621911 (2011 SB16)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7998161513 ± 4.99e-08
Semi-major axis (a)2.5272608081 AU ± 2.18e-08
Inclination (i)6.88498616° ± 1.01e-05
Long. of Asc. Node (Ω)311.59027883° ± 8.35e-05
Arg. of Perihelion (ω)177.70320238° ± 8.37e-05
Mean Anomaly (M)159.68737304° ± 1.71e-05
Mean Motion (n)0.2453223874°/day ± 3.17e-09
Perihelion dist (q)0.50591680 AU ± 1.26e-07
Aphelion dist (Q)4.54860482 AU ± 1.32e-07
Orbital Period4.01767769 yr ± 5.19e-08
Physical Parameters
H (abs. magnitude)18.83
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.241″
Uncertainty0
Orbit TypeApollo
MOID0.118158 AU
Observations Used106
Oppositions9
Arc Total2011-2023
First Observation Used2011-09-19
Last Observation Used2023-10-17
Observations (111)
Date Type RA Dec Mag Band Observatory
2015-10-03 09:12:46 C 22 36 11.161 +00 34 36.10 L F51
2015-10-03 09:30:02 C 22 36 09.773 +00 34 28.59 L F51
2015-10-03 09:47:17 C 22 36 08.393 +00 34 21.45 L F51
2015-10-16 06:19:41 C 22 13 54.278 -01 33 45.18 L F51
2015-10-16 06:37:05 C 22 13 53.124 -01 33 51.91 L F51
2015-10-16 06:54:31 C 22 13 51.974 -01 33 58.66 L F51
2015-10-16 07:11:59 C 22 13 50.828 -01 34 05.65 L F51
2015-11-01 05:53:18 C 21 54 49.166 -03 42 12.02 L F51
2015-11-01 06:10:42 C 21 54 48.531 -03 42 16.69 L F51
2015-11-01 06:28:08 C 21 54 47.893 -03 42 21.29 L F51
2015-11-01 06:45:31 C 21 54 47.252 -03 42 26.13 L F51
2015-11-02 05:00:06 C 21 54 02.448 -03 48 17.58 L F51
2015-11-02 05:20:12 C 21 54 01.738 -03 48 22.71 L F51
2015-11-02 05:40:18 C 21 54 01.045 -03 48 27.90 L F51
2015-11-02 06:00:25 C 21 54 00.328 -03 48 33.17 L F51
2015-11-03 04:58:03 C 21 53 16.659 -03 54 22.92 L F51
2015-11-03 05:18:10 C 21 53 15.978 -03 54 27.99 L F51
2015-11-03 05:39:42 C 21 53 15.271 -03 54 33.60 L F51
2015-11-03 05:59:46 C 21 53 14.611 -03 54 38.42 L F51
2019-09-04 07:21:31 C 23 32 55.33 +05 13 06.1 V G96
2019-09-04 07:29:00 C 23 32 54.88 +05 13 05.2 V G96
2019-09-04 07:36:27 C 23 32 54.38 +05 13 03.4 V G96
2019-09-04 07:43:56 C 23 32 53.89 +05 13 01.3 V G96
2019-09-05 08:59:40 C 23 31 19.04 +05 07 39.4 V V06
2019-09-05 09:01:49 C 23 31 18.89 +05 07 39.0 V V06
2019-09-05 09:14:44 C 23 31 18.07 +05 07 36.6 V V06
2019-09-05 09:16:52 C 23 31 17.94 +05 07 35.4 V V06
2019-09-20 05:37:13 C 23 05 22.46 +03 22 19.2 V G96
2019-09-20 05:45:15 C 23 05 21.80 +03 22 16.4 V G96
2019-09-20 05:53:17 C 23 05 21.12 +03 22 13.4 V G96
2019-09-20 06:01:19 C 23 05 20.44 +03 22 10.2 V G96
2019-09-27 08:45:55 C 22 51 20.960 +02 15 11.59 U F51
2019-09-27 09:05:04 C 22 51 19.336 +02 15 03.60 U F51
2019-09-27 09:24:10 C 22 51 17.705 +02 14 55.62 U F51
2019-09-27 09:43:13 C 22 51 16.084 +02 14 47.70 U F51
2019-10-02 04:18:07 C 22 41 48.72 +01 26 04.6 V G96
2019-10-02 04:26:13 C 22 41 48.05 +01 26 01.0 V G96
2019-10-02 04:34:20 C 22 41 47.37 +01 25 57.7 V G96
2019-10-02 04:42:29 C 22 41 46.62 +01 25 53.6 V G96
2019-10-22 07:19:03 C 22 07 04.051 -01 56 36.79 U F52
2019-10-22 07:36:52 C 22 07 02.996 -01 56 43.46 U F52
2019-10-22 07:54:38 C 22 07 01.936 -01 56 50.07 U F52
2019-10-22 08:12:22 C 22 07 00.874 -01 56 56.66 U F52
2023-09-06 07:24:46 C 23 30 28.811 +04 59 55.36 V G96
2023-09-06 07:32:55 C 23 30 28.285 +04 59 53.56 V G96
2023-09-06 07:41:06 C 23 30 27.792 +04 59 51.18 V G96
2023-09-13 09:16:18 C 23 18 55.075 +04 15 06.16 X F51
2023-09-13 09:34:56 C 23 18 53.719 +04 15 00.77 X F51
2023-09-13 09:53:31 C 23 18 52.327 +04 14 55.11 X F51
2023-09-13 10:12:12 C 23 18 50.949 +04 14 49.48 X F51