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
1999-12-16 07:05:55 C 07 43 34.24 -04 34 57.9 18.8 a 704
1999-12-16 07:27:14 C 07 43 32.35 -04 34 06.2 19.5 a 704
1999-12-16 07:48:29 C 07 43 30.51 -04 33 13.7 18.9 a 704
1999-12-16 08:10:16 C 07 43 28.62 -04 32 20.6 18.9 a 704
1999-12-18 06:44:28 C 07 39 28.14 -02 35 50.8 18.6 a 704
1999-12-18 07:27:56 C 07 39 24.09 -02 33 59.2 18.8 a 704
1999-12-18 07:49:07 C 07 39 22.16 -02 33 05.8 19.2 a 704
1999-12-18 08:10:19 C 07 39 20.21 -02 32 10.3 19.0 a 704
1999-12-18 08:32:09 C 07 39 18.20 -02 31 14.6 i 651
1999-12-18 08:36:35 C 07 39 17.77 -02 31 03.6 i 651
1999-12-18 08:40:35 C 07 39 17.43 -02 30 52.9 i 651
1999-12-18 13:43:40 C 07 38 50.90 -02 17 37.3 413
1999-12-18 13:51:42 C 07 38 50.15 -02 17 17.0 413
1999-12-19 08:21:59 C 07 37 09.51 -01 29 43.5 18.3 a 704
1999-12-19 08:44:09 C 07 37 07.32 -01 28 46.5 19.3 a 704
1999-12-19 09:06:17 C 07 37 05.28 -01 27 48.2 18.9 a 704
1999-12-19 09:28:17 C 07 37 03.19 -01 26 50.3 18.6 a 704
1999-12-20 07:04:56 C 07 35 04.10 -00 30 01.1 18.8 a 704
1999-12-20 07:29:47 C 07 35 01.60 -00 28 55.3 19.0 a 704
1999-12-20 07:54:08 C 07 34 59.27 -00 27 51.3 19.0 a 704
1999-12-20 08:40:59 C 07 34 54.69 -00 25 46.9 18.7 a 704
1999-12-20 17:03:03 C 07 34 07.22 -00 03 10.1 413
1999-12-20 17:38:32 C 07 34 03.77 -00 01 36.0 413
1999-12-27 14:05:32 C 07 17 31.13 +07 34 29.0 z 402
1999-12-27 14:07:21 C 07 17 30.89 +07 34 36.6 z 402
1999-12-27 14:14:36 C 07 17 30.13 +07 34 55.6 z 402
1999-12-29 15:40:25 C 07 12 12.54 +09 55 20.2 z 402
1999-12-29 15:42:14 C 07 12 12.35 +09 55 27.3 z 402
1999-12-29 15:44:02 C 07 12 12.19 +09 55 31.2 z 402
1999-12-30 15:50:42 C 07 09 35.46 +11 04 06.5 413
1999-12-30 15:52:56 C 07 09 35.20 +11 04 13.1 413
1999-12-30 21:35:46 C 07 08 58.88 +11 19 58.8 587
1999-12-30 21:41:30 C 07 08 58.20 +11 20 14.8 587
2000-01-04 15:08:27 C 06 56 36.92 +16 33 52.1 z 402
2000-01-04 15:10:16 C 06 56 36.70 +16 33 57.1 z 402
2000-01-05 05:33:18 C 06 55 03.86 +17 12 21.9 18.6 a 704
2000-01-05 05:54:21 C 06 55 01.60 +17 13 20.4 18.8 a 704
2000-01-05 06:36:31 C 06 54 56.79 +17 15 11.2 18.6 a 704
2000-01-05 06:57:30 C 06 54 54.42 +17 16 07.2 18.9 a 704
2000-01-05 23:58:51 C 06 53 04.23 +18 00 58.0 118
2000-01-06 00:03:36 C 06 53 03.75 +18 01 10.8 118
2000-01-06 00:07:22 C 06 53 03.28 +18 01 20.6 118
2000-01-06 05:23:28 C 06 52 30.11 +18 15 11.6 18.7 a 704
2000-01-06 05:44:57 C 06 52 27.66 +18 16 07.6 19.0 a 704
2000-01-06 06:06:00 C 06 52 25.39 +18 17 03.2 18.7 a 704
2000-01-06 19:43:52 C 06 50 58.37 +18 52 21.4 118
2000-01-06 19:46:52 C 06 50 58.04 +18 52 29.4 118
2000-01-06 19:50:47 C 06 50 57.62 +18 52 39.5 118
2000-01-10 15:41:30 C 06 41 23.72 +22 40 02.1 360
2000-01-10 15:46:45 C 06 41 23.17 +22 40 14.5 360