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
2000-01-10 15:51:45 C 06 41 22.64 +22 40 26.2 360
2000-01-14 03:46:07 C 06 33 12.69 +25 49 02.1 c 747
2000-01-14 03:49:39 C 06 33 12.33 +25 49 10.1 c 747
2000-01-14 03:52:39 C 06 33 12.04 +25 49 16.1 c 747
2000-01-14 03:57:09 C 06 33 11.61 +25 49 25.9 c 747
2000-01-24 20:27:54 C 06 12 58.37 +33 25 37.8 595
2000-01-24 20:34:47 C 06 12 57.93 +33 25 49.0 595
2000-01-24 21:08:26 C 06 12 55.72 +33 26 36.0 595
2000-01-25 11:23:05 C 06 12 03.50 +33 46 57.3 z 402
2000-01-25 11:26:24 C 06 12 03.22 +33 47 04.9 z 402
2000-01-25 11:29:43 C 06 12 02.92 +33 47 07.4 z 402
2001-06-15 22:09:50 C 18 23 45.68 +08 28 18.6 540
2001-06-15 22:16:09 C 18 23 45.14 +08 28 13.4 540
2001-06-15 22:47:51 C 18 23 42.54 +08 27 43.2 540
2001-06-18 21:52:19 C 18 17 48.74 +07 13 14.4 493
2001-06-18 21:54:40 C 18 17 48.51 +07 13 11.7 493
2001-06-18 23:13:19 C 18 17 41.48 +07 11 42.9 493
2001-10-12 08:40:14 C 17 35 16.69 -62 49 03.0 c 474
2001-10-12 08:42:55 C 17 35 17.16 -62 49 05.5 c 474
2001-10-12 08:45:35 C 17 35 17.59 -62 49 07.3 c 474
2001-12-20 01:26:01 C 00 35 34.51 -48 58 52.9 d 829
2001-12-21 00:58:16 C 00 39 34.36 -48 05 24.5 d 829
2003-05-29 05:17:56 C 16 22 31.077 +32 08 43.61 e 645
2003-05-29 05:22:56 C 16 22 30.672 +32 08 41.97 22.27 e 645
2009-04-04 03:25:07 C 11 40 24.09 +60 19 17.2 o H55
2009-04-04 04:02:43 C 11 40 21.65 +60 19 09.2 o H55
2009-04-04 04:40:41 C 11 40 19.11 +60 19 00.4 o H55
2012-05-21 09:56:17 C 21 22 35.72 -06 52 33.4 r G96
2012-05-21 10:04:35 C 21 22 36.51 -06 52 38.5 r G96
2012-05-21 10:13:03 C 21 22 37.30 -06 52 44.0 r G96
2012-05-21 10:21:31 C 21 22 38.17 -06 52 49.0 r G96
2012-06-21 10:28:12 C 22 54 48.62 -21 21 08.3 u 448
2012-06-21 10:41:13 C 22 54 50.80 -21 21 32.9 u 448
2012-06-21 10:54:46 C 22 54 52.94 -21 21 58.9 u 448
2012-10-25 07:55:38 C 07 48 06.39 -43 03 21.6 u 807
2012-10-25 08:01:26 C 07 48 06.45 -43 03 19.1 u 807
2012-10-25 08:07:12 C 07 48 06.50 -43 03 16.6 u 807
2012-10-25 08:17:24 C 07 48 06.59 -43 03 12.0 u 807
2012-10-25 08:30:14 C 07 48 06.70 -43 03 06.3 u 807
2012-11-06 07:24:09 C 07 48 19.82 -40 33 15.4 u 807
2012-11-06 07:30:45 C 07 48 19.72 -40 33 11.5 u 807
2012-11-06 07:36:00 C 07 48 19.63 -40 33 08.3 u 807
2012-11-06 07:42:07 C 07 48 19.52 -40 33 04.8 u 807
2012-11-06 07:47:16 C 07 48 19.43 -40 33 01.7 u 807
2012-11-08 08:22:25 C 07 47 36.14 -40 02 21.0 u 807
2012-11-08 08:28:28 C 07 47 36.02 -40 02 17.1 u 807
2012-11-08 08:34:30 C 07 47 35.89 -40 02 13.2 u 807
2012-11-08 08:40:32 C 07 47 35.74 -40 02 09.5 u 807
2012-11-08 08:46:15 C 07 47 35.62 -40 02 06.0 u 807
2012-11-14 08:17:39 C 07 44 00.74 -38 17 52.4 u 807