1999 YD

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5933523162 ± 2.47e-05
Semi-major axis (a)2.4638809537 AU ± 1.02e-04
Inclination (i)1.37531178° ± 2.89e-05
Long. of Asc. Node (Ω)9.34240670° ± 5.84e-04
Arg. of Perihelion (ω)61.87478912° ± 5.85e-04
Mean Anomaly (M)257.48821032° ± 1.66e-01
Mean Motion (n)0.2548488602°/day ± 1.58e-05
Perihelion dist (q)1.00193148 AU ± 7.35e-05
Aphelion dist (Q)3.92583042 AU ± 1.73e-04
Orbital Period3.86749339 yr ± 2.40e-04
Physical Parameters
H (abs. magnitude)21.10
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.387″
Uncertainty3
Orbit TypeApollo
MOID0.025539 AU
Observations Used98
Oppositions1
Arc Total1999-2000
First Observation Used1999-12-17
Last Observation Used2000-02-26
Observations (99)
Date Type RA Dec Mag Band Observatory
1999-12-17 08:47:17 C 08 33 45.84 +50 44 32.1 16.5 a 704
1999-12-17 09:08:33 C 08 33 57.00 +50 42 04.7 16.5 a 704
1999-12-17 09:29:57 C 08 34 08.14 +50 39 35.4 16.5 a 704
1999-12-17 09:51:15 C 08 34 19.17 +50 37 06.2 16.3 a 704
1999-12-17 10:12:26 C 08 34 30.08 +50 34 36.9 16.0 a 704
1999-12-18 00:44:23 C 08 42 30.46 +48 54 39.4 b 946
1999-12-18 00:48:03 C 08 42 31.90 +48 54 17.7 b 946
1999-12-18 08:30:51 C 08 46 13.27 +48 04 24.5 16.8 a 704
1999-12-18 08:51:56 C 08 46 21.74 +48 02 13.1 17.2 a 704
1999-12-18 09:13:02 C 08 46 30.14 +48 00 00.7 16.8 a 704
1999-12-18 09:34:19 C 08 46 38.56 +47 57 46.6 16.8 a 704
1999-12-18 09:55:31 C 08 46 46.86 +47 55 32.1 17.0 a 704
1999-12-19 10:11:01 C 08 56 35.63 +45 28 52.0 16.5 a 704
1999-12-19 10:11:21 C 08 56 35.74 +45 28 50.3 16.5 a 704
1999-12-19 10:33:36 C 08 56 42.46 +45 26 42.6 16.8 a 704
1999-12-19 10:33:55 C 08 56 42.57 +45 26 40.9 16.7 a 704
1999-12-19 10:37:45 C 08 56 46.51 +45 26 16.9 i 670
1999-12-19 10:55:54 C 08 56 49.25 +45 24 33.3 16.9 a 704
1999-12-19 10:56:13 C 08 56 49.31 +45 24 32.5 17.4 a 704
1999-12-19 11:18:08 C 08 56 55.87 +45 22 25.1 16.8 a 704
1999-12-19 11:18:28 C 08 56 56.03 +45 22 23.8 16.6 a 704
1999-12-19 11:40:31 C 08 57 02.61 +45 20 14.7 16.7 a 704
1999-12-19 11:40:50 C 08 57 02.79 +45 20 13.3 16.7 a 704
1999-12-19 12:14:49 C 08 57 15.55 +45 17 01.5 i 670
1999-12-19 13:14:56 C 08 57 33.75 +45 11 10.3 i 670
1999-12-19 15:46:54 C 08 58 40.20 +44 56 54.5 z 900
1999-12-19 15:57:34 C 08 58 43.34 +44 55 57.5 z 900
1999-12-19 20:00:06 C 09 00 07.86 +44 31 55.7 c 046
1999-12-19 20:02:29 C 09 00 08.49 +44 31 43.6 c 046
1999-12-19 20:03:46 C 09 00 08.95 +44 31 37.4 c 046
1999-12-19 20:05:34 C 09 00 09.56 +44 31 28.3 c 046
1999-12-19 20:06:37 C 09 00 09.86 +44 31 22.2 c 046
1999-12-19 20:07:36 C 09 00 10.25 +44 31 17.9 c 046
1999-12-19 20:09:29 C 09 00 10.79 +44 31 08.5 c 046
1999-12-19 21:44:58 C 09 00 40.79 +44 22 56.5 557
1999-12-19 21:46:03 C 09 00 41.06 +44 22 49.9 557
1999-12-19 21:47:09 C 09 00 41.44 +44 22 45.1 557
1999-12-19 21:48:15 C 09 00 41.80 +44 22 39.5 557
1999-12-19 21:49:21 C 09 00 42.09 +44 22 33.3 557
1999-12-20 09:02:13 C 09 04 03.75 +43 24 37.2 16.3 a 704
1999-12-20 09:24:04 C 09 04 09.06 +43 22 47.1 16.8 a 704
1999-12-20 09:45:57 C 09 04 14.27 +43 20 56.2 16.1 a 704
1999-12-20 10:08:15 C 09 04 19.48 +43 19 02.1 17.9 a 704
1999-12-20 10:30:09 C 09 04 24.75 +43 17 10.1 16.9 a 704
1999-12-20 10:52:48 C 09 04 32.82 +43 15 11.4 i 670
1999-12-20 11:59:54 C 09 04 48.48 +43 09 29.5 i 670
1999-12-20 12:52:19 C 09 05 00.89 +43 04 57.2 i 670
1999-12-21 12:07:11 C 09 11 00.36 +41 13 26.8 i 670
1999-12-21 12:47:03 C 09 11 07.76 +41 10 22.2 i 670
1999-12-21 17:42:21 C 09 12 19.34 +40 48 22.8 i 888