2021 LY4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5661648937 ± 9.76e-05
Semi-major axis (a)2.1612638459 AU ± 4.84e-04
Inclination (i)1.55679936° ± 1.58e-04
Long. of Asc. Node (Ω)92.56684819° ± 4.26e-04
Arg. of Perihelion (ω)211.83009798° ± 3.42e-04
Mean Anomaly (M)133.26885253° ± 1.65e-01
Mean Motion (n)0.3102062855°/day ± 1.04e-04
Perihelion dist (q)0.93763213 AU ± 2.98e-04
Aphelion dist (Q)3.38489556 AU ± 7.87e-04
Orbital Period3.17732531 yr ± 1.07e-03
Physical Parameters
H (abs. magnitude)26.08
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.278″
Uncertainty3
Orbit TypeApollo
MOID0.003119 AU
Observations Used78
Oppositions1
Arc Total2021-2021
First Observation Used2021-06-11
Last Observation Used2021-06-15
Observations (86)
Date Type RA Dec Mag Band Observatory
2021-06-13 21:21:56 C 16 43 04.87 -04 37 20.7 V G17
2021-06-13 22:06:42 C 16 44 01.13 -04 31 08.4 V A17
2021-06-13 22:14:53 C 16 44 11.48 -04 29 52.7 V A17
2021-06-13 22:23:04 C 16 44 21.85 -04 28 36.7 V A17
2021-06-13 23:40:38 C 16 46 06.70 -04 16 28.0 V Z80
2021-06-13 23:48:07 C 16 46 16.67 -04 15 15.8 V Z80
2021-06-13 23:51:00 C 16 46 15.96 -04 14 35.3 V K87
2021-06-13 23:54:35 C 16 46 20.79 -04 14 00.2 V K87
2021-06-13 23:55:37 C 16 46 26.74 -04 14 01.7 V Z80
2021-06-13 23:58:13 C 16 46 25.62 -04 13 24.9 V K87
2021-06-14 00:03:07 C 16 46 36.86 -04 12 48.2 V Z80
2021-06-14 20:59:40 C 17 32 13.58 +00 58 15.2 V B49
2021-06-14 21:02:45 C 17 32 22.91 +00 59 21.5 V B49
2021-06-14 21:05:51 C 17 32 32.33 +01 00 29.6 V B49
2021-06-14 22:18:07 C 17 36 09.32 +01 27 02.4 V 160
2021-06-14 22:19:00 C 17 36 12.12 +01 27 22.8 V 160
2021-06-14 22:19:47 C 17 36 14.61 +01 27 40.5 V 160
2021-06-14 22:20:33 C 17 36 16.98 +01 27 57.8 V 160
2021-06-15 08:26:46 C 18 18 28.86 +06 19 32.2 V I52
2021-06-15 08:27:17 C 18 18 31.45 +06 19 50.2 V I52
2021-06-15 08:27:48 C 18 18 34.00 +06 20 08.1 V I52
2021-06-15 08:28:49 C 18 18 39.15 +06 20 43.9 V I52
2021-06-15 08:29:20 C 18 18 41.71 +06 21 01.9 V I52
2021-06-15 08:30:22 C 18 18 46.86 +06 21 37.8 V I52
2021-06-15 09:17:16 C 18 23 38.52 +06 53 06.4 V T08
2021-06-15 09:59:31 C 18 27 22.18 +07 19 01.9 V T08
2021-06-15 10:09:28 C 18 28 15.91 +07 25 14.6 V T08
2021-06-15 10:13:41 C 18 28 38.58 +07 27 51.8 V T08
2021-06-15 10:28:18 C 18 29 58.32 +07 37 02.9 V T08
2021-06-15 22:32:51 C 20 01 53.18 +16 14 13.5 V J95
2021-06-15 22:34:06 C 20 02 04.81 +16 15 12.2 V J95
2021-06-15 22:35:21 C 20 02 16.53 +16 16 10.9 V J95
2021-06-15 22:36:39 C 20 02 28.57 +16 17 11.5 V J95
2021-06-15 23:48:16 C 20 13 44.61 +17 12 43.5 V Z80
2021-06-15 23:52:01 C 20 14 20.45 +17 15 35.4 V Z80
2021-06-15 23:56:01 C 20 14 58.82 +17 18 38.3 V Z80