331509 (1999 YA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3390296047 ± 2.12e-08
Semi-major axis (a)1.6768554027 AU ± 1.19e-09
Inclination (i)38.24071693° ± 5.42e-06
Long. of Asc. Node (Ω)106.15008307° ± 3.91e-06
Arg. of Perihelion (ω)265.58189497° ± 8.60e-06
Mean Anomaly (M)23.21119646° ± 5.04e-06
Mean Motion (n)0.4539090633°/day ± 4.83e-10
Perihelion dist (q)1.10835178 AU ± 3.55e-08
Aphelion dist (Q)2.24535903 AU ± 3.55e-08
Orbital Period2.17141794 yr ± 2.31e-09
Physical Parameters
H (abs. magnitude)18.23
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.328″
Uncertainty0
Orbit TypeAmor
MOID0.367286 AU
Observations Used414
Oppositions15
Arc Total1999-2026
First Observation Used1999-12-16
Last Observation Used2026-01-12
Observations (433)
Date Type RA Dec Mag Band Observatory
2021-11-16 12:19:53 C 11 01 28.38 +21 20 47.5 – V G96
2022-02-08 08:57:29 C 12 36 19.95 +50 57 10.9 – V G96
2022-02-08 09:06:40 C 12 36 19.68 +50 57 20.8 – V G96
2022-02-08 09:15:49 C 12 36 19.57 +50 57 30.8 – V G96
2022-02-08 09:23:22 C 12 36 19.39 +50 57 38.9 – V G96
2023-12-12 13:06:01 C 10 00 46.051 +19 12 27.95 – X F52
2023-12-12 13:25:33 C 10 00 46.476 +19 12 56.15 – X F52
2023-12-12 13:45:07 C 10 00 46.900 +19 13 24.11 – X F52
2023-12-12 14:04:41 C 10 00 47.323 +19 13 52.24 – X F52
2023-12-15 10:01:05 C 10 02 15.486 +20 53 38.69 – V G96
2023-12-15 10:08:31 C 10 02 15.522 +20 53 49.81 – V G96
2023-12-15 10:15:58 C 10 02 15.587 +20 54 00.68 – V G96
2023-12-15 10:23:25 C 10 02 15.709 +20 54 12.49 – V G96
2023-12-16 10:14:26 C 10 02 41.341 +21 30 28.69 – V G96
2023-12-16 10:21:55 C 10 02 41.446 +21 30 40.57 – V G96
2023-12-16 10:29:24 C 10 02 41.561 +21 30 51.84 – V G96
2023-12-16 10:36:53 C 10 02 41.658 +21 31 03.76 – V G96
2023-12-25 14:59:37 C 10 04 14.484 +27 33 54.85 – X F52
2023-12-25 15:07:33 C 10 04 14.427 +27 34 08.60 – X F52
2023-12-25 15:15:12 C 10 04 14.391 +27 34 21.83 – X F52
2024-01-31 06:34:47 C 09 17 10.939 +51 47 32.21 – V G96
2024-01-31 06:42:17 C 09 17 10.187 +51 47 40.74 – V G96
2024-01-31 06:49:45 C 09 17 09.442 +51 47 48.70 – V G96
2024-01-31 06:57:14 C 09 17 08.729 +51 47 57.37 – V G96
2024-02-15 08:33:49 C 08 42 56.876 +56 25 51.06 – V G96
2024-02-15 08:41:24 C 08 42 56.214 +56 25 54.19 – V G96
2024-02-15 08:48:59 C 08 42 55.505 +56 25 57.47 – V G96
2024-02-15 08:56:34 C 08 42 54.846 +56 26 00.74 – V G96
2025-04-30 13:50:56 C 20 14 46.835 -00 26 28.09 – X F52
2025-04-30 14:04:46 C 20 14 47.779 -00 26 30.67 – X F52
2025-04-30 14:18:34 C 20 14 48.710 -00 26 33.29 – X F52
2025-05-21 09:48:30 C 20 49 52.849 -03 13 44.15 – V G96
2025-05-21 09:55:58 C 20 49 53.407 -03 13 47.46 – V G96
2025-05-21 10:03:25 C 20 49 53.958 -03 13 52.64 – V G96
2025-05-21 10:10:53 C 20 49 54.426 -03 13 57.22 – V G96
2025-05-31 13:08:45 C 21 07 41.014 -06 02 41.07 – X F51
2025-05-31 13:27:27 C 21 07 42.373 -06 02 57.35 – X F51
2025-05-31 13:46:09 C 21 07 43.726 -06 03 13.74 – X F51
2025-06-05 12:50:23 C 21 16 51.864 -07 59 43.01 – X F52
2025-06-05 13:07:51 C 21 16 53.179 -08 00 02.12 – X F52
2025-06-05 13:25:21 C 21 16 54.501 -08 00 21.34 – X F52
2025-06-07 09:07:13 C 21 20 22.045 -08 50 08.88 – V G96
2025-06-07 09:14:44 C 21 20 22.654 -08 50 17.38 – V G96
2025-06-07 09:22:14 C 21 20 23.226 -08 50 26.12 – V G96
2025-06-07 09:29:44 C 21 20 23.824 -08 50 34.73 – V G96
2025-06-20 10:12:56 C 21 47 42.875 -17 08 44.05 – V G96
2025-06-20 10:19:47 C 21 47 43.537 -17 08 58.60 – V G96
2025-06-20 10:28:15 C 21 47 44.318 -17 09 16.09 – V G96
2025-06-20 10:36:44 C 21 47 45.103 -17 09 33.55 – V G96
2025-06-24 00:10:35 C 21 56 24.127 -20 19 26.83 – V M22