IAA RAS IAA Minor Planet Database

2021 LL9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4879549000
Semi-major axis (a)2.1326078000 AU
Inclination (i)6.20626000°
Long. of Asc. Node (Ω)230.79805000°
Arg. of Perihelion (ω)71.65599000°
Mean Anomaly (M)140.60456000°
Mean Motion (n)0.3164736600°/day
Perihelion dist (q)1.09199140 AU
Aphelion dist (Q)3.17322420 AU
Orbital Period3.11434330 yr
Physical Parameters
H (abs. magnitude)24.60
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.590″
Uncertainty9
Orbit TypeAmor
MOID0.128210 AU
Observations Used20
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2021-06-15
Observations (20)
Date Type RA Dec Mag Band Observatory
2021-06-14 08:27:53 C 16 56 42.357 -01 00 48.16 – U F51
2021-06-14 08:47:56 C 16 56 43.405 -01 00 03.38 – U F51
2021-06-14 09:28:06 C 16 56 45.462 -00 58 33.63 – U F51
2021-06-14 13:37:48 C 16 56 58.774 -00 49 13.52 – V F51
2021-06-14 13:40:09 C 16 56 58.906 -00 49 08.88 – V F51
2021-06-15 05:08:16 C 16 58 02.93 -00 14 22.4 – u H21
2021-06-15 05:17:01 C 16 58 03.42 -00 14 02.3 – u H21
2021-06-15 06:55:14 C 16 58 12.188 -00 10 04.35 – V 568
2021-06-15 06:56:40 C 16 58 12.269 -00 10 01.09 – V 568
2021-06-15 06:58:04 C 16 58 12.351 -00 09 57.93 – V 568
2021-06-15 06:59:30 C 16 58 12.432 -00 09 54.62 – V 568
2021-06-15 07:00:54 C 16 58 12.512 -00 09 51.46 – V 568
2021-06-15 07:02:19 C 16 58 12.596 -00 09 48.11 – V 568
2021-06-15 07:03:52 C 16 58 12.684 -00 09 44.64 – V 568
2021-06-15 07:05:17 C 16 58 12.762 -00 09 41.43 – V 568
2021-06-15 07:06:42 C 16 58 12.842 -00 09 38.21 – V 568
2021-06-15 08:24:19 C 16 58 14.93 -00 06 50.4 – V V06
2021-06-15 08:32:17 C 16 58 15.36 -00 06 32.7 – V V06
2021-06-15 08:40:16 C 16 58 15.81 -00 06 14.2 – V V06
2021-06-15 08:48:14 C 16 58 16.31 -00 05 55.8 – V V06