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
2021-06-11 06:44:51 C 16 00 53.72 -09 15 03.1 V G96
2021-06-11 06:52:23 C 16 00 55.70 -09 14 46.7 V G96
2021-06-11 06:59:54 C 16 00 57.70 -09 14 30.2 V G96
2021-06-11 07:07:26 C 16 00 59.71 -09 14 13.5 V G96
2021-06-11 08:24:51 C 16 01 20.88 -09 11 17.5 V I52
2021-06-11 08:25:28 C 16 01 21.04 -09 11 16.0 V I52
2021-06-11 08:26:05 C 16 01 21.21 -09 11 14.5 V I52
2021-06-11 08:26:41 C 16 01 21.39 -09 11 13.2 V I52
2021-06-11 09:31:45 C 16 01 51.207 -09 08 06.94 U F51
2021-06-11 09:49:03 C 16 01 55.878 -09 07 27.00 U F51
2021-06-11 10:06:21 C 16 02 00.595 -09 06 46.66 U F51
2021-06-11 10:23:41 C 16 02 05.369 -09 06 05.82 U F51
2021-06-11 11:56:31 C 16 02 42.27 -08 57 22.0 V 474
2021-06-11 12:01:42 C 16 02 43.82 -08 57 09.4 V 474
2021-06-11 12:05:09 C 16 02 44.88 -08 57 00.9 V 474
2021-06-11 12:08:36 C 16 02 45.91 -08 56 52.5 V 474
2021-06-11 19:03:59 C 16 05 22.11 -08 45 20.0 V N51
2021-06-11 19:10:48 C 16 05 24.43 -08 45 01.4 V N51
2021-06-11 19:17:36 C 16 05 26.74 -08 44 42.0 V N51
2021-06-11 21:55:56 C 16 06 44.91 -08 38 13.8 V I93
2021-06-11 21:59:59 C 16 06 43.44 -08 38 01.0 V K83
2021-06-11 22:03:57 C 16 06 47.91 -08 37 50.6 V I93
2021-06-11 22:10:43 C 16 06 47.35 -08 37 30.7 V K83
2021-06-11 22:12:31 C 16 06 51.07 -08 37 27.6 V I93
2021-06-11 22:20:17 C 16 06 50.21 -08 37 07.8 V L01
2021-06-11 22:21:29 C 16 06 51.37 -08 36 59.8 V K83
2021-06-11 22:22:09 C 16 06 50.95 -08 37 03.1 V L01
2021-06-11 22:26:31 C 16 06 52.50 -08 36 50.1 V L01
2021-06-11 22:40:13 C 16 06 58.90 -08 36 12.3 V 203
2021-06-11 22:45:06 C 16 07 00.08 -08 35 51.5 q 160
2021-06-11 22:49:07 C 16 07 01.60 -08 35 40.1 q 160
2021-06-11 22:51:08 C 16 07 02.37 -08 35 34.4 q 160
2021-06-11 22:53:09 C 16 07 03.12 -08 35 28.8 q 160
2021-06-11 22:57:11 C 16 07 04.66 -08 35 17.0 q 160
2021-06-11 23:03:57 C 16 07 07.80 -08 35 03.2 V 203
2021-06-11 23:21:46 C 16 07 14.60 -08 34 12.0 V 204
2021-06-11 23:37:27 C 16 07 20.63 -08 33 25.9 V 204
2021-06-12 09:15:19 C 16 11 55.62 -08 01 25.2 V I52
2021-06-12 09:16:14 C 16 11 55.92 -08 01 22.7 V I52
2021-06-12 09:17:09 C 16 11 56.34 -08 01 19.3 V I52
2021-06-12 09:18:04 C 16 11 56.93 -08 01 14.7 V I52
2021-06-12 22:53:52 C 16 20 44.33 -07 06 37.3 V Z80
2021-06-12 23:03:52 C 16 20 50.88 -07 05 50.4 V Z80
2021-06-12 23:14:12 C 16 20 57.62 -07 05 00.2 V Z80
2021-06-13 07:31:38 C 16 27 36.91 -06 18 29.1 V I52
2021-06-13 07:32:05 C 16 27 37.27 -06 18 26.4 V I52
2021-06-13 07:32:31 C 16 27 37.61 -06 18 23.8 V I52
2021-06-13 07:32:58 C 16 27 37.96 -06 18 21.2 V I52
2021-06-13 21:15:01 C 16 42 56.44 -04 38 23.3 V G17
2021-06-13 21:18:28 C 16 43 00.65 -04 37 52.8 V G17