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
2021-06-12 11:54:21 C 20 20 27.43 +17 43 43.9 V T08
2021-06-12 12:02:04 C 20 20 27.85 +17 43 56.5 V T08
2021-06-14 00:36:55 C 20 22 34.07 +18 43 25.5 V G33
2021-06-14 00:40:07 C 20 22 34.31 +18 43 30.5 V G33
2021-06-14 00:45:09 C 20 22 34.60 +18 43 38.8 V G33
2021-06-20 13:08:18 C 20 30 23.71 +22 35 54.0 V T08
2021-06-20 13:12:18 C 20 30 23.86 +22 35 59.2 V T08
2021-06-20 13:19:54 C 20 30 24.16 +22 36 09.7 V T08
2021-06-24 11:22:54 C 20 34 13.03 +24 36 42.3 V T08
2021-06-24 11:26:18 C 20 34 13.13 +24 36 46.1 V T08
2021-06-24 11:30:17 C 20 34 13.25 +24 36 51.2 V T08
2021-06-24 11:37:51 C 20 34 13.49 +24 37 00.3 V T08
2021-06-26 11:15:03 C 20 35 53.99 +25 32 22.3 V T05
2021-06-26 11:17:41 C 20 35 54.09 +25 32 25.3 V T05
2021-06-26 11:22:32 C 20 35 54.24 +25 32 30.8 V T05
2021-06-26 11:31:33 C 20 35 54.50 +25 32 41.2 V T05
2021-07-06 10:45:29 C 20 41 50.97 +29 11 50.1 V T08
2021-07-06 11:35:00 C 20 41 51.53 +29 12 25.4 V T08
2021-07-06 12:15:34 C 20 41 51.98 +29 12 54.3 V T08
2021-07-13 07:48:43 C 20 43 49.77 +30 44 48.7 U I41
2021-07-13 08:53:57 C 20 43 49.95 +30 45 16.6 U I41
2021-07-15 08:42:31 C 20 44 08.76 +31 03 20.3 U I41
2021-07-15 09:35:54 C 20 44 08.80 +31 03 38.3 U I41
2021-07-17 08:21:59 C 20 44 21.91 +31 17 29.3 U I41
2021-07-17 09:33:33 C 20 44 21.83 +31 17 47.6 U I41
2021-07-30 12:26:27 C 20 44 15.60 +31 19 28.1 V T08
2021-07-30 12:51:38 C 20 44 15.44 +31 19 21.9 V T08
2021-07-30 13:03:34 C 20 44 15.35 +31 19 18.7 V T08
2021-08-03 12:38:28 C 20 44 00.66 +30 50 44.5 V T08
2021-08-03 12:52:43 C 20 44 00.57 +30 50 38.9 V T08
2021-08-03 12:58:47 C 20 44 00.51 +30 50 36.4 V T08
2021-08-03 13:08:15 C 20 44 00.46 +30 50 32.9 V T08
2021-08-05 09:10:42 C 20 43 55.73 +30 33 16.2 V T05
2021-08-05 09:15:02 C 20 43 55.70 +30 33 14.9 V T05
2021-08-05 09:18:59 C 20 43 55.71 +30 33 13.1 V T05
2021-08-05 10:10:00 C 20 43 55.37 +30 32 52.4 V T05
2021-08-09 11:22:32 C 20 43 47.89 +29 46 05.8 V T05
2021-08-09 11:28:08 C 20 43 47.86 +29 46 02.5 V T05
2021-08-09 11:39:07 C 20 43 47.83 +29 45 56.7 V T05
2021-08-09 12:25:38 C 20 43 47.62 +29 45 30.7 V T05
2021-08-16 09:19:55 C 20 44 07.36 +28 02 48.1 V T08
2021-08-16 09:53:28 C 20 44 07.35 +28 02 24.6 V T08
2021-08-16 10:11:21 C 20 44 07.33 +28 02 11.8 V T08
2021-08-17 10:07:43 C 20 44 14.39 +27 45 11.9 V T05
2021-08-17 10:12:19 C 20 44 14.40 +27 45 08.8 V T05
2021-08-17 10:49:38 C 20 44 14.45 +27 44 41.8 V T05
2021-08-17 10:57:04 C 20 44 14.45 +27 44 36.3 V T05
2021-08-19 08:34:22 C 20 44 31.86 +27 10 59.8 V T08
2021-08-19 08:37:41 C 20 44 31.88 +27 10 57.3 V T08
2021-08-19 08:45:39 C 20 44 31.89 +27 10 51.2 V T08