339714 (2005 ST1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3709841354 ± 1.99e-08
Semi-major axis (a)1.4512411703 AU ± 5.32e-10
Inclination (i)20.22850060° ± 9.76e-06
Long. of Asc. Node (Ω)7.54321333° ± 3.39e-06
Arg. of Perihelion (ω)80.69958538° ± 8.58e-06
Mean Anomaly (M)144.67013051° ± 4.45e-06
Mean Motion (n)0.5637712055°/day ± 3.10e-10
Perihelion dist (q)0.91285372 AU ± 2.89e-08
Aphelion dist (Q)1.98962862 AU ± 2.89e-08
Orbital Period1.74827354 yr ± 9.61e-10
Physical Parameters
H (abs. magnitude)20.35
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.446″
Uncertainty0
Orbit TypeApollo
MOID0.127096 AU
Observations Used480
Oppositions12
Arc Total1991-2020
First Observation Used1991-10-02
Last Observation Used2020-04-24
Observations (562)
Date Type RA Dec Mag Band Observatory
1991-10-02 03:44:39 C 23 25 29.89 -09 59 04.6 a 691
1991-10-02 04:06:47 C 23 25 24.58 -09 58 11.1 a 691
1991-10-02 04:26:07 C 23 25 19.91 -09 57 25.1 a 691
1998-09-27 06:39:54 C 00 12 55.51 -08 58 46.1 a 699
1998-09-27 07:15:38 C 00 12 48.20 -08 57 28.1 a 699
1998-09-27 07:51:25 C 00 12 40.95 -08 56 10.6 a 699
1999-03-23 07:40:47 C 13 07 16.77 -04 14 39.8 b 703
1999-03-23 08:03:35 C 13 07 12.72 -04 15 10.9 b 703
1999-03-23 08:28:00 C 13 07 08.41 -04 15 43.3 b 703
1999-03-23 08:51:01 C 13 07 04.31 -04 16 16.6 b 703
1999-03-23 09:14:57 C 13 07 00.17 -04 16 52.7 b 703
2005-09-14 08:35:06 C 01 12 28.00 -12 47 50.7 r 703
2005-09-14 08:44:30 C 01 12 27.25 -12 47 39.9 r 703
2005-09-14 08:53:58 C 01 12 26.46 -12 47 28.9 r 703
2005-09-14 09:03:27 C 01 12 25.77 -12 47 18.6 r 703
2005-09-24 07:45:02 C 00 47 01.14 -06 25 58.2 r 703
2005-09-24 07:55:49 C 00 46 59.44 -06 25 34.4 r 703
2005-09-24 08:06:37 C 00 46 57.72 -06 25 10.7 r 703
2005-09-24 08:17:27 C 00 46 56.02 -06 24 47.0 r 703
2005-09-24 10:33:50 C 00 46 34.60 -06 19 45.9 r 703
2005-09-24 10:45:54 C 00 46 32.70 -06 19 19.0 r 703
2005-09-24 10:58:02 C 00 46 30.86 -06 18 51.8 r 703
2005-09-24 11:10:14 C 00 46 29.17 -06 18 26.3 r 703
2005-09-24 23:39:40 C 00 44 37.73 -05 50 23.7 r A13
2005-09-24 23:40:50 C 00 44 37.49 -05 50 20.8 r A13
2005-09-24 23:41:24 C 00 44 37.41 -05 50 19.1 r A13
2005-09-24 23:42:00 C 00 44 37.31 -05 50 18.3 r A13
2005-09-24 23:42:43 C 00 44 37.18 -05 50 16.3 r A13
2005-09-25 01:26:15 C 00 44 20.20 -05 46 19.3 r 118
2005-09-25 01:29:35 C 00 44 19.68 -05 46 11.8 r 118
2005-09-25 01:34:38 C 00 44 18.86 -05 45 59.8 r 118
2005-09-25 01:36:18 C 00 44 18.58 -05 45 56.3 r 118
2005-09-25 01:37:57 C 00 44 18.34 -05 45 52.7 r 118
2005-09-25 02:25:09 C 00 44 13.48 -05 44 00.1 o 932
2005-09-25 02:41:14 C 00 44 10.89 -05 43 23.0 o 932
2005-09-25 02:47:14 C 00 44 09.92 -05 43 09.5 o 932
2005-09-25 03:36:16 C 00 44 02.94 -05 41 11.7 o H06
2005-09-25 03:37:45 C 00 44 00.69 -05 40 33.5 r I77
2005-09-25 03:41:57 C 00 44 02.11 -05 40 58.0 o H06
2005-09-25 03:47:45 C 00 44 01.15 -05 40 45.6 o H06
2005-09-25 03:48:39 C 00 43 58.81 -05 40 08.0 r I77
2005-09-25 03:56:50 C 00 43 57.45 -05 39 49.2 r I77
2005-09-25 06:07:57 C 00 43 38.38 -05 35 17.6 c 651
2005-09-25 06:12:05 C 00 43 37.69 -05 35 08.1 c 651
2005-09-25 06:16:13 C 00 43 37.01 -05 34 58.4 c 651
2005-09-25 06:53:34 C 00 43 31.12 -05 33 32.6 c 673
2005-09-25 07:00:25 C 00 43 29.98 -05 33 16.8 c 673
2005-09-25 07:02:23 C 00 43 29.38 -05 33 11.4 r 703
2005-09-25 07:07:45 C 00 43 28.77 -05 32 59.5 c 673
2005-09-25 07:10:55 C 00 43 27.91 -05 32 51.7 r 703