SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 LA2

2015 LA2

2015 LA2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.883 AU and a period of 0.83 yr.

Aten Observations: 122
Orbital Period · P
0.83 yr
v(q)
42.3 km/s
v(Q)
23.8 km/s
Diameter · ≈
0.09 km
TJ
6.68
Eccentricity · e
0.2807

Orbit and dynamics

Between its closest point (0.635 AU) and its farthest (1.131 AU), the heliocentric distance changes by 0.496 AU over every revolution.

One full revolution takes 0.83 yr (303 days), computed from the semi-major axis of 0.883 AU.

An eccentricity of 0.281 makes the orbit moderately elongated.

The orbital plane is tilted 7.71° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 42.3 km/s at perihelion and falls to 23.8 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 23.01 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.09 km.

Observation record and orbit quality

Astrometry from 122 individual observations underpins this orbit; the fit leaves an RMS residual of 0.448 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
0.8828 AU
Eccentricity
0.2807
Perihelion
0.635 AU
Aphelion
1.130602 AU
Inclination
7.71°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
252.14°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2030-Aug-02 16:24 0.132588 AU
19834885 km
9.60 km/s
2044-May-07 05:25 0.121513 AU
18178027 km
9.57 km/s
2049-May-18 22:21 0.088850 AU
13291698 km
6.71 km/s
2054-Jun-11 16:30 0.112533 AU
16834659 km
6.59 km/s
2059-Jul-06 00:10 0.111503 AU
16680603 km
6.55 km/s
2064-Jul-27 19:49 0.097047 AU
14517982 km
7.20 km/s
2069-Aug-02 12:06 0.156958 AU
23480522 km
10.58 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
23.01

Orbit Quality

RMS
0.44797
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.