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
2016-09-10 06:50:40 C 22 51 13.11 +25 18 25.2 q H45
2016-09-21 13:54:51 C 22 44 44.69 +21 40 55.4 q D29
2016-09-21 14:19:02 C 22 44 44.29 +21 40 35.1 q D29
2016-09-21 14:43:13 C 22 44 43.79 +21 40 15.2 q D29
2016-09-25 02:12:29 C 22 43 24.53 +20 31 09.9 q G96
2016-09-25 02:18:38 C 22 43 24.40 +20 31 04.4 q G96
2016-09-25 02:25:13 C 22 43 24.31 +20 30 59.1 q G96
2016-09-25 02:31:29 C 22 43 24.19 +20 30 54.0 q G96
2016-10-02 22:16:37 C 22 41 42.45 +17 58 39.5 20.1 q J43
2016-10-02 22:29:05 C 22 41 42.33 +17 58 29.9 20.2 q J43
2016-10-02 22:41:33 C 22 41 42.29 +17 58 20.0 19.9 q J43
2016-10-02 22:54:01 C 22 41 42.18 +17 58 10.3 20.5 q J43
2016-10-16 08:53:14 C 22 43 02.187 +14 04 48.67 L F51
2016-10-16 09:23:20 C 22 43 02.505 +14 04 29.27 L F51
2016-10-16 09:38:21 C 22 43 02.666 +14 04 19.39 L F51
2021-05-15 10:02:54 C 19 23 50.00 -04 05 48.0 U I41
2021-05-15 11:02:47 C 19 23 56.11 -04 03 48.8 U I41
2021-05-19 09:35:51 C 19 33 43.22 -00 52 55.9 U I41
2021-05-19 10:34:25 C 19 33 48.86 -00 50 56.4 U I41
2021-05-24 11:34:24 C 19 45 32.16 +03 16 36.5 V T05
2021-05-24 11:39:02 C 19 45 32.56 +03 16 46.1 V T05
2021-05-24 11:46:56 C 19 45 33.26 +03 17 02.4 V T05
2021-05-24 11:58:08 C 19 45 34.28 +03 17 25.2 V T05
2021-05-30 09:33:20 C 19 58 02.93 +08 03 47.7 U I41
2021-05-30 10:33:10 C 19 58 07.64 +08 05 46.8 U I41
2021-05-30 10:33:50 C 19 58 07.69 +08 05 48.2 U I41
2021-05-30 10:39:02 C 19 58 08.84 +08 06 01.9 V T08
2021-05-30 11:16:55 C 19 58 11.85 +08 07 17.5 V T08
2021-05-30 11:35:48 C 19 58 13.32 +08 07 55.3 V T08
2021-05-30 11:51:54 C 19 58 14.59 +08 08 27.4 V T08
2021-06-02 11:34:50 C 20 04 00.61 +10 29 15.6 V T05
2021-06-02 11:39:26 C 20 04 00.93 +10 29 24.5 V T05
2021-06-02 11:55:10 C 20 04 02.10 +10 29 55.1 V T05
2021-06-02 11:56:29 C 20 04 02.17 +10 29 57.6 V T05
2021-06-02 11:59:07 C 20 04 02.37 +10 30 02.7 V T05
2021-06-02 12:04:23 C 20 04 02.76 +10 30 13.4 V T05
2021-06-02 12:42:37 C 20 04 05.51 +10 31 27.5 V T05
2021-06-03 09:53:54 C 20 05 43.24 +11 12 10.6 U I41
2021-06-03 10:39:43 C 20 05 46.51 +11 13 38.5 U I41
2021-06-03 14:12:46 C 20 06 02.36 +11 20 30.7 V T08
2021-06-03 14:18:46 C 20 06 02.78 +11 20 42.3 V T08
2021-06-03 14:29:29 C 20 06 03.52 +11 21 02.8 V T08
2021-06-03 14:46:03 C 20 06 04.70 +11 21 34.3 V T08
2021-06-03 14:50:40 C 20 06 05.01 +11 21 43.2 V T08
2021-06-06 12:41:14 C 20 11 11.56 +13 32 47.0 V T05
2021-06-06 12:43:52 C 20 11 11.75 +13 32 51.7 V T05
2021-06-06 12:48:28 C 20 11 12.03 +13 33 00.4 V T05
2021-06-06 12:56:22 C 20 11 12.54 +13 33 15.0 V T05
2021-06-12 11:47:36 C 20 20 27.05 +17 43 32.3 V T08
2021-06-12 11:50:22 C 20 20 27.22 +17 43 37.0 V T08