2021 LA4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5114343321 ± 7.78e-08
Semi-major axis (a)2.5872195096 AU ± 5.72e-08
Inclination (i)25.84729940° ± 1.24e-05
Long. of Asc. Node (Ω)240.63441365° ± 1.05e-05
Arg. of Perihelion (ω)86.24030288° ± 2.60e-05
Mean Anomaly (M)1.59297909° ± 2.27e-05
Mean Motion (n)0.2368439852°/day ± 7.85e-09
Perihelion dist (q)1.26402663 AU ± 2.03e-07
Aphelion dist (Q)3.91041239 AU ± 2.19e-07
Orbital Period4.16150017 yr ± 1.38e-07
Physical Parameters
H (abs. magnitude)20.93
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.203″
Uncertainty0
Orbit TypeAmor
MOID0.517348 AU
Observations Used62
Oppositions6
Arc Total2013-2021
First Observation Used2013-11-27
Last Observation Used2021-07-09
Observations (62)
Date Type RA Dec Mag Band Observatory
2021-06-21 04:33:41 C 16 21 11.71 +02 36 15.9 V 807
2021-06-21 04:42:08 C 16 21 11.32 +02 36 28.8 V 807
2021-06-21 04:50:35 C 16 21 10.91 +02 36 42.2 V 807
2021-06-27 06:29:05 C 16 15 34.863 +06 08 21.84 U F51
2021-06-27 06:45:01 C 16 15 34.267 +06 08 44.10 U F51
2021-06-27 07:16:57 C 16 15 33.039 +06 09 28.21 U F51
2021-07-05 02:58:16 C 16 10 18.36 +10 09 51.3 u H21
2021-07-05 03:13:26 C 16 10 18.02 +10 10 08.8 u H21
2021-07-05 03:24:43 C 16 10 17.75 +10 10 21.9 u H21
2021-07-09 08:22:20 C 16 08 34.923 +12 02 40.66 U F51
2021-07-09 08:59:30 C 16 08 34.309 +12 03 19.68 U F51
2021-07-09 09:18:10 C 16 08 34.001 +12 03 39.19 U F51