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
1987-05-29 05:55:14 A 14 32 19.21 +16 33 33.8 16.5 675
1987-05-30 08:16:15 A 14 32 21.43 +15 30 57.7 675
1987-05-31 04:40:15 A 14 32 26.43 +14 44 28.4 675
1987-05-31 09:23:30 A 14 32 26.28 +14 33 54.4 675
1987-06-01 06:46:45 A 14 32 33.27 +13 47 19.4 675
1987-06-08 08:50:49 A 14 34 15.58 +08 28 23.0 568
1987-06-08 11:18:38 A 14 34 17.22 +08 24 18.2 568
1987-06-17 04:24:09 A 14 38 10.41 +03 26 12.5 B 691
1987-06-17 04:30:21 A 14 38 10.54 +03 26 04.5 B 691
1987-06-17 04:49:48 A 14 38 10.93 +03 25 41.2 B 691
1987-06-22 04:32:30 A 14 41 06.66 +01 06 43.5 18.0 675
1987-06-23 04:51:29 A 14 41 45.76 +00 40 40.3 18.0 675
1987-06-23 06:23:18 A 14 41 48.04 +00 39 02.6 B 691
1987-06-23 06:35:11 A 14 41 48.34 +00 38 50.2 B 691
1987-06-23 06:59:45 A 14 41 48.96 +00 38 24.5 B 691
1987-06-24 03:01:53 A 14 42 22.30 +00 17 24.7 A 801
1987-06-24 04:36:19 A 14 42 25.12 +00 15 50.8 688
1987-06-24 04:59:40 A 14 42 25.71 +00 15 26.5 688
1987-06-24 06:44:00 A 14 42 28.61 +00 13 37.4 707
1987-07-21 04:47:57 A 15 05 55.27 -08 12 51.5 B 691
1987-07-21 04:54:02 A 15 05 55.50 -08 12 55.8 B 691
1987-07-21 05:14:49 A 15 05 56.36 -08 13 08.4 B 691
1987-07-22 05:06:06 A 15 06 58.55 -08 27 31.9 B 691
1987-07-22 05:15:10 A 15 06 58.88 -08 27 36.1 B 691
1987-07-22 05:42:00 A 15 07 00.02 -08 27 52.7 B 691
1987-08-18 03:31:59 A 15 38 27.92 -13 48 10.5 B 691
1987-08-18 03:38:33 A 15 38 28.21 -13 48 11.9 B 691
1987-08-18 03:45:02 A 15 38 28.63 -13 48 15.9 B 691
1988-07-08 07:28:18 A 21 20 19.67 -21 12 44.0 675
1988-07-08 07:36:46 A 21 20 19.36 -21 12 46.6 675
1988-07-08 08:01:57 A 21 20 18.36 -21 12 53.9 675
1988-07-08 08:09:16 A 21 20 18.02 -21 12 56.7 675
1988-08-22 07:56:20 A 20 25 19.57 -26 13 33.8 675
1988-08-22 08:04:44 A 20 25 19.12 -26 13 35.2 675
1988-08-22 08:13:38 A 20 25 18.72 -26 13 36.5 675
1992-04-29 07:34:07 C 17 50 05.37 +32 10 43.8 z 801
1992-04-29 07:36:51 C 17 50 04.36 +32 10 37.7 z 801
1992-05-05 07:58:11 C 17 05 08.94 +26 12 17.0 z 801
1992-05-05 08:00:31 C 17 05 08.29 +26 12 11.1 z 801
1992-05-13 08:52:29 C 16 22 37.25 +18 41 59.3 657
1992-05-13 08:54:48 C 16 22 36.87 +18 41 54.3 657
1992-05-13 08:58:30 C 16 22 36.18 +18 41 46.3 657
1992-05-20 06:59:45 C 15 57 41.92 +13 12 02.6 776
1992-05-20 07:07:08 C 15 57 40.94 +13 11 49.6 776
1992-05-20 07:27:44 C 15 57 38.31 +13 11 12.0 776
1992-05-29 03:54:00 C 15 36 39.31 +07 28 48.1 z 801
1992-05-29 03:58:05 C 15 36 38.98 +07 28 42.3 z 801
1992-06-04 07:12:30 15 27 16.45 +04 14 49.2 675
1992-06-04 07:54:14 15 27 14.17 +04 13 58.8 675
1992-06-10 04:56:43 15 21 17.18 +01 34 43.4 F 711