1998 SU4

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5804568307 ± 2.22e-06
Semi-major axis (a)1.1479069440 AU ± 2.61e-08
Inclination (i)23.14380230° ± 1.64e-04
Long. of Asc. Node (Ω)350.55508547° ± 2.27e-05
Arg. of Perihelion (ω)241.88207152° ± 2.36e-04
Mean Anomaly (M)85.75302351° ± 9.49e-05
Mean Motion (n)0.8014053763°/day ± 2.73e-08
Perihelion dist (q)0.48159652 AU ± 2.55e-06
Aphelion dist (Q)1.81421737 AU ± 2.55e-06
Orbital Period1.22987231 yr ± 4.19e-08
NGA Modelr2
A2-6.02677485e-14 ± 2.20e-14 AU/d²
Physical Parameters
H (abs. magnitude)21.41
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.414″
Uncertainty0
Orbit TypeApollo
MOID0.018894 AU
Observations Used94
Oppositions5
Arc Total1998-2025
First Observation Used1998-09-19
Last Observation Used2025-11-11
Observations (101)
Date Type RA Dec Mag Band Observatory
1998-09-19 06:01:32 C 23 02 19.24 +14 53 29.1 18.2 a 704
1998-09-19 06:31:57 C 23 02 07.40 +14 53 30.2 18.8 a 704
1998-09-19 07:02:25 C 23 01 55.58 +14 53 30.1 18.4 a 704
1998-09-19 23:27:02 C 22 56 12.64 +14 53 28.6 046
1998-09-19 23:28:13 C 22 56 12.24 +14 53 28.9 046
1998-09-19 23:29:30 C 22 56 11.82 +14 53 29.2 046
1998-09-19 23:30:33 C 22 56 11.43 +14 53 28.9 046
1998-09-19 23:31:42 C 22 56 11.09 +14 53 29.5 046
1998-09-20 01:44:43 C 22 55 26.59 +14 53 22.0 557
1998-09-20 01:46:04 C 22 55 26.14 +14 53 22.0 557
1998-09-20 01:47:24 C 22 55 25.69 +14 53 21.7 557
1998-09-20 01:48:45 C 22 55 25.25 +14 53 21.5 557
1998-09-20 12:27:10 C 22 52 10.99 +14 54 26.2 b 426
1998-09-20 12:30:58 C 22 52 09.78 +14 54 25.7 b 426
1998-09-20 12:34:43 C 22 52 08.60 +14 54 26.5 b 426
1998-09-20 12:38:00 C 22 52 07.59 +14 54 27.1 b 426
1998-09-20 13:02:28 C 22 51 59.51 +14 53 21.5 z 900
1998-09-20 13:08:50 C 22 51 57.73 +14 53 19.1 z 900
1998-09-20 22:18:03 C 22 49 18.95 +14 52 35.5 557
1998-09-20 22:21:44 C 22 49 17.94 +14 52 35.4 557
1998-09-21 06:42:10 C 22 47 01.99 +14 52 15.7 19.9 a 704
1998-09-21 07:14:11 C 22 46 53.25 +14 52 11.7 19.3 a 704
1998-09-21 07:46:06 C 22 46 44.52 +14 52 08.3 18.9 a 704
1998-09-21 08:30:49 C 22 46 32.24 +14 52 04.7 19.2 a 704
1998-09-21 19:13:16 C 22 43 54.95 +14 51 00.6 z 596
1998-09-21 19:23:51 C 22 43 52.27 +14 51 00.1 z 596
1998-09-21 19:46:05 C 22 43 46.73 +14 50 57.7 z 596
1998-09-21 20:07:40 C 22 43 41.00 +14 50 50.0 557
1998-09-21 20:09:30 C 22 43 40.55 +14 50 49.9 557
1998-09-21 20:11:22 C 22 43 40.07 +14 50 49.5 557
1998-09-23 03:51:17 C 22 36 47.26 +14 47 25.3 20.1 a 704
1998-09-23 04:25:12 C 22 36 40.39 +14 47 22.0 19.9 a 704
1998-09-23 04:59:54 C 22 36 33.22 +14 47 16.4 19.8 a 704
1998-09-23 05:33:38 C 22 36 26.04 +14 47 13.1 19.8 a 704
2014-09-16 16:29:00 C 23 59 19.80 +19 43 43.4 o C94
2014-09-16 16:30:49 C 23 59 18.64 +19 43 42.5 o C94
2014-09-16 16:32:38 C 23 59 17.50 +19 43 42.4 o C94
2014-09-16 17:40:51 C 23 58 32.59 +19 43 24.1 o C94
2014-09-16 17:42:43 C 23 58 31.58 +19 43 23.4 o C94
2014-09-16 17:44:33 C 23 58 30.38 +19 43 23.3 o C94
2014-09-18 16:35:09 C 23 32 53.90 +19 24 13.7 o C94
2014-09-18 16:36:59 C 23 32 53.08 +19 24 12.6 o C94
2014-09-18 16:38:52 C 23 32 52.23 +19 24 12.0 o C94
2014-09-18 18:11:42 C 23 32 11.55 +19 23 22.1 t L04
2014-09-18 18:19:35 C 23 32 07.89 +19 23 18.5 t L04
2014-09-18 18:26:23 C 23 32 04.67 +19 23 15.3 t L04
2014-09-18 18:34:20 C 23 32 00.95 +19 23 11.8 t L04
2014-09-18 18:57:34 C 23 31 50.31 +19 22 56.0 q K61
2014-09-18 19:06:16 C 23 31 46.24 +19 22 52.4 q K61
2014-09-18 19:07:08 C 23 31 45.78 +19 22 52.2 q K61