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
2025-12-27 21:39:40 C 05 08 07.253 -15 40 28.67 V M22
2025-12-27 21:53:16 C 05 08 06.046 -15 39 39.53 V M22
2025-12-27 22:01:44 C 05 08 05.323 -15 39 09.04 V M22
2025-12-27 22:14:21 C 05 08 04.224 -15 38 23.50 V M22
2025-12-29 20:06:38 C 05 04 27.269 -12 53 14.78 V M22
2025-12-29 20:08:35 C 05 04 27.144 -12 53 07.55 V M22
2025-12-29 20:12:30 C 05 04 26.724 -12 52 53.65 V M22
2025-12-29 20:26:52 C 05 04 25.690 -12 52 00.98 V M22
2025-12-31 08:47:40 C 05 01 45.668 -10 42 12.59 X F51
2025-12-31 09:22:32 C 05 01 43.022 -10 40 08.20 X F51
2025-12-31 09:39:58 C 05 01 41.699 -10 39 06.15 X F51
2026-01-01 08:28:23 C 05 00 07.573 -09 18 07.79 X F52
2026-01-01 08:48:56 C 05 00 06.086 -09 16 55.15 X F52
2026-01-01 09:09:31 C 05 00 04.591 -09 15 42.44 X F52
2026-01-07 03:30:50 C 04 52 04.829 -01 23 07.51 V W68
2026-01-07 03:55:34 C 04 52 03.559 -01 21 46.30 V W68
2026-01-07 04:00:09 C 04 52 03.288 -01 21 32.04 V W68
2026-01-07 04:16:21 C 04 52 02.455 -01 20 39.12 V W68
2026-01-07 23:05:38 C 04 51 09.240 -00 19 40.87 V M22
2026-01-07 23:40:26 C 04 51 07.546 -00 17 50.53 V M22
2026-01-07 23:54:12 C 04 51 06.883 -00 17 05.57 V M22
2026-01-08 00:09:00 C 04 51 06.182 -00 16 18.41 V M22
2026-01-10 21:02:42 C 04 48 17.350 +03 18 25.27 V M22
2026-01-10 21:07:15 C 04 48 17.242 +03 18 39.60 V M22
2026-01-10 21:15:44 C 04 48 16.910 +03 19 05.23 V M22
2026-01-10 21:30:52 C 04 48 16.274 +03 19 50.99 V M22
2026-01-11 13:46:24 C 04 47 42.08 +04 08 14.7 V D29
2026-01-11 14:06:46 C 04 47 41.30 +04 09 15.3 V D29
2026-01-11 14:27:08 C 04 47 40.53 +04 10 15.5 V D29
2026-01-12 10:10:56 C 04 47 01.193 +05 08 18.49 V T08
2026-01-12 10:14:56 C 04 47 01.068 +05 08 30.08 V T08
2026-01-12 10:40:31 C 04 47 00.151 +05 09 44.42 V T08
2026-01-12 11:00:50 C 04 46 59.446 +05 10 43.57 V T08