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
2025-06-24 00:20:10 C 21 56 25.085 -20 19 49.44 V M22
2025-06-24 00:29:55 C 21 56 26.062 -20 20 11.94 V M22
2025-06-24 00:35:50 C 21 56 26.662 -20 20 25.98 V M22
2025-06-30 00:31:57 C 22 12 49.154 -26 43 10.31 V M22
2025-06-30 00:35:52 C 22 12 49.598 -26 43 21.94 V M22
2025-06-30 00:46:46 C 22 12 50.897 -26 43 54.84 V M22
2025-06-30 01:01:28 C 22 12 52.634 -26 44 37.93 V M22
2025-07-01 05:04:50 C 22 16 25.325 -28 08 38.51 V W68
2025-07-01 05:08:51 C 22 16 25.843 -28 08 50.39 V W68
2025-07-01 05:41:03 C 22 16 29.894 -28 10 29.89 V W68
2025-07-01 05:48:19 C 22 16 30.778 -28 10 52.10 V W68
2025-07-03 00:45:06 C 22 22 11.633 -30 25 25.46 V M22
2025-07-03 00:47:48 C 22 22 11.957 -30 25 34.00 V M22
2025-07-03 00:55:43 C 22 22 13.010 -30 25 59.23 V M22
2025-07-03 01:03:35 C 22 22 14.002 -30 26 24.79 V M22
2025-07-07 22:09:09 C 22 39 45.350 -37 05 32.71 V M22
2025-07-07 22:45:31 C 22 39 51.190 -37 07 43.82 V M22
2025-07-07 22:50:08 C 22 39 51.955 -37 08 00.92 V M22
2025-07-07 22:54:04 C 22 39 52.591 -37 08 15.22 V M22
2025-07-10 00:48:56 C 22 48 26.770 -40 10 14.88 V M22
2025-07-10 00:56:47 C 22 48 28.051 -40 10 43.46 V M22
2025-07-10 01:03:22 C 22 48 29.201 -40 11 08.23 V M22
2025-07-10 01:06:00 C 22 48 29.582 -40 11 18.92 V M22
2025-07-10 01:13:14 C 22 48 30.919 -40 11 46.14 V M22
2025-07-16 06:46:59 C 23 19 45.202 -49 35 29.76 V W68
2025-07-16 07:16:34 C 23 19 52.162 -49 37 22.19 V W68
2025-07-16 07:24:48 C 23 19 54.065 -49 37 52.61 V W68
2025-07-16 07:29:25 C 23 19 55.226 -49 38 10.00 V W68
2025-07-20 04:52:44 C 23 45 08.594 -55 21 33.95 V W68
2025-07-20 04:55:20 C 23 45 09.324 -55 21 43.16 V W68
2025-07-20 05:00:46 C 23 45 10.855 -55 22 03.18 V W68
2025-07-20 05:37:12 C 23 45 21.629 -55 24 14.29 V W68
2025-07-24 07:00:02 C 00 18 03.473 -60 51 05.33 V W68
2025-07-24 07:10:55 C 00 18 07.454 -60 51 40.68 V W68
2025-07-24 07:42:20 C 00 18 18.917 -60 53 19.03 V W68
2025-07-24 07:44:59 C 00 18 19.975 -60 53 27.74 V W68
2025-07-26 02:50:28 C 00 35 18.086 -63 02 25.84 V M22
2025-07-26 02:57:04 C 00 35 20.678 -63 02 44.99 V M22
2025-07-26 03:44:53 C 00 35 39.953 -63 05 01.46 V M22
2025-07-26 03:52:50 C 00 35 43.128 -63 05 24.04 V M22
2025-08-12 08:29:01 C 04 15 54.403 -72 11 14.06 V W68
2025-08-12 08:39:12 C 04 15 59.266 -72 11 13.42 V W68
2025-08-12 08:49:23 C 04 16 04.298 -72 11 13.85 V W68
2025-08-12 08:59:34 C 04 16 09.456 -72 11 12.84 V W68
2025-11-13 22:51:10 C 07 05 39.984 -54 28 41.16 V M22
2025-11-13 23:24:09 C 07 05 36.917 -54 28 16.57 V M22
2025-11-13 23:28:11 C 07 05 36.646 -54 28 14.16 V M22
2025-11-13 23:32:45 C 07 05 36.216 -54 28 10.34 V M22
2025-11-20 00:12:34 C 06 51 37.598 -52 19 18.80 V M22
2025-11-20 00:20:30 C 06 51 36.778 -52 19 12.07 V M22