2021 SY1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5021494754 ± 7.41e-08
Semi-major axis (a)2.0783176592 AU ± 7.75e-09
Inclination (i)6.27552754° ± 7.85e-06
Long. of Asc. Node (Ω)189.70280337° ± 7.64e-06
Arg. of Perihelion (ω)154.35159239° ± 6.14e-05
Mean Anomaly (M)143.92181013° ± 1.66e-05
Mean Motion (n)0.3289609783°/day ± 1.84e-09
Perihelion dist (q)1.03469154 AU ± 1.54e-07
Aphelion dist (Q)3.12194378 AU ± 1.54e-07
Orbital Period2.99617994 yr ± 1.68e-08
Physical Parameters
H (abs. magnitude)24.92
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.288″
Uncertainty0
Orbit TypeAmor
MOID0.044552 AU
Observations Used81
Oppositions2
Arc Total2021-2024
First Observation Used2021-09-28
Last Observation Used2024-10-10
Observations (87)
Date Type RA Dec Mag Band Observatory
2021-09-28 07:07:06 C 21 29 58.023 -01 59 25.36 U F51
2021-09-28 07:25:21 C 21 30 10.071 -01 59 52.13 U F51
2021-09-28 07:43:38 C 21 30 22.114 -02 00 19.04 U F51
2021-09-28 11:58:03 C 21 33 11.912 -02 06 29.56 V F51
2021-09-28 12:03:57 C 21 33 19.83 -02 04 24.9 V 474
2021-09-28 12:07:31 C 21 33 22.21 -02 04 29.4 V 474
2021-09-28 12:12:17 C 21 33 25.45 -02 04 37.0 V 474
2021-09-28 18:31:26 C 21 37 47.81 -02 16 26.9 V N51
2021-09-28 18:40:01 C 21 37 53.61 -02 16 39.6 V N51
2021-09-28 18:48:37 C 21 37 59.29 -02 16 52.4 V N51
2021-09-28 21:17:54 C 21 39 46.24 -02 20 52.0 V L01
2021-09-28 21:19:57 C 21 39 47.63 -02 20 54.5 V L01
2021-09-28 21:26:40 C 21 39 52.04 -02 21 03.8 V L01
2021-09-29 00:58:08 C 21 42 23.67 -02 25 51.6 X W34
2021-09-29 01:11:49 C 21 42 32.76 -02 26 11.3 X W34
2021-09-29 01:23:33 C 21 42 40.62 -02 26 28.4 X W34
2021-09-29 02:11:29 C 21 43 12.96 -02 27 44.6 u H21
2021-09-29 02:23:02 C 21 43 20.65 -02 28 01.5 u H21
2021-09-29 03:13:21 C 21 43 57.62 -02 29 04.0 V 654
2021-09-29 03:45:43 C 21 44 19.12 -02 29 50.9 V 654
2021-09-29 04:57:49 C 21 45 06.88 -02 31 33.9 V 654
2021-09-29 18:55:51 C 21 54 47.88 -02 51 31.0 V 104
2021-09-29 19:06:57 C 21 54 55.22 -02 51 45.8 V 104
2021-09-29 19:33:34 C 21 55 12.99 -02 52 25.8 V L06
2021-09-29 19:35:40 C 21 55 14.36 -02 52 28.5 V L06
2021-09-29 19:40:55 C 21 55 17.86 -02 52 36.3 V L06
2021-09-29 21:39:42 C 21 56 36.52 -02 55 20.1 V 204
2021-09-29 22:01:13 C 21 56 50.76 -02 55 49.9 V 204
2021-10-06 07:13:19 C 23 31 03.483 -05 36 39.07 U F51
2021-10-06 07:30:06 C 23 31 11.713 -05 36 51.22 U F51
2021-10-06 07:46:58 C 23 31 19.949 -05 37 03.02 U F51
2021-10-11 05:30:40 C 00 22 38.18 -06 30 55.1 V G96
2021-10-11 05:38:07 C 00 22 40.73 -06 30 57.3 V G96
2021-10-11 05:45:34 C 00 22 43.21 -06 30 59.3 V G96
2021-10-11 05:53:01 C 00 22 45.73 -06 31 01.2 V G96
2024-09-21 09:48:02 C 22 05 31.855 +18 56 42.53 V F52
2024-09-21 10:01:28 C 22 05 43.310 +18 56 12.74 V F52
2024-09-21 10:12:28 C 22 05 52.729 +18 55 48.24 V F51
2024-09-21 10:27:42 C 22 06 05.721 +18 55 14.06 V F51
2024-09-24 06:52:27 C 23 05 41.068 +15 54 17.10 V 703
2024-09-24 06:55:43 C 23 05 43.724 +15 54 06.48 V 703
2024-09-24 06:58:58 C 23 05 46.244 +15 53 56.22 V 703
2024-09-24 07:02:14 C 23 05 48.851 +15 53 46.93 V 703
2024-09-24 08:58:15 C 23 07 19.384 +15 47 45.96 V I52
2024-09-24 08:58:32 C 23 07 19.607 +15 47 45.06 V I52
2024-09-24 08:58:49 C 23 07 19.834 +15 47 44.05 V I52
2024-09-24 08:59:06 C 23 07 20.046 +15 47 42.83 V I52
2024-09-24 10:28:35 C 23 08 41.947 +15 46 35.47 V 474
2024-09-24 10:30:58 C 23 08 43.802 +15 46 27.62 V 474
2024-09-24 10:33:21 C 23 08 45.641 +15 46 20.71 V 474