2013 SE21

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5712614708 ± 2.00e+00
Semi-major axis (a)2.4840385902 AU ± 3.00e+00
Inclination (i)3.35267750° ± 4.00e+00
Long. of Asc. Node (Ω)19.88767377° ± 5.00e+00
Arg. of Perihelion (ω)8.74839980° ± 6.00e+00
Mean Anomaly (M)32.18743616° ± 4.98e-02
Mean Motion (n)0.2517441400°/day ± 4.56e-01
Perihelion dist (q)1.06500310 AU ± 5.13e+00
Aphelion dist (Q)3.90312890 AU ± 6.85e+00
Orbital Period3.91511660 yr ± 7.09e+00
Physical Parameters
H (abs. magnitude)23.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.294″
Uncertainty2
Orbit TypeAmor
MOID0.068181 AU
Observations Used87
Oppositions1
Arc Total2013-2013
First Observation Used
Last Observation Used2013-11-10
Observations (94)
Date Type RA Dec Mag Band Observatory
2013-10-03 15:03:40 C 01 07 33.46 -00 13 17.7 o 474
2013-10-04 09:57:40 C 01 13 35.53 +00 56 19.8 o 291
2013-10-04 09:58:26 C 01 13 36.68 +00 56 36.6 o 291
2013-10-04 09:59:11 C 01 13 36.85 +00 56 40.8 o 291
2013-10-08 10:08:33 C 01 47 29.84 +07 38 41.2 o 926
2013-10-08 10:13:14 C 01 47 31.48 +07 39 01.6 o 926
2013-10-08 10:17:52 C 01 47 33.13 +07 39 22.0 o 926
2013-10-08 21:30:55 C 01 51 54.99 +08 28 39.2 q 246
2013-10-08 21:31:22 C 01 51 55.17 +08 28 41.3 q 246
2013-10-08 21:31:48 C 01 51 55.33 +08 28 42.9 q 246
2013-10-08 21:32:13 C 01 51 55.45 +08 28 44.8 q 246
2013-10-08 21:32:45 C 01 51 55.69 +08 28 48.3 q 246
2013-10-08 21:33:24 C 01 51 55.94 +08 28 50.8 q 246
2013-10-08 21:33:49 C 01 51 56.06 +08 28 52.4 q 246
2013-10-08 21:34:11 C 01 51 56.17 +08 28 53.9 q 246
2013-10-08 21:36:19 C 01 51 56.97 +08 29 03.8 q 246
2013-10-08 21:37:36 C 01 51 57.44 +08 29 09.8 q 246
2013-10-11 08:07:36 C 02 14 56.97 +12 52 31.6 q 703
2013-10-11 08:14:52 C 02 14 59.67 +12 53 04.1 q 703
2013-10-11 08:22:10 C 02 15 02.56 +12 53 35.1 q 703
2013-10-11 08:29:23 C 02 15 05.17 +12 54 09.0 q 703
2013-10-13 11:53:09 C 02 36 04.10 +16 41 46.6 o 291
2013-10-13 11:53:56 C 02 36 04.40 +16 41 49.7 o 291
2013-10-13 11:54:42 C 02 36 04.70 +16 41 53.1 o 291
2013-10-14 07:23:41 C 02 44 14.90 +18 05 22.2 u H21
2013-10-14 07:31:40 C 02 44 17.99 +18 05 55.6 u H21
2013-10-14 07:39:04 C 02 44 20.87 +18 06 27.1 u H21
2013-10-15 07:13:39 C 02 54 13.10 +19 44 43.1 o 691
2013-10-15 07:39:10 C 02 54 22.99 +19 46 28.4 o 691
2013-10-15 08:04:40 C 02 54 32.83 +19 48 12.6 o 691
2013-10-16 07:25:01 C 03 04 15.37 +21 21 15.6 o 926
2013-10-16 07:29:02 C 03 04 16.95 +21 21 31.2 o 926
2013-10-16 07:34:30 C 03 04 19.05 +21 21 52.9 o 926
2013-10-17 23:14:04 C 03 20 35.72 +23 49 06.6 t 204
2013-10-17 23:34:22 C 03 20 43.52 +23 50 20.0 t 204
2013-10-17 23:54:37 C 03 20 51.29 +23 51 32.5 t 204
2013-10-24 12:28:23 C 04 19 10.18 +31 09 41.4 o 291
2013-10-24 12:29:33 C 04 19 10.52 +31 09 43.9 o 291
2013-10-24 12:30:42 C 04 19 10.94 +31 09 45.9 o 291
2013-11-08 07:52:08 C 05 39 15.29 +37 25 14.5 u H21
2013-11-08 08:05:49 C 05 39 16.83 +37 25 20.2 u H21
2013-11-10 07:30:39 C 05 45 01.82 +37 42 16.6 u H21
2013-11-10 07:49:00 C 05 45 03.59 +37 42 22.6 u H21
2013-11-10 08:07:35 C 05 45 05.30 +37 42 28.8 u H21