SpaceAtlas Space Object Data
NASA JPL SBDB · 269690

269690

269690 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.001 AU it takes 2.83 yr to circle the Sun.

Apollo Observations: 245
Orbital Period · P
2.83 yr
v(q)
42.4 km/s
v(Q)
10.5 km/s
Diameter · ≈
0.72 km
TJ
3.59
Eccentricity · e
0.6036

Orbit and dynamics

The path is an ellipse reaching 0.793 AU from the Sun at perihelion and 3.209 AU at aphelion, a radial span of 2.416 AU.

Applying Kepler's third law to a = 2.001 AU gives an orbital period of 2.83 yr, or about 1,034 days.

The high eccentricity (0.604) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 3.58° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 42.4 km/s at perihelion and falls to 10.5 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

The measured diameter is 0.89 km, a value from direct size determination rather than from brightness alone.

Its geometric albedo of 0.098 indicates a very dark, carbonaceous-type surface.

Observation record and orbit quality

The current orbit solution is based on 245 observations and has a weighted RMS residual of 0.5524 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
2.001 AU
Eccentricity
0.6036
Perihelion
0.793 AU
Aphelion
3.208804 AU
Inclination
3.58°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
146.23°

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
2028-Mar-26 15:47 0.418599 AU
62621542 km
26.79 km/s
2030-Nov-02 16:01 0.066223 AU
9906806 km
13.03 km/s
2045-Mar-28 17:14 0.449849 AU
67296480 km
27.66 km/s
2047-Nov-07 17:46 0.087945 AU
13156320 km
12.18 km/s
2062-Mar-25 07:00 0.365929 AU
54742134 km
25.29 km/s
2064-Oct-28 19:46 0.054303 AU
8123649 km
14.47 km/s
2079-Mar-11 23:53 0.122557 AU
18334254 km
18.11 km/s

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

Physical Parameters

Diameter
0.888 km
Albedo
0.098
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
18.47

Orbit Quality

RMS
0.55239
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.