2021 YS

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5083522400 ± 3.73e-08
Semi-major axis (a)2.1572219253 AU ± 4.45e-08
Inclination (i)7.07597190° ± 4.19e-06
Long. of Asc. Node (Ω)152.10878676° ± 3.65e-05
Arg. of Perihelion (ω)20.10441713° ± 3.65e-05
Mean Anomaly (M)54.35137331° ± 1.36e-05
Mean Motion (n)0.3110785297°/day ± 9.63e-09
Perihelion dist (q)1.06059333 AU ± 8.34e-08
Aphelion dist (Q)3.25385052 AU ± 1.05e-07
Orbital Period3.16841630 yr ± 9.81e-08
Physical Parameters
H (abs. magnitude)19.92
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.327″
Uncertainty0
Orbit TypeAmor
MOID0.076732 AU
Observations Used190
Oppositions5
Arc Total2016-2024
First Observation Used2016-07-06
Last Observation Used2024-11-10
Observations (196)
Date Type RA Dec Mag Band Observatory
2016-07-06 12:27:26 C 20 42 04.932 -11 18 00.04 V F51
2016-07-06 12:44:17 C 20 42 04.069 -11 18 04.67 V F51
2016-07-06 13:01:08 C 20 42 03.249 -11 18 08.80 V F51
2016-07-13 11:06:37 C 20 33 32.974 -12 04 16.28 V F51
2018-11-05 08:04:18 C 09 17 49.87 +08 02 42.5 W W84
2018-11-05 08:07:17 C 09 17 50.23 +08 02 40.9 W W84
2018-11-13 15:00:45 C 09 46 09.699 +05 50 12.21 V F52
2018-11-13 15:11:15 C 09 46 11.263 +05 50 04.61 V F52
2019-02-01 15:38:23 C 15 46 59.317 -15 58 25.84 V F51
2019-02-01 15:44:21 C 15 47 00.413 -15 58 26.78 V F51
2019-02-05 15:21:51 C 16 04 36.737 -16 10 38.07 V F51
2019-02-05 15:29:39 C 16 04 38.129 -16 10 39.01 V F51
2021-12-29 14:29:50 C 05 26 49.43 +05 25 36.0 V D29
2021-12-29 14:50:12 C 05 26 47.97 +05 25 35.7 V D29
2021-12-29 15:10:34 C 05 26 46.51 +05 25 35.9 V D29
2021-12-30 12:35:02 C 05 25 21.38 +05 26 06.5 q E23
2021-12-30 12:50:03 C 05 25 20.37 +05 26 06.1 q E23
2021-12-30 13:20:02 C 05 25 18.21 +05 26 06.5 q E23
2021-12-30 15:06:52 C 05 25 11.67 +05 25 47.3 V N88
2021-12-30 15:10:14 C 05 25 11.43 +05 25 47.6 V N88
2021-12-30 15:13:36 C 05 25 11.19 +05 25 47.8 V N88
2021-12-30 15:51:49 C 05 25 08.33 +05 25 52.9 q O49
2021-12-30 17:29:15 C 05 25 02.30 +05 25 50.5 X 119
2021-12-30 17:41:25 C 05 25 01.47 +05 25 51.1 X 119
2021-12-30 17:53:35 C 05 25 00.61 +05 25 50.4 X 119
2021-12-30 17:58:38 C 05 24 59.32 +05 25 55.3 q O49
2021-12-30 18:03:43 C 05 24 59.00 +05 25 55.2 q O49
2021-12-30 18:35:43 C 05 24 58.11 +05 25 51.0 X I93
2021-12-30 18:50:55 C 05 24 57.05 +05 25 50.7 X I93
2021-12-30 19:06:06 C 05 24 56.00 +05 25 52.2 X I93
2021-12-30 20:02:23 C 05 24 52.22 +05 25 54.0 Z J57
2021-12-30 20:07:54 C 05 24 51.63 +05 25 53.4 v L06
2021-12-30 20:40:22 C 05 24 49.59 +05 25 55.5 Z J57
2021-12-30 21:09:38 C 05 24 47.48 +05 25 55.0 V B49
2021-12-30 21:13:48 C 05 24 47.17 +05 25 55.2 V B49
2021-12-30 21:24:34 C 05 24 46.29 +05 25 54.9 v L06
2021-12-30 21:25:54 C 05 24 46.42 +05 25 56.0 Z J57
2021-12-30 21:51:53 C 05 24 44.40 +05 25 56.1 q 104
2021-12-30 21:59:48 C 05 24 43.85 +05 25 56.3 q 104
2021-12-30 22:07:43 C 05 24 43.28 +05 25 56.5 q 104
2021-12-30 22:34:14 C 05 24 41.44 +05 25 56.4 v L06
2021-12-30 22:37:15 C 05 24 41.23 +05 25 56.4 v L06
2021-12-30 22:57:56 C 05 24 39.82 +05 25 57.2 V 204
2021-12-30 23:08:45 C 05 24 39.07 +05 25 57.4 V 204
2021-12-30 23:19:36 C 05 24 38.31 +05 25 57.5 V 204
2021-12-30 23:53:01 C 05 24 35.86 +05 25 57.8 S L01
2021-12-30 23:59:15 C 05 24 35.48 +05 25 59.0 S L01
2021-12-31 00:04:18 C 05 24 35.14 +05 25 58.8 S L01
2021-12-31 00:08:56 C 05 24 34.79 +05 25 58.9 S L01
2021-12-31 02:28:15 C 05 24 26.58 +05 26 04.0 V 734