2018 DA4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7877206000
Semi-major axis (a)1.3469915000 AU
Inclination (i)22.05592000°
Long. of Asc. Node (Ω)357.72735000°
Arg. of Perihelion (ω)24.77298000°
Mean Anomaly (M)20.05043000°
Mean Motion (n)0.6304588900°/day
Perihelion dist (q)0.28593850 AU
Aphelion dist (Q)2.40804450 AU
Orbital Period1.56331780 yr
Physical Parameters
H (abs. magnitude)20.63
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.590″
Uncertainty7
Orbit TypeApollo
MOID0.168369 AU
Observations Used80
Oppositions1
Arc Total
First Observation Used
Last Observation Used2018-03-20
Observations (81)
Date Type RA Dec Mag Band Observatory
2018-03-07 04:38:38 C 11 26 23.57 +23 59 06.1 U I52
2018-03-07 04:39:14 C 11 26 23.37 +23 59 05.5 U I52
2018-03-07 08:24:21 C 11 25 17.78 +23 55 54.1 U 703
2018-03-07 08:25:28 C 11 25 18.639 +23 55 56.47 U F51
2018-03-07 08:31:58 C 11 25 15.57 +23 55 48.1 U 703
2018-03-07 08:39:34 C 11 25 13.41 +23 55 40.5 U 703
2018-03-07 08:42:13 C 11 25 13.820 +23 55 42.45 U F51
2018-03-07 08:47:11 C 11 25 11.19 +23 55 34.1 U 703
2018-03-07 08:59:00 C 11 25 08.950 +23 55 28.30 U F51
2018-03-10 08:11:26 C 11 06 47.313 +22 52 58.31 U F51
2018-03-10 08:12:22 C 11 06 47.087 +22 52 57.45 U F51
2018-03-10 08:28:26 C 11 06 43.257 +22 52 43.57 U F51
2018-03-10 08:29:22 C 11 06 43.046 +22 52 42.75 U F51
2018-03-10 08:45:25 C 11 06 39.204 +22 52 28.81 U F51
2018-03-10 08:46:21 C 11 06 38.982 +22 52 28.10 U F51
2018-03-10 09:02:28 C 11 06 35.131 +22 52 14.02 U F51
2018-03-10 09:03:24 C 11 06 34.907 +22 52 13.23 U F51
2018-03-13 04:44:10 C 10 52 14.44 +21 52 54.1 U I52
2018-03-13 04:44:45 C 10 52 14.32 +21 52 53.3 U I52
2018-03-13 04:51:06 C 10 52 13.09 +21 52 48.7 U I52
2018-03-16 06:47:35 C 10 39 24.61 +20 50 33.6 o 691
2018-03-16 07:01:18 C 10 39 22.45 +20 50 22.3 o 691
2018-03-16 07:15:03 C 10 39 20.25 +20 50 11.1 o 691
2018-03-17 09:49:14 C 10 35 22.14 +20 28 38.9 U I52
2018-03-17 09:50:19 C 10 35 21.96 +20 28 37.3 U I52
2018-03-17 09:51:25 C 10 35 21.78 +20 28 36.9 U I52
2018-03-17 09:57:22 C 10 35 20.91 +20 28 32.1 U I52
2018-03-20 05:49:37 C 10 26 33.77 +19 35 57.7 U I52
2018-03-20 05:53:18 C 10 26 33.33 +19 35 55.4 U I52
2018-03-20 05:56:58 C 10 26 32.89 +19 35 52.6 U I52
2018-03-20 06:00:38 C 10 26 32.42 +19 35 50.0 U I52