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(251732) 1998 HG49

Sub-kilometer asteroid and near-Earth object

Field	Value
minorplanet	yes
name
background	#FFC2E0
discovery_ref
discoverer	Spacewatch
discovery_site	Kitt Peak National Obs.
discovered	27 April 1998
mpc_name
alt_names
named_after
mp_category	{{Hlist
NEO<ref name	"jpldata" /
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	16.91 yr (6,175 days)
aphelion	1.3357 AU
perihelion	1.0654 AU
semimajor	1.2006 AU
eccentricity	0.1126
period	1.32 yr (480 days)
mean_anomaly	100.57°
mean_motion	/ day
inclination	4.1954°
asc_node	44.829°
arg_peri	324.29°
moid	0.0767 AU (29.9 LD)
mean_diameter	0.13–0.29 km (estimate)
abs_magnitude	{{Ubl
21.7<ref name	jpldata/
21.8<ref name	NeoDys/

| Amor | NEO | 21.7 | 21.8 ****, provisional designation , is a sub-kilometer asteroid and near-Earth object of the Amor group, approximately 200 meters in diameter. It was discovered on 27 April 1998 by astronomers of the Spacewatch program at the Kitt Peak National Observatory near Tucson, Arizona, United States.

Description

is an Amor asteroid because its perihelion is less than 1.3 AU and does not cross Earth's orbit. It is on a low-eccentricity and low-inclination orbit between the orbits of Earth and Mars. This is within a region of stability where bodies may survive for the age of the Solar System, and hence it may have formed near its current orbit.

The asteroid orbits the Sun at a distance of 1.1–1.3 AU once every 1 year and 4 months (480 days; semi-major axis of 1.20 AU). Its orbit has an eccentricity of 0.11 and an inclination of 4° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Kitt Peak in April 1998.

Between 1900 and 2200 its closest approach to Earth is more than 0.14 AU.

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 28 November 2010. As of 2018, it has not been named.

References

[https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=251732;orb=0;cov=0;log=0;cad=1#cad JPL close-approach data] Retrieved 2011-09-05
[https://newton.spacedys.com/neodys2/index.php?pc=1.1.9&n=251732 NeoDys-2] Retrieved 2011-09-05

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

amor-asteroids discoveries-by-the-spacewatch-project earth–mars-belt astronomical-objects-discovered-in-1998

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