Asteroid General Data

2018 UM₁

General information

Preliminary designation	2018 UM₁
Group	Apollo
Absolute magnitude	23.59
Approximate diameter (m)	51
Approximate mass (kg)	2.41·10⁸
Number of observations	201
Arc length (days)	4010

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	220.094005
a – orbit major semiaxis (astronomical units)	1.14344100
e – orbit eccentricity	0.17373400
ω – orbit ascending node-perihelion angle (degrees)	54.375770
Ω – longitude of orbit ascending node (degrees)	260.557902
i – orbit inclination to the ecliptic plane (degrees)	1.995044

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	194.058141	1.16978854	0.18475744	34.635100	274.082915	1.421362	0.95366140	1.265207
01/21/1858	165.332600	1.17107379	0.18531625	36.495934	272.757370	1.421671	0.95405479	1.267293
01/29/1887	136.139207	1.16803434	0.18420662	41.701869	268.641574	1.443639	0.95287468	1.262362
02/07/1916	133.599489	1.16779586	0.18402587	42.124347	267.967902	1.440046	0.95289122	1.261976
02/14/1945	168.417440	1.15649172	0.17951178	45.081781	266.958476	1.509152	0.94888783	1.243696
02/22/1974	290.059385	1.15643337	0.17931465	45.402468	266.693270	1.509034	0.94906793	1.243602
03/02/2003	116.423055	1.14109936	0.17258286	52.965928	261.536205	1.983401	0.94416516	1.218950
03/09/2032	32.865713	1.14482370	0.17394670	55.492762	259.656256	1.999951	0.94568540	1.224922
03/17/2061	287.867520	1.14093232	0.17265803	56.665252	259.330069	2.009381	0.94394120	1.218682
03/25/2090	217.626156	1.14107008	0.17268182	57.527535	258.223507	2.015752	0.94402802	1.218903
04/03/2119	110.479688	1.14790193	0.17487227	56.195470	257.497130	1.996925	0.94716571	1.229866
04/10/2148	338.438486	1.14651365	0.17411232	57.623108	255.876391	2.011345	0.94689150	1.227636
04/18/2177	257.516486	1.14153303	0.17231279	58.895472	255.555571	2.018424	0.94483229	1.219645

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