SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 EE7

2015 EE7

2015 EE7 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.702 AU it takes 2.22 yr to circle the Sun.

Apollo Observations: 295
Orbital Period · P
2.22 yr
v(q)
35.3 km/s
v(Q)
14.8 km/s
Diameter · ≈
0.31 km
TJ
3.98
Eccentricity · e
0.411

Orbit and dynamics

Between its closest point (1.002 AU) and its farthest (2.402 AU), the heliocentric distance changes by 1.4 AU over every revolution.

One full revolution takes 2.22 yr (811 days), computed from the semi-major axis of 1.702 AU.

The high eccentricity (0.411) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 27.3° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 35.3 km/s at perihelion and falls to 14.8 km/s at aphelion.

Size and surface

The measured diameter is 0.29 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.17 points to a comparatively bright, reflective surface.

Observation record and orbit quality

Astrometry from 295 individual observations underpins this orbit; the fit leaves an RMS residual of 0.28 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
1.702 AU
Eccentricity
0.411
Perihelion
1.002 AU
Aphelion
2.401522 AU
Inclination
27.3°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
357.51°

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
2035-Mar-31 17:57 0.079607 AU
11909020 km
17.20 km/s
2055-Mar-24 22:30 0.211694 AU
31668951 km
19.69 km/s
2066-Apr-22 23:21 0.407248 AU
60923411 km
15.82 km/s
2075-Mar-16 19:15 0.394751 AU
59053976 km
23.49 km/s

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

Physical Parameters

Diameter
0.294 km
Albedo
0.17
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
20.28

Orbit Quality

RMS
0.27998
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.