2021 JD9

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4887877885
Semi-major axis (a)1.7961565947 AU
Inclination (i)0.65751704°
Long. of Asc. Node (Ω)198.38022807° ± 5.00e+00
Arg. of Perihelion (ω)346.01733553° ± 6.00e+00
Mean Anomaly (M)332.14909916°
Mean Motion (n)0.4094538500°/day
Perihelion dist (q)0.91822200 AU
Aphelion dist (Q)2.67399640 AU
Orbital Period2.40712760 yr
Physical Parameters
H (abs. magnitude)26.58
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.470″
Uncertainty
Orbit TypeApollo
MOID0.005726 AU
Observations Used62
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-05-15
Observations (65)
Date Type RA Dec Mag Band Observatory
2021-05-13 15:20:07 C 16 24 46.96 -06 46 41.0 V 474
2021-05-13 22:55:56 C 16 27 44.72 -07 47 14.7 V I93
2021-05-13 23:01:16 C 16 27 46.16 -07 47 48.8 V I93
2021-05-13 23:06:36 C 16 27 47.66 -07 48 24.5 V I93
2021-05-14 23:22:58 C 16 34 32.11 -10 00 57.8 V 033
2021-05-14 23:23:43 C 16 34 32.26 -10 01 01.4 V 033
2021-05-14 23:24:27 C 16 34 32.38 -10 01 04.5 V 033
2021-05-14 23:25:12 C 16 34 32.51 -10 01 08.1 V 033
2021-05-15 00:03:25 C 16 34 47.138 -10 02 49.01 V J04
2021-05-15 00:05:00 C 16 34 47.491 -10 02 57.56 V J04
2021-05-15 19:02:28 C 16 38 36.75 -11 19 05.1 V N51
2021-05-15 19:17:43 C 16 38 38.68 -11 20 00.2 V N51
2021-05-15 23:20:57 C 16 39 22.56 -11 34 39.9 V 033
2021-05-15 23:23:07 C 16 39 22.84 -11 34 46.5 V 033
2021-05-15 23:24:11 C 16 39 22.99 -11 34 50.2 V 033