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
1992-07-02 02:28:03 C 15 16 22.29 -05 45 02.0 z 801
1992-07-02 02:51:16 C 15 16 22.45 -05 45 18.0 z 801
1993-07-31 15:34:36 C 21 00 13.21 -23 57 46.4 413
1993-07-31 15:41:25 C 21 00 12.89 -23 57 48.0 413
1995-06-28 11:09:43 C 19 42 11.15 -21 09 33.9 c 608
1995-06-28 12:08:53 C 19 42 07.64 -21 09 48.2 c 608
1995-06-28 13:07:26 C 19 42 04.27 -21 10 00.8 c 608
1996-06-09 18:18:20 C 23 30 44.16 -11 49 19.5 413
1996-06-09 18:23:02 C 23 30 44.34 -11 49 20.1 413
1996-08-02 10:35:48 C 23 46 36.56 -16 14 01.2 c 608
1996-08-02 11:37:50 C 23 46 35.42 -16 14 31.5 c 608
1996-08-16 12:24:12 C 23 36 52.90 -19 22 35.7 c 608
1996-08-16 12:50:41 C 23 36 51.78 -19 22 52.4 c 608
1996-08-20 01:26:04 C 23 33 09.89 -20 16 54.0 z 046
1996-08-20 01:28:43 C 23 33 09.71 -20 16 55.2 z 046
1996-08-20 02:09:24 C 23 33 07.78 -20 17 22.2 z 046
1996-08-20 02:12:52 C 23 33 07.58 -20 17 24.5 z 046
1996-09-07 14:31:36 C 23 05 51.73 -25 13 36.7 381
1996-09-07 14:34:58 C 23 05 51.47 -25 13 38.9 381
1997-04-21 01:22:29 C 18 50 13.32 +12 11 02.7 z 611
1997-04-28 06:22:00 C 18 19 24.16 +10 28 46.3 z 861
1997-04-28 06:32:30 C 18 19 22.32 +10 28 39.9 z 861
1997-04-28 06:39:43 C 18 19 20.97 +10 28 36.0 z 861
1997-05-01 23:35:33 C 18 03 37.80 +09 28 15.8 z 557
1997-05-01 23:55:45 C 18 03 34.19 +09 28 01.8 z 557
1997-05-02 00:45:56 C 18 03 25.19 +09 27 26.8 z 557
1997-05-02 00:59:47 C 18 03 22.70 +09 27 17.3 z 557
1997-05-02 01:59:38 C 18 03 11.92 +09 26 35.5 z 557
1997-05-02 02:24:58 C 18 03 07.35 +09 26 17.6 z 557
1997-05-02 23:50:27 C 17 59 22.27 +09 11 07.3 z 557
1997-05-03 00:15:15 C 17 59 17.85 +09 10 49.8 z 557
1997-05-03 00:40:41 C 17 59 13.30 +09 10 31.7 z 557
1997-05-03 00:54:39 C 17 59 10.76 +09 10 22.4 15.9 z 629
1997-05-03 00:56:30 C 17 59 10.41 +09 10 21.7 16.3 z 629
1997-05-03 01:07:52 C 17 59 08.34 +09 10 13.6 15.9 z 629
1997-05-03 01:12:45 C 17 59 07.51 +09 10 10.0 16.3 z 629
1997-05-03 01:15:12 C 17 59 07.01 +09 10 08.6 16.0 z 629
1997-05-03 01:40:09 C 17 59 02.65 +09 09 49.3 z 557
1997-05-03 01:54:06 C 17 59 00.15 +09 09 39.4 z 557
1997-05-04 06:57:41 C 17 53 55.39 +08 49 01.5 z 861
1997-05-04 07:04:35 C 17 53 54.16 +08 48 56.2 z 861
1997-05-04 22:50:07 C 17 51 10.93 +08 36 52.6 z 557
1997-05-04 23:57:59 C 17 50 58.95 +08 36 02.7 z 557
1997-05-05 00:29:26 C 17 50 53.39 +08 35 39.5 z 557
1997-05-05 01:35:31 C 17 50 41.68 +08 34 50.7 z 557
1997-05-05 23:34:10 C 17 46 54.43 +08 18 23.8 z 557
1997-05-06 00:28:17 C 17 46 44.93 +08 17 43.2 z 557
1997-05-06 01:11:28 C 17 46 37.33 +08 17 10.7 z 557
1997-05-06 02:18:55 C 17 46 25.47 +08 16 19.9 z 557
1997-05-09 22:23:57 C 17 30 52.20 +07 04 41.7 z 557