1999 DY2

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4652684893
Semi-major axis (a)2.0377652659 AU
Inclination (i)7.63467507°
Long. of Asc. Node (Ω)352.13930788°
Arg. of Perihelion (ω)161.37821372°
Mean Anomaly (M)66.28661559°
Mean Motion (n)0.3388459500°/day
Perihelion dist (q)1.08966420 AU
Aphelion dist (Q)2.98568200 AU
Orbital Period2.90871900 yr
Physical Parameters
H (abs. magnitude)21.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.920″
Uncertainty
Orbit TypeAmor
MOID0.105016 AU
Observations Used83
Oppositions1
Arc Total1999-1999
First Observation Used
Last Observation Used1999-04-15
Observations (83)
Date Type RA Dec Mag Band Observatory
1999-03-09 21:33:09 C 11 14 25.68 +10 17 59.5 z 620
1999-03-09 21:45:30 C 11 14 26.59 +10 17 08.1 z 620
1999-03-09 21:55:01 C 11 14 27.25 +10 16 28.9 z 620
1999-03-12 00:08:15 C 11 18 27.85 +06 53 12.3 118
1999-03-12 00:18:26 C 11 18 28.50 +06 52 32.1 118
1999-03-12 12:19:31 C 11 19 27.46 +06 06 49.9 422
1999-03-12 12:20:45 C 11 19 27.56 +06 06 45.4 422
1999-03-12 12:27:42 C 11 19 27.95 +06 06 17.6 422
1999-03-13 23:07:28 C 11 22 03.59 +03 51 55.2 104
1999-03-13 23:10:08 C 11 22 03.75 +03 51 45.3 104
1999-03-13 23:12:48 C 11 22 03.92 +03 51 35.3 104
1999-03-15 12:58:41 C 11 24 48.40 +01 34 24.7 422
1999-03-15 13:01:58 C 11 24 48.68 +01 34 11.7 422
1999-03-15 21:52:29 C 11 25 26.27 +01 01 18.6 z 587
1999-03-15 21:56:59 C 11 25 26.51 +01 01 01.8 z 587
1999-03-15 23:10:45 C 11 25 30.20 +00 56 39.7 118
1999-03-15 23:14:21 C 11 25 30.42 +00 56 27.0 118
1999-03-16 16:07:30 C 11 26 39.78 -00 02 12.3 360
1999-03-16 16:12:00 C 11 26 39.99 -00 02 27.5 360
1999-03-16 16:15:29 C 11 26 40.19 -00 02 39.5 360
1999-03-18 23:23:02 C 11 30 20.39 -03 04 49.4 118
1999-03-18 23:24:25 C 11 30 20.48 -03 04 53.7 118
1999-03-18 23:27:35 C 11 30 20.68 -03 05 04.2 118
1999-03-20 05:02:36 C 11 32 15.63 -04 35 51.4 19.3 a 704
1999-03-20 05:28:39 C 11 32 16.76 -04 37 09.8 19.4 a 704
1999-03-20 05:54:34 C 11 32 18.01 -04 38 27.7 19.3 a 704
1999-03-20 06:20:35 C 11 32 19.30 -04 39 46.1 19.1 a 704
1999-03-20 06:46:40 C 11 32 20.40 -04 41 03.6 19.6 a 704
1999-04-15 12:45:13 C 12 04 51.61 -21 49 12.6 422
1999-04-15 12:46:31 C 12 04 51.69 -21 49 13.6 422
1999-04-15 12:48:36 C 12 04 51.73 -21 49 15.1 422
1999-04-15 12:54:50 C 12 04 52.03 -21 49 19.7 422
1999-04-15 12:56:33 C 12 04 52.06 -21 49 20.3 422