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
2025-11-20 00:25:40 C 06 51 36.293 -52 19 06.46 V M22
2025-11-20 00:34:14 C 06 51 35.400 -52 18 57.06 V M22
2025-11-22 05:02:39 C 06 45 58.188 -51 21 57.82 V W68
2025-11-22 05:05:18 C 06 45 57.953 -51 21 55.30 V W68
2025-11-22 05:39:10 C 06 45 54.072 -51 21 15.98 V W68
2025-11-22 05:57:31 C 06 45 51.994 -51 20 56.47 V W68
2025-11-24 05:42:14 C 06 40 31.078 -50 23 22.20 V W68
2025-11-24 05:44:53 C 06 40 30.713 -50 23 18.82 V W68
2025-11-24 05:48:51 C 06 40 30.355 -50 23 14.78 V W68
2025-11-24 06:07:02 C 06 40 28.085 -50 22 51.56 V W68
2025-11-28 04:25:39 C 06 29 22.855 -48 11 08.56 V W68
2025-11-28 04:29:37 C 06 29 22.270 -48 11 02.36 V W68
2025-11-28 04:47:22 C 06 29 20.050 -48 10 35.51 V W68
2025-11-28 04:59:24 C 06 29 18.509 -48 10 17.33 V W68
2025-12-11 04:47:29 C 05 50 28.181 -37 24 48.38 V W68
2025-12-11 05:22:20 C 05 50 23.690 -37 23 15.94 V W68
2025-12-11 05:27:36 C 05 50 22.992 -37 23 01.72 V W68
2025-12-11 06:08:38 C 05 50 17.724 -37 21 12.92 V W68
2025-12-15 23:06:51 C 05 36 48.343 -31 58 06.10 V M22
2025-12-15 23:12:02 C 05 36 47.770 -31 57 49.32 V M22
2025-12-15 23:39:21 C 05 36 44.458 -31 56 25.73 V M22
2025-12-15 23:46:34 C 05 36 43.577 -31 56 04.13 V M22
2025-12-17 05:12:40 C 05 33 22.303 -30 24 31.21 V W68
2025-12-17 05:16:34 C 05 33 21.826 -30 24 18.61 V W68
2025-12-17 05:23:47 C 05 33 21.017 -30 23 55.82 V W68
2025-12-17 06:12:49 C 05 33 15.230 -30 21 20.48 V W68
2025-12-18 10:57:01 C 05 30 03.494 -28 49 30.32 V T08
2025-12-18 11:01:37 C 05 30 02.969 -28 49 15.46 V T08
2025-12-18 11:16:11 C 05 30 01.394 -28 48 28.12 V T08
2025-12-18 11:26:13 C 05 30 00.168 -28 47 56.44 V T08
2025-12-18 22:23:16 C 05 28 48.746 -28 11 56.08 V M22
2025-12-18 22:27:13 C 05 28 48.307 -28 11 42.65 V M22
2025-12-18 22:35:08 C 05 28 47.393 -28 11 16.51 V M22
2025-12-18 23:27:41 C 05 28 41.422 -28 08 23.93 V M22
2025-12-21 21:57:19 C 05 21 18.497 -24 10 43.97 V M22
2025-12-21 22:02:32 C 05 21 17.914 -24 10 25.68 V M22
2025-12-21 22:16:23 C 05 21 16.416 -24 09 38.45 V M22
2025-12-21 22:24:50 C 05 21 15.571 -24 09 09.32 V M22
2025-12-23 04:59:53 C 05 18 13.836 -22 22 41.48 V W68
2025-12-23 05:04:01 C 05 18 13.433 -22 22 27.34 V W68
2025-12-23 05:30:15 C 05 18 10.764 -22 20 54.60 V W68
2025-12-23 06:11:03 C 05 18 06.646 -22 18 30.92 V W68
2025-12-26 10:33:07 C 05 11 05.230 -17 47 07.04 V T05
2025-12-26 10:37:48 C 05 11 04.814 -17 46 49.87 V T05
2025-12-26 11:23:05 C 05 11 00.636 -17 44 06.72 V T05
2025-12-27 09:21:44 C 05 09 08.606 -16 25 04.22 V T05
2025-12-27 10:10:09 C 05 09 04.286 -16 22 09.48 V T05
2025-12-27 10:14:43 C 05 09 03.895 -16 21 52.16 V T05
2025-12-27 10:55:59 C 05 09 00.206 -16 19 23.70 V T05
2025-12-27 21:35:44 C 05 08 07.584 -15 40 42.74 V M22