161999 (1989 RC)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5125695443 ± 5.62e-08
Semi-major axis (a)2.3176256527 AU ± 6.85e-09
Inclination (i)7.37873890° ± 4.48e-06
Long. of Asc. Node (Ω)140.08449359° ± 4.64e-05
Arg. of Perihelion (ω)181.50747081° ± 4.83e-05
Mean Anomaly (M)109.10555186° ± 2.20e-05
Mean Motion (n)0.2793491423°/day ± 1.24e-09
Perihelion dist (q)1.12968133 AU ± 1.30e-07
Aphelion dist (Q)3.50556998 AU ± 1.31e-07
Orbital Period3.52829536 yr ± 1.56e-08
Physical Parameters
H (abs. magnitude)18.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.372″
Uncertainty0
Orbit TypeAmor
MOID0.114804 AU
Observations Used139
Oppositions25
Arc Total1989-2024
First Observation Used1989-08-09
Last Observation Used2024-06-05
Observations (156)
Date Type RA Dec Mag Band Observatory
2024-05-27 07:51:17 C 13 13 50.502 +05 39 34.94 X F51
2024-05-27 08:11:51 C 13 13 49.948 +05 39 35.05 X F51
2024-06-05 05:16:49 C 13 09 50.933 +05 30 31.64 V G96
2024-06-05 05:24:15 C 13 09 50.839 +05 30 30.82 V G96
2024-06-05 05:31:41 C 13 09 50.756 +05 30 30.46 V G96
2024-06-05 05:39:09 C 13 09 50.612 +05 30 29.12 V G96