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
2021-09-23 05:37:08 C 21 04 32.53 +15 13 06.0 U I41
2021-09-23 07:29:02 C 21 04 36.80 +15 11 35.8 U I41
2021-09-27 05:27:35 C 21 08 32.71 +13 58 35.1 U I41
2021-09-27 06:07:51 C 21 08 34.36 +13 58 04.6 U I41
2021-09-27 08:40:10 C 21 08 40.73 +13 56 08.8 U I41
2021-09-29 04:38:10 C 21 10 37.24 +13 23 29.2 U I41
2021-09-29 06:37:29 C 21 10 42.34 +13 22 01.6 U I41
2021-10-01 04:37:24 C 21 12 47.79 +12 48 54.9 U I41
2021-10-01 05:06:18 C 21 12 49.06 +12 48 34.4 U I41
2021-10-01 05:07:41 C 21 12 49.11 +12 48 33.6 U I41
2021-10-01 06:14:03 C 21 12 52.02 +12 47 46.5 U I41
2021-10-07 02:04:13 C 21 19 34.76 +11 14 00.9 V G96
2021-10-07 02:12:23 C 21 19 35.17 +11 13 56.8 V G96
2021-10-07 02:20:33 C 21 19 35.55 +11 13 50.7 V G96
2021-10-07 02:28:45 C 21 19 35.94 +11 13 45.5 V G96
2021-10-24 05:18:02 C 21 41 48.549 +07 41 01.46 U F51
2021-10-24 05:52:46 C 21 41 50.484 +07 40 47.40 U F51
2021-10-24 06:10:05 C 21 41 51.446 +07 40 40.38 U F51
2021-11-10 04:05:00 C 22 06 14.10 +05 37 30.5 V G96
2021-11-10 04:13:07 C 22 06 14.62 +05 37 28.5 V G96
2021-11-10 04:21:12 C 22 06 15.03 +05 37 27.6 V G96