399325 (1999 GY5)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6147513679 ± 1.29e-07
Semi-major axis (a)1.1464844965 AU ± 2.71e-09
Inclination (i)24.42691937° ± 1.18e-05
Long. of Asc. Node (Ω)203.36746632° ± 6.04e-06
Arg. of Perihelion (ω)232.23869490° ± 1.21e-05
Mean Anomaly (M)297.61767388° ± 3.94e-05
Mean Motion (n)0.8028972986°/day ± 2.85e-09
Perihelion dist (q)0.44168158 AU ± 1.47e-07
Aphelion dist (Q)1.85128741 AU ± 1.47e-07
Orbital Period1.22758700 yr ± 4.35e-09
Physical Parameters
H (abs. magnitude)20.18
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.449″
Uncertainty0
Orbit TypeApollo
MOID0.063615 AU
Observations Used180
Oppositions5
Arc Total1999-2025
First Observation Used1999-04-14
Last Observation Used2025-05-27
Observations (218)
Date Type RA Dec Mag Band Observatory
2010-04-23 10:39:50 S 08 28 33.338 +09 39 07.60 L C51
2010-04-23 13:50:21 S 08 30 07.243 +09 44 25.91 L C51
2010-04-23 17:00:52 S 08 31 40.541 +09 49 40.01 L C51
2010-04-28 02:42:32 C 09 17 36.44 +12 07 18.3 o H21
2010-04-28 02:57:37 C 09 17 42.14 +12 07 32.5 o H21
2010-06-14 23:20:30 S 12 20 26.65 +11 44 09.5 L C51
2010-06-15 02:31:01 S 12 20 42.01 +11 43 06.7 L C51
2010-06-15 05:41:33 S 12 20 57.17 +11 42 02.4 L C51
2010-06-15 12:02:35 S 12 21 27.92 +11 39 59.0 L C51
2010-06-15 15:13:05 S 12 21 43.09 +11 38 56.4 L C51
2010-06-15 18:23:37 S 12 21 58.31 +11 37 46.4 L C51
2010-06-15 19:58:47 S 12 22 06.13 +11 37 12.0 L C51
2010-06-15 21:34:08 S 12 22 13.56 +11 36 42.2 L C51
2010-06-15 23:09:18 S 12 22 21.158 +11 36 12.92 L C51
2010-06-16 00:44:39 S 12 22 28.78 +11 35 38.1 L C51
2010-06-16 02:19:49 S 12 22 36.26 +11 35 06.4 L C51
2010-06-16 05:30:20 S 12 22 51.52 +11 34 01.8 L C51
2010-06-16 11:51:22 S 12 23 21.73 +11 31 52.7 L C51
2010-06-16 15:01:53 S 12 23 36.883 +11 30 48.96 L C51
2010-06-16 18:12:24 S 12 23 52.145 +11 29 44.77 L C51
2014-05-26 07:19:55 C 17 11 29.31 +14 32 08.0 u H21
2014-05-26 07:33:54 C 17 11 27.91 +14 32 16.6 u H21
2014-05-26 07:50:12 C 17 11 26.35 +14 32 26.8 u H21
2014-06-21 04:14:27 C 16 15 08.27 +17 42 50.7 u H21
2014-06-21 05:16:55 C 16 15 03.30 +17 42 48.6 u H21
2015-04-05 09:50:26 C 16 33 50.38 -15 32 58.1 q H21
2015-04-05 10:06:09 C 16 33 46.67 -15 32 11.8 q H21
2015-04-10 10:03:58 C 16 06 59.73 -09 44 11.7 o 691
2015-04-10 10:27:43 C 16 06 54.41 -09 43 04.1 o 691
2015-04-13 08:57:21 C 15 51 35.52 -06 25 18.6 q 703
2015-04-13 09:11:45 C 15 51 32.47 -06 24 38.3 q 703
2015-04-13 09:18:57 C 15 51 30.83 -06 24 19.5 q 703
2015-04-14 08:30:56 C 15 46 35.16 -05 21 24.6 o 691
2015-04-14 08:55:45 C 15 46 29.78 -05 20 18.4 o 691
2015-04-14 09:16:50 C 15 46 25.27 -05 19 22.3 o 691
2015-04-14 17:31:56 C 15 44 41.09 -04 57 19.9 q D29
2015-04-14 18:10:01 C 15 44 32.81 -04 55 38.7 q D29
2015-04-20 07:59:03 C 15 17 46.07 +00 33 16.0 o 691
2015-04-20 08:27:31 C 15 17 40.52 +00 34 19.2 o 691
2015-04-20 08:55:59 C 15 17 34.98 +00 35 22.6 o 691
2015-04-21 00:44:04 C 15 14 37.41 +01 10 04.3 t 130
2015-04-21 00:49:48 C 15 14 36.33 +01 10 17.3 t 130
2015-04-21 00:55:33 C 15 14 35.21 +01 10 28.8 t 130
2015-04-24 12:49:20 C 14 59 41.213 +03 59 31.72 L F51
2015-04-24 13:30:12 C 14 59 34.089 +04 00 47.38 L F51
2015-04-24 13:50:44 C 14 59 30.528 +04 01 25.40 L F51
2018-07-21 18:57:54 S 22 10 17.498 +66 02 09.67 L C51
2018-07-21 22:06:13 S 22 10 38.628 +66 12 09.43 L C51
2018-07-21 22:06:24 S 22 10 38.462 +66 12 10.66 L C51
2018-07-22 01:14:43 S 22 11 00.310 +66 22 12.90 L C51