2011 SZ21

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5603917125 ± 2.87e-08
Semi-major axis (a)2.9446010745 AU ± 9.11e-09
Inclination (i)16.49191384° ± 2.54e-06
Long. of Asc. Node (Ω)229.34203148° ± 9.77e-06
Arg. of Perihelion (ω)41.19527697° ± 1.33e-05
Mean Anomaly (M)317.45743301° ± 1.48e-06
Mean Motion (n)0.1950619569°/day ± 9.05e-10
Perihelion dist (q)1.29447104 AU ± 8.47e-08
Aphelion dist (Q)4.59473111 AU ± 8.58e-08
Orbital Period5.05288832 yr ± 2.35e-08
Physical Parameters
H (abs. magnitude)17.51
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.200″
Uncertainty0
Orbit TypeAmor
MOID0.328453 AU
Observations Used279
Oppositions16
Arc Total2001-2021
First Observation Used2001-06-23
Last Observation Used2021-11-10
Observations (321)
Date Type RA Dec Mag Band Observatory
2016-06-11 09:46:22 C 22 31 40.84 +17 50 52.9 R G45
2016-06-11 09:54:08 C 22 31 41.42 +17 51 01.2 R G45
2016-06-11 10:02:09 C 22 31 42.01 +17 51 10.4 R G45
2016-06-11 10:10:03 C 22 31 42.64 +17 51 18.9 R G45
2016-06-13 09:34:55 C 22 35 20.25 +18 41 46.3 R G45
2016-06-13 09:42:43 C 22 35 20.82 +18 41 54.4 R G45
2016-06-13 09:50:37 C 22 35 21.39 +18 42 02.8 R G45
2016-06-13 09:58:29 C 22 35 21.95 +18 42 11.1 R G45
2016-06-17 09:11:00 C 22 42 15.01 +20 19 14.6 q 703
2016-06-17 09:20:32 C 22 42 15.68 +20 19 23.2 q 703
2016-06-17 09:30:04 C 22 42 16.33 +20 19 32.6 q 703
2016-06-17 09:39:37 C 22 42 16.92 +20 19 42.0 q 703
2016-06-20 12:43:50 C 22 47 19.500 +21 32 08.96 L F51
2016-06-20 13:20:28 C 22 47 21.788 +21 32 43.82 L F51
2016-06-20 13:38:47 C 22 47 22.917 +21 33 01.06 L F51
2016-07-03 07:31:01 C 23 04 10.15 +25 48 32.5 R G45
2016-07-03 07:37:56 C 23 04 10.47 +25 48 37.5 R G45
2016-07-03 07:44:53 C 23 04 10.75 +25 48 42.9 R G45
2016-07-03 07:51:46 C 23 04 11.05 +25 48 48.3 R G45
2016-07-03 07:52:36 C 23 04 11.17 +25 48 48.7 R G45
2016-07-03 08:05:33 C 23 04 11.60 +25 48 57.8 R G45
2016-07-03 08:06:19 C 23 04 11.67 +25 48 58.5 R G45
2016-07-15 07:49:03 C 23 13 56.46 +28 46 29.5 q 703
2016-07-15 07:57:45 C 23 13 56.66 +28 46 34.5 q 703
2016-07-15 08:06:28 C 23 13 56.83 +28 46 39.1 q 703
2016-07-15 08:15:09 C 23 13 56.94 +28 46 42.8 q 703
2016-07-18 12:03:22 C 23 15 29.189 +29 22 26.04 L F51
2016-07-18 12:20:12 C 23 15 29.433 +29 22 33.50 L F51
2016-07-18 12:36:55 C 23 15 29.673 +29 22 41.14 L F51
2016-08-24 19:37:43 C 23 04 09.78 +29 25 19.5 q D29
2016-08-24 20:03:11 C 23 04 08.87 +29 25 07.6 q D29
2016-08-24 20:28:38 C 23 04 07.98 +29 24 55.1 q D29
2016-08-30 06:20:03 C 22 59 45.38 +28 17 27.1 q 703
2016-08-30 06:25:50 C 22 59 45.15 +28 17 24.1 q 703
2016-08-30 06:31:38 C 22 59 44.89 +28 17 21.4 q 703
2016-08-30 06:37:25 C 22 59 44.71 +28 17 17.6 q 703
2016-09-05 08:29:29 C 22 54 51.98 +26 44 21.6 q H45
2016-09-05 08:31:39 C 22 54 51.89 +26 44 19.6 q H45
2016-09-05 08:33:08 C 22 54 51.85 +26 44 18.8 q H45
2016-09-05 08:34:41 C 22 54 51.80 +26 44 18.1 q H45
2016-09-05 08:36:08 C 22 54 51.74 +26 44 17.0 q H45
2016-09-05 08:37:38 C 22 54 51.71 +26 44 16.2 q H45
2016-09-06 06:31:58 C 22 54 10.15 +26 29 00.9 q 703
2016-09-06 06:45:23 C 22 54 09.58 +26 28 51.3 q 703
2016-09-06 06:52:06 C 22 54 09.18 +26 28 45.8 q 703
2016-09-10 06:40:51 C 22 51 13.42 +25 18 32.8 q H45
2016-09-10 06:42:25 C 22 51 13.38 +25 18 31.6 q H45
2016-09-10 06:44:02 C 22 51 13.33 +25 18 30.3 q H45
2016-09-10 06:45:43 C 22 51 13.28 +25 18 28.9 q H45
2016-09-10 06:47:54 C 22 51 13.22 +25 18 27.5 q H45