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(137108) 1999 AN10

Kilometer-length near-Earth asteroid and potentially hazardous asteroid

Field	Value
minorplanet	yes
background	#FFC2E0
name
discoverer	LINEAR
discovered	13 January 1999
mpc_name
mp_category	{{Hlist
orbit_ref
epoch	13 September 2023
(JD 2453300.5)
observation_arc	66.97 yr
uncertainty	0
earliest_precovery_date	26 January 1955
aphelion	2.28 AU
perihelion	0.638 AU
time_periastron	5 December 2023
semimajor	1.46 AU
eccentricity	0.56224
period	1.76 yr (643.37 d)
inclination	39.929°
asc_node	314.35°
mean_motion	/ day (n)
arg_peri	268.33°
mean_anomaly	313.20°
moid	0.00015 AU
dimensions	800–1800 m
sidereal_day
mass	~
escape_velocity	~2.8 km/h
abs_magnitude	18.1

| NEO | Apollo | PHA (JD 2453300.5)

**** is a kilometer-length near-Earth asteroid and potentially hazardous asteroid of the Apollo group. It was discovered by LINEAR on 13 January 1999.

On 7 August 2027, this asteroid will pass at about 0.00261 AU of the Earth's center. During the close approach, it is expected to peak at about apparent magnitude 7.3, and will be visible in binoculars.

has a well-determined orbit with an observation arc of 65 years. It was found by Andreas Doppler and Arno Gnädig in precovery images from 1955. When astronomers had an observation arc of the object of 123 days, computations gave a 1 in 10 million chance it would return on an impact trajectory in 2039.

On 7 August 1946, the asteroid passed 0.00625 AU from Earth and then 0.00404 AU from the Moon.

Date	JPL SBDB
nominal geocentric
distance (AU)	uncertainty
region
([3-sigma](3-sigma))
1946-08-07	0.006250 AU	±900 km
2027-08-07	0.002606 AU	±160 km
2076-02-04	0.027021 AU	±154 thousand km
2198-02-01	0.063727 AU	±800 thousand km

Date & Time	Approach
to	Nominal distance
2027-Aug-07 06:48	Moon
2027-Aug-07 07:11	Earth

References

|archive-url = https://web.archive.org/web/20120224231108/http://earn.dlr.de/nea/137108.htm |archive-date = 24 February 2012 |url-status = dead

|url-status=live}}

|url-status = live}}

|url-status=dead}}

References

assume radius of 0.650 km; [[Volume#Formulas. volume of a sphere]] * assume density of 2.6g/cm³ (though it could be a loose [[rubble pile]]) yields a mass of {{Val. 2.99e12

Info: Wikipedia Source

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apollo-asteroids discoveries-by-linear potentially-hazardous-asteroids astronomical-objects-discovered-in-1999

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