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
2021-08-19 09:36:28 C 20 44 32.03 +27 10 12.8 V T08
2021-08-23 10:29:24 C 20 45 23.20 +25 54 08.4 V T08
2021-08-23 10:32:05 C 20 45 23.20 +25 54 06.3 V T08
2021-08-23 10:35:24 C 20 45 23.24 +25 54 03.2 V T08
2021-08-23 10:51:38 C 20 45 23.36 +25 53 50.0 V T08
2021-08-23 11:01:35 C 20 45 23.44 +25 53 41.7 V T08
2021-08-23 11:06:29 C 20 45 23.45 +25 53 38.0 V T08
2021-08-27 02:06:20 C 20 46 29.39 +24 40 57.6 V W46
2021-08-27 02:30:46 C 20 46 29.63 +24 40 37.3 V W46
2021-08-27 02:48:43 C 20 46 29.82 +24 40 21.9 V W46
2021-08-29 08:40:47 C 20 47 19.31 +23 53 54.6 V T05
2021-08-29 08:45:42 C 20 47 19.37 +23 53 50.1 V T05
2021-08-29 08:51:06 C 20 47 19.39 +23 53 45.6 V T05
2021-08-29 08:55:34 C 20 47 19.44 +23 53 41.6 V T05
2021-08-29 09:11:02 C 20 47 19.67 +23 53 27.9 V T05
2021-08-31 10:07:08 C 20 48 10.91 +23 10 27.6 V T08
2021-08-31 10:11:16 C 20 48 10.97 +23 10 24.3 V T08
2021-08-31 11:00:50 C 20 48 11.75 +23 09 39.5 V T08
2021-08-31 11:16:11 C 20 48 11.98 +23 09 25.8 V T08
2021-09-01 05:37:16 C 20 48 33.51 +22 53 07.2 U I41
2021-09-01 06:39:08 C 20 48 34.49 +22 52 12.2 U I41
2021-09-03 07:13:01 C 20 49 33.96 +22 08 50.4 U I41
2021-09-03 07:57:54 C 20 49 34.81 +22 08 09.8 U I41
2021-09-04 08:51:48 C 20 50 08.02 +21 45 53.5 V T08
2021-09-04 09:44:20 C 20 50 09.03 +21 45 05.4 V T08
2021-09-04 09:51:42 C 20 50 09.18 +21 44 58.8 V T08
2021-09-04 09:56:17 C 20 50 09.31 +21 44 54.5 V T08
2021-09-08 09:38:34 C 20 52 30.96 +20 18 50.5 V T08
2021-09-08 09:50:44 C 20 52 31.22 +20 18 39.5 V T08
2021-09-08 09:56:03 C 20 52 31.36 +20 18 34.7 V T08
2021-09-09 07:40:28 C 20 53 06.81 +19 59 01.7 U I41
2021-09-09 08:23:07 C 20 53 07.88 +19 58 23.1 U I41
2021-09-10 08:12:44 C 20 53 48.58 +19 37 07.4 V T05
2021-09-10 08:18:22 C 20 53 48.77 +19 37 03.5 V T05
2021-09-10 09:07:49 C 20 53 49.97 +19 36 18.0 V T05
2021-09-10 09:49:01 C 20 53 51.03 +19 35 42.3 V T05
2021-09-11 05:43:46 C 20 54 26.05 +19 17 54.6 V G96
2021-09-11 05:49:52 C 20 54 26.16 +19 17 50.0 V G96
2021-09-11 05:55:59 C 20 54 26.32 +19 17 44.9 V G96
2021-09-13 05:39:52 C 20 55 53.93 +18 35 28.9 U I41
2021-09-13 06:20:04 C 20 55 55.09 +18 34 53.5 U I41
2021-09-13 13:03:16 C 20 56 08.13 +18 28 59.1 V D29
2021-09-13 13:23:38 C 20 56 08.71 +18 28 41.5 V D29
2021-09-13 13:44:00 C 20 56 09.29 +18 28 23.2 V D29
2021-09-14 04:09:01 C 20 56 37.29 +18 15 45.0 U I41
2021-09-14 05:22:52 C 20 56 39.48 +18 14 40.5 U I41
2021-09-14 06:43:33 C 20 56 41.88 +18 13 29.9 U I41
2021-09-16 05:59:30 C 20 58 16.78 +17 32 29.4 U I41
2021-09-16 08:59:09 C 20 58 22.57 +17 29 53.7 U I41
2021-09-23 05:12:55 C 21 04 31.61 +15 13 25.3 U I41