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
1999-04-18 03:25:54 C 12 37 00.15 +00 25 00.9 860
1999-04-18 03:34:43 C 12 36 59.63 +00 25 37.6 860
1999-04-18 03:42:39 C 12 36 59.23 +00 26 10.1 860
1999-04-18 03:49:42 C 12 36 58.88 +00 26 39.9 860
1999-04-18 19:55:52 C 12 36 24.97 +01 30 17.0 557
1999-04-18 19:57:33 C 12 36 24.93 +01 30 23.0 557
1999-04-18 19:59:14 C 12 36 24.84 +01 30 29.5 557
1999-04-18 20:00:55 C 12 36 24.77 +01 30 35.9 557
1999-04-18 20:02:36 C 12 36 24.70 +01 30 42.8 557
1999-04-19 03:27:38 C 12 36 10.01 +01 58 39.5 17.7 a 704
1999-04-19 03:51:21 C 12 36 09.05 +02 00 07.5 18.6 a 704
1999-04-19 04:15:01 C 12 36 08.00 +02 01 34.4 18.3 a 704
1999-04-19 04:38:30 C 12 36 06.94 +02 03 00.1 18.6 a 704
1999-04-19 05:02:03 C 12 36 05.87 +02 04 26.6 18.4 a 704
1999-04-19 19:55:01 C 12 35 38.58 +02 56 19.6 z 104
1999-04-19 19:57:39 C 12 35 38.48 +02 56 28.9 z 104
1999-04-19 20:00:19 C 12 35 38.39 +02 56 36.9 z 104
1999-04-19 22:42:02 C 12 35 32.32 +03 05 32.2 621
1999-04-19 22:48:21 C 12 35 32.07 +03 05 53.3 621
1999-04-19 22:54:40 C 12 35 31.84 +03 06 14.3 621
1999-04-19 23:01:00 C 12 35 31.62 +03 06 34.7 621
1999-04-19 23:07:18 C 12 35 31.38 +03 06 55.7 621
1999-04-19 23:13:37 C 12 35 31.16 +03 07 16.6 621
1999-04-19 23:19:57 C 12 35 30.92 +03 07 37.2 621
1999-04-20 01:42:29 C 12 35 25.90 +03 15 22.8 621
1999-04-20 01:43:48 C 12 35 25.87 +03 15 27.0 621
1999-04-20 01:45:08 C 12 35 25.82 +03 15 31.4 621
1999-04-20 01:49:28 C 12 35 25.41 +03 15 46.0 b 118
1999-04-20 01:51:37 C 12 35 25.31 +03 15 52.5 b 118
1999-04-20 01:58:50 C 12 35 25.09 +03 16 16.4 b 118
1999-04-20 11:30:14 C 12 35 12.80 +03 46 33.7 360
1999-04-20 11:33:30 C 12 35 12.68 +03 46 43.8 360
1999-05-15 10:24:29 C 12 37 56.49 +13 47 47.2 426
1999-05-15 10:33:35 C 12 37 56.68 +13 47 48.7 426
2004-04-19 08:56:55 C 16 18 21.44 -00 03 00.2 d 291
2004-04-19 09:18:12 C 16 18 18.75 -00 02 25.2 d 291
2004-04-19 09:38:14 C 16 18 16.01 -00 01 55.1 d 291
2004-04-20 08:56:22 C 16 15 15.71 +00 35 18.6 d 291
2004-04-20 09:02:01 C 16 15 14.99 +00 35 27.5 d 291
2004-04-20 09:07:54 C 16 15 14.13 +00 35 37.1 d 291
2008-06-11 05:51:18 C 18 15 02.43 +22 25 59.7 22.3 o H55
2008-06-11 06:08:44 C 18 15 00.79 +22 26 11.1 22.2 o H55
2008-06-11 06:26:04 C 18 14 59.21 +22 26 23.0 o H55
2009-04-17 08:26:25 C 17 24 14.56 -00 23 07.5 o H55
2009-04-17 08:59:55 C 17 24 12.71 -00 22 31.3 o H55
2009-04-17 09:32:35 C 17 24 10.99 -00 21 55.0 o H55
2010-04-23 02:43:16 S 08 24 35.678 +09 25 34.32 L C51
2010-04-23 05:53:58 S 08 26 11.244 +09 31 02.75 L C51
2010-04-23 07:29:08 S 08 26 58.699 +09 33 45.58 L C51
2010-04-23 09:04:29 S 08 27 46.097 +09 36 27.07 L C51