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
2018-04-05 07:40:40 C 15 39 47.47 +43 54 29.4 u H21
2018-04-05 08:23:05 C 15 39 45.70 +43 54 52.4 u H21
2018-04-08 08:44:26 C 15 36 36.90 +44 32 17.7 U H21
2018-04-08 09:10:54 C 15 36 35.54 +44 32 31.5 U H21
2018-04-11 06:37:08 C 15 33 11.77 +45 05 11.9 u H21
2018-04-11 06:55:57 C 15 33 10.80 +45 05 20.7 u H21
2018-04-11 07:20:18 C 15 33 09.52 +45 05 31.9 u H21
2018-04-18 08:41:23 C 15 23 26.03 +46 09 33.8 u H21
2018-04-18 08:54:15 C 15 23 25.27 +46 09 38.1 u H21
2018-04-18 09:14:51 C 15 23 23.92 +46 09 44.9 u H21
2018-04-20 08:36:55 C 15 20 22.04 +46 23 11.4 V H21
2018-04-20 09:05:03 C 15 20 20.08 +46 23 18.0 V H21
2018-04-20 09:33:08 C 15 20 18.21 +46 23 25.4 V H21
2018-05-05 06:05:10 C 14 54 56.27 +46 52 16.9 u H21
2018-05-05 06:23:41 C 14 54 54.85 +46 52 14.8 u H21
2018-05-07 06:04:31 C 14 51 24.52 +46 45 55.8 u H21
2018-05-07 06:23:25 C 14 51 23.08 +46 45 53.0 u H21
2018-05-07 06:45:44 C 14 51 21.44 +46 45 49.5 u H21
2018-05-11 05:09:35 C 14 44 31.31 +46 26 06.3 u H21
2018-05-11 05:40:36 C 14 44 29.04 +46 25 58.3 u H21
2018-05-11 05:58:26 C 14 44 27.71 +46 25 53.3 u H21
2018-05-12 06:44:39 C 14 42 42.17 +46 19 08.6 u H21
2018-05-12 07:07:21 C 14 42 40.52 +46 19 01.3 u H21
2018-05-12 07:25:43 C 14 42 39.14 +46 18 56.5 u H21
2018-05-13 03:59:45 C 14 41 12.76 +46 12 50.2 u H21
2018-05-13 04:12:25 C 14 41 11.88 +46 12 46.4 u H21
2018-05-13 04:44:30 C 14 41 09.55 +46 12 36.8 u H21
2018-05-17 03:54:33 C 14 34 41.07 +45 38 41.2 u H21
2018-05-17 04:18:24 C 14 34 39.40 +45 38 31.3 u H21
2018-05-17 04:40:24 C 14 34 37.98 +45 38 22.2 u H21
2020-02-21 08:56:01 C 14 28 07.03 +44 20 21.6 u H21
2020-02-21 09:04:40 C 14 28 07.05 +44 20 29.4 u H21
2020-02-21 09:12:45 C 14 28 07.06 +44 20 36.2 u H21
2020-02-28 08:32:51 C 14 28 06.21 +46 44 33.6 u H21
2020-02-28 08:44:59 C 14 28 06.12 +46 44 43.9 u H21
2020-02-28 08:51:32 C 14 28 06.09 +46 44 49.2 u H21
2020-02-29 08:57:59 C 14 27 53.79 +47 05 06.7 u H21
2020-02-29 09:05:24 C 14 27 53.72 +47 05 12.3 u H21
2020-02-29 09:13:13 C 14 27 53.60 +47 05 19.4 u H21
2020-03-01 08:55:36 C 14 27 38.46 +47 25 06.9 u H21
2020-03-01 09:05:14 C 14 27 38.34 +47 25 14.5 u H21
2020-03-01 09:15:43 C 14 27 38.27 +47 25 23.5 u H21
2020-03-04 08:52:36 C 14 26 33.89 +48 24 05.5 u H21
2020-03-04 09:01:57 C 14 26 33.75 +48 24 12.8 u H21
2020-03-04 09:13:48 C 14 26 33.54 +48 24 21.8 u H21
2020-05-01 03:03:05 C 13 03 46.51 +54 09 08.2 u H21
2020-05-01 03:18:17 C 13 03 45.62 +54 09 02.0 u H21
2020-05-01 03:31:10 C 13 03 44.92 +54 08 56.3 u H21
2021-11-16 12:05:08 C 11 01 27.22 +21 20 42.0 V G96
2021-11-16 12:11:55 C 11 01 27.75 +21 20 44.2 V G96