33 05.82 -06 18 52.3 16.7 c 644
2002-06-10 07:45:29 C 16 33 03.43 -06 19 05.2 15.5 c 644
2002-06-11 07:58:44 C 16 31 06.84 -06 30 55.6 d 291
2002-06-11 08:28:46 C 16 31 04.43 -06 31 11.1 d 291
2002-06-11 08:57:50 C 16 31 02.07 -06 31 25.1 d 291
2002-06-14 05:45:54 C 16 25 54.10 -07 04 40.4 17.9 c 704
2002-06-14 06:05:57 C 16 25 52.66 -07 04 48.9 18.8 c 704
2002-06-14 06:25:46 C 16 25 51.17 -07 04 59.7 17.7 c 704
2002-06-14 06:45:36 C 16 25 49.74 -07 05 09.0 17.9 c 704
2002-06-14 07:05:26 C 16 25 48.26 -07 05 19.0 17.7 c 704
2002-06-17 21:28:08 C 16 20 06.91 -07 46 15.7 c 599
2002-06-17 21:43:12 C 16 20 05.95 -07 46 23.0 c 599
2002-06-17 22:04:16 C 16 20 04.62 -07 46 32.5 c 599
2002-06-17 22:19:43 C 16 20 03.65 -07 46 39.9 c 599
2002-07-03 05:19:16 C 16 04 31.57 -10 28 20.7 18.2 c 644
2002-07-03 05:49:34 C 16 04 30.76 -10 28 33.3 18.2 c 644
2002-07-03 06:19:57 C 16 04 29.94 -10 28 45.8 18.2 c 644
2002-07-07 05:40:37 C 16 02 28.81 -11 07 28.4 d 291