844707 (2017 ER22)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4653683963 ± 4.50e-08
Semi-major axis (a)1.5507113909 AU ± 1.13e-08
Inclination (i)23.89711680° ± 7.47e-06
Long. of Asc. Node (Ω)57.43665056° ± 1.57e-05
Arg. of Perihelion (ω)25.54946555° ± 1.87e-05
Mean Anomaly (M)215.78725215° ± 2.03e-05
Mean Motion (n)0.5104060465°/day ± 5.60e-09
Perihelion dist (q)0.82905932 AU ± 7.01e-08
Aphelion dist (Q)2.27236346 AU ± 7.18e-08
Orbital Period1.93106310 yr ± 2.12e-08
Physical Parameters
H (abs. magnitude)19.52
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.265″
Uncertainty0
Orbit TypeApollo
MOID0.126730 AU
Observations Used147
Oppositions4
Arc Total2017-2025
First Observation Used2017-03-13
Last Observation Used2025-06-22
Observations (154)
Date Type RA Dec Mag Band Observatory
2025-05-23 10:01:31 C 15 28 12.842 -19 34 33.41 X F51
2025-06-22 07:06:40 C 14 44 39.394 -21 21 43.15 X F51
2025-06-22 07:24:22 C 14 44 38.773 -21 21 45.73 X F51
2025-06-22 07:42:01 C 14 44 38.160 -21 21 48.04 X F51