Asteroid General Data

2018 HD

General information

Preliminary designation	2018 HD
Group	Apollo
Absolute magnitude	27.32
Approximate diameter (m)	9
Approximate mass (kg)	1.39·10⁶
Number of observations	21
Arc length (days)	6

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	47.402541
a – orbit major semiaxis (astronomical units)	1.93999900
e – orbit eccentricity	0.47868700
ω – orbit ascending node-perihelion angle (degrees)	341.511312
Ω – longitude of orbit ascending node (degrees)	205.841643
i – orbit inclination to the ecliptic plane (degrees)	4.643091

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	357.382399	1.94326837	0.47954973	336.999632	208.620145	4.394319	1.01137454	2.708942
01/21/1858	254.967704	1.94374702	0.47869126	337.601310	208.241859	4.424360	1.01329231	2.709943
01/29/1887	152.294342	1.94075319	0.47926359	338.397303	207.698965	4.484223	1.01062084	2.703685
02/07/1916	55.419574	1.94043681	0.47975181	338.933594	207.356388	4.511003	1.00950873	2.703024
02/14/1945	320.201563	1.93916785	0.47898832	339.573911	206.968279	4.541234	1.01032910	2.700373
02/22/1974	231.897692	1.93621467	0.47856197	340.279054	206.500236	4.584477	1.00961596	2.694206
03/02/2003	146.964225	1.93696076	0.47799533	340.812071	206.168994	4.608088	1.01110256	2.695764
03/09/2032	56.843622	1.94022522	0.47859663	341.582226	205.816077	4.644332	1.01163997	2.702582
03/17/2061	320.823421	1.94098374	0.47877162	342.087689	205.476156	4.670440	1.01169582	2.704167
03/25/2090	225.321836	1.94010706	0.47844634	342.655062	205.189116	4.695892	1.01186994	2.702335
04/03/2119	138.821780	1.93546304	0.47793900	343.425005	204.679755	4.757717	1.01042978	2.692638
04/10/2148	54.222381	1.93618924	0.47765435	343.908998	204.403782	4.779285	1.01136004	2.694153
04/18/2177	318.691235	1.94010882	0.47884796	344.627654	204.041548	4.800835	1.01109166	2.702338

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