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
1997-07-01 23:17:02 C 15 42 50.25 -08 13 19.4 z 118
1997-07-01 23:26:25 C 15 42 50.16 -08 13 24.1 z 118
1997-07-24 07:53:18 C 15 45 43.71 -12 21 42.1 c 608
1997-07-24 08:52:03 C 15 45 44.79 -12 22 05.8 c 608
1997-08-08 08:00:07 C 15 55 17.07 -14 37 54.1 c 608
1997-08-08 09:00:03 C 15 55 18.97 -14 38 14.9 c 608
2001-08-11 14:17:20 C 23 56 11.21 -17 04 04.3 20.5 c 608
2001-08-11 14:32:54 C 23 56 10.80 -17 04 14.3 20.8 c 608
2001-08-11 14:47:49 C 23 56 10.44 -17 04 22.2 20.1 c 608
2001-08-19 08:04:22 C 23 50 19.26 -18 59 54.9 18.5 c 704
2001-08-19 08:40:46 C 23 50 17.72 -19 00 19.2 19.1 c 704
2001-08-19 08:59:05 C 23 50 16.98 -19 00 31.7 19.4 c 704
2001-08-19 09:17:21 C 23 50 16.23 -19 00 43.3 19.1 c 704
2001-08-23 08:52:30 C 23 46 13.63 -20 05 54.8 20.1 i 608
2001-08-23 09:07:55 C 23 46 12.92 -20 06 05.9 19.8 i 608
2001-08-23 09:23:17 C 23 46 12.21 -20 06 16.6 20.2 i 608
2001-08-23 13:17:19 C 23 46 00.89 -20 09 01.0 20.2 i 608
2001-08-23 13:33:08 C 23 46 00.09 -20 09 12.3 19.7 i 608
2001-08-23 13:48:04 C 23 45 59.35 -20 09 22.1 19.9 i 608
2001-08-24 13:12:57 C 23 44 53.05 -20 25 49.3 19.6 c 608
2001-08-24 13:27:45 C 23 44 52.34 -20 25 59.7 19.7 c 608
2001-08-24 13:42:39 C 23 44 51.54 -20 26 10.5 20.0 c 608
2001-09-09 12:54:00 C 23 21 01.55 -25 04 45.2 19.2 c 608
2001-09-09 13:09:52 C 23 21 00.32 -25 04 56.6 19.1 c 608
2001-09-09 13:25:55 C 23 20 59.09 -25 05 08.2 19.3 c 608
2001-09-11 08:15:31 C 23 17 44.53 -25 35 16.0 18.6 c 704
2001-09-11 08:36:43 C 23 17 42.82 -25 35 31.3 18.8 c 704
2001-09-11 08:57:49 C 23 17 41.13 -25 35 46.3 18.7 c 704
2001-09-11 09:18:52 C 23 17 39.50 -25 36 01.1 19.2 c 704
2001-09-11 09:39:55 C 23 17 37.80 -25 36 16.8 18.4 c 704
2001-10-14 04:27:57 C 22 16 54.61 -31 06 45.4 18.6 c 644
2001-10-14 04:58:29 C 22 16 52.73 -31 06 48.0 19.0 c 644
2001-10-14 05:30:53 C 22 16 50.74 -31 06 50.8 18.9 c 644
2001-11-07 01:43:14 C 21 58 10.85 -30 07 20.9 19.0 c 704
2001-11-07 02:04:24 C 21 58 10.73 -30 07 15.5 19.4 c 704
2001-11-07 02:25:55 C 21 58 10.50 -30 07 08.5 19.7 c 704
2001-11-07 02:46:51 C 21 58 10.43 -30 07 04.3 19.1 c 704
2001-11-07 03:07:45 C 21 58 10.24 -30 06 57.2 19.5 c 704
2001-11-16 01:44:57 C 21 58 51.58 -29 01 31.3 c 699
2001-11-16 02:01:48 C 21 58 51.75 -29 01 25.2 c 699
2001-11-16 02:18:40 C 21 58 51.88 -29 01 19.3 c 699
2001-11-16 02:35:34 C 21 58 52.11 -29 01 12.5 c 699
2002-03-27 12:36:25 C 19 34 06.30 +02 50 45.4 c 670
2002-03-27 12:40:01 C 19 34 06.07 +02 50 44.5 c 670
2002-05-06 06:58:00 C 18 08 34.35 +00 02 53.8 808
2002-05-06 07:25:15 C 18 08 31.04 +00 02 46.6 808
2002-05-07 08:08:56 C 18 05 30.94 -00 05 50.4 c 704
2002-05-07 08:26:36 C 18 05 28.70 -00 05 56.3 c 704
2002-05-07 08:44:18 C 18 05 26.48 -00 06 02.8 c 704
2002-05-07 09:01:59 C 18 05 24.26 -00 06 08.1 c 704