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
2014-07-26 08:10:24 C 16 24 28.834 -12 11 22.08 L F51
2014-07-26 08:27:29 C 16 24 27.808 -12 11 53.93 L F51
2014-07-28 07:29:36 C 16 21 53.819 -13 39 18.46 L F51
2014-07-28 07:47:08 C 16 21 52.850 -13 39 50.70 L F51
2014-07-28 08:04:41 C 16 21 51.878 -13 40 23.08 L F51
2014-07-28 08:22:14 C 16 21 50.904 -13 40 55.37 L F51
2015-01-04 00:52:43 C 00 46 38.36 -36 56 57.5 u 807
2015-01-04 01:01:05 C 00 46 39.63 -36 56 39.2 u 807
2015-01-04 01:09:29 C 00 46 41.00 -36 56 20.4 u 807
2016-04-05 09:07:48 C 17 03 57.18 +29 40 52.7 u H21
2016-04-05 09:23:43 C 17 03 57.01 +29 41 00.8 u H21
2016-04-05 09:50:45 C 17 03 56.83 +29 41 15.5 u H21
2016-04-12 08:13:47 C 17 02 20.86 +31 08 49.7 u H21
2016-04-12 08:29:10 C 17 02 20.64 +31 08 58.2 u H21
2016-04-12 08:57:31 C 17 02 20.18 +31 09 12.0 u H21
2016-04-14 08:53:52 C 17 01 29.34 +31 33 27.2 u H21
2016-04-14 09:07:32 C 17 01 29.07 +31 33 33.9 u H21
2016-04-14 09:34:03 C 17 01 28.51 +31 33 47.2 u H21
2016-04-16 09:28:24 C 17 00 27.10 +31 57 21.8 u H21
2016-04-16 09:36:06 C 17 00 26.89 +31 57 25.7 u H21
2016-04-16 09:50:56 C 17 00 26.52 +31 57 32.8 u H21
2016-04-17 08:16:11 C 16 59 54.24 +32 08 20.3 u H21
2016-04-17 08:33:44 C 16 59 53.81 +32 08 28.9 u H21
2016-04-17 08:54:13 C 16 59 53.24 +32 08 38.8 u H21
2016-04-18 09:28:52 C 16 59 14.85 +32 20 16.2 u H21
2016-04-18 09:37:57 C 16 59 14.61 +32 20 20.7 u H21
2016-04-18 09:55:30 C 16 59 14.07 +32 20 28.3 u H21
2016-05-05 13:34:31 C 16 41 34.810 +34 49 43.38 L F51
2016-05-05 13:54:40 C 16 41 33.599 +34 49 48.11 L F51
2016-05-05 14:14:48 C 16 41 32.382 +34 49 52.26 L F51
2016-05-05 14:35:07 C 16 41 31.158 +34 49 56.59 L F51
2016-05-14 07:47:22 C 16 28 01.21 +35 16 01.2 q G96
2016-05-14 07:48:49 C 16 28 01.13 +35 16 00.6 q G96
2016-05-14 07:56:07 C 16 28 00.58 +35 16 01.5 q G96
2016-05-14 07:57:32 C 16 28 00.42 +35 16 01.2 q G96
2016-05-14 08:04:52 C 16 27 59.85 +35 16 01.4 q G96
2016-05-14 08:06:18 C 16 27 59.83 +35 16 01.1 q G96
2016-05-14 08:15:04 C 16 27 59.17 +35 16 01.6 q G96
2016-06-27 08:33:41 C 15 17 37.460 +25 03 28.60 L F51
2016-06-27 08:51:40 C 15 17 36.694 +25 03 09.22 L F51
2016-06-27 09:09:37 C 15 17 35.940 +25 02 49.52 L F51
2016-06-27 09:27:38 C 15 17 35.183 +25 02 29.84 L F51
2016-07-06 04:52:20 C 15 10 45.57 +21 01 16.4 q G96
2016-07-06 05:00:38 C 15 10 45.33 +21 01 06.3 q G96
2016-07-06 05:08:54 C 15 10 45.11 +21 00 57.1 q G96
2016-07-06 05:17:19 C 15 10 44.91 +21 00 46.0 q G96
2018-03-18 09:21:44 C 15 49 44.57 +39 23 22.2 u H21
2018-03-18 09:28:56 C 15 49 44.47 +39 23 27.4 u H21
2018-03-18 09:39:27 C 15 49 44.39 +39 23 34.8 u H21
2018-04-05 07:19:36 C 15 39 48.38 +43 54 18.3 u H21