2009 SZ99

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2145073226 ± 1.01e-07
Semi-major axis (a)0.8147929316 AU ± 5.90e-10
Inclination (i)21.32884237° ± 2.56e-05
Long. of Asc. Node (Ω)338.02719251° ± 2.36e-05
Arg. of Perihelion (ω)147.56070170° ± 3.10e-05
Mean Anomaly (M)239.48203694° ± 5.67e-05
Mean Motion (n)1.3401129284°/day ± 1.46e-09
Perihelion dist (q)0.64001388 AU ± 8.26e-08
Aphelion dist (Q)0.98957198 AU ± 8.26e-08
Orbital Period0.73548002 yr ± 7.99e-10
Physical Parameters
H (abs. magnitude)19.32
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.247″
Uncertainty0
Orbit TypeAten
MOID0.059044 AU
Observations Used62
Oppositions5
Arc Total2009-2023
First Observation Used2009-09-22
Last Observation Used2023-08-14
Observations (63)
Date Type RA Dec Mag Band Observatory
2023-08-04 09:22:40 C 05 00 16.349 -33 05 33.54 V W68
2023-08-04 09:41:31 C 05 00 18.422 -33 05 04.78 V W68
2023-08-06 03:20:11 C 05 05 36.278 -31 54 13.86 V M22
2023-08-06 03:24:57 C 05 05 36.842 -31 54 05.36 V M22
2023-08-06 03:33:41 C 05 05 37.937 -31 53 50.89 V M22
2023-08-06 03:48:47 C 05 05 39.778 -31 53 24.18 V M22
2023-08-06 04:07:07 B 05 05 42.449 -31 52 59.09 Z M49
2023-08-06 04:14:18 B 05 05 43.320 -31 52 46.45 Z M49
2023-08-06 04:20:57 B 05 05 44.107 -31 52 34.54 Z M49
2023-08-14 09:20:55 C 05 40 56.431 -23 09 57.82 V W68
2023-08-14 09:41:48 C 05 41 01.073 -23 08 40.60 V W68
2023-08-14 09:46:26 C 05 41 02.083 -23 08 23.71 V W68
2023-08-14 09:59:18 C 05 41 04.901 -23 07 36.01 V W68