SpaceAtlas Space Object Data
NASA JPL SBDB · 152637

152637

152637 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.865 AU and a period of 0.80 yr.

Aten Observations: 1,122
Orbital Period · P
0.80 yr
v(q)
39.6 km/s
v(Q)
25.9 km/s
Diameter · ≈
0.95 km
TJ
6.78
Eccentricity · e
0.2086

Orbit and dynamics

The path is an ellipse reaching 0.685 AU from the Sun at perihelion and 1.045 AU at aphelion, a radial span of 0.36 AU.

Applying Kepler's third law to a = 0.865 AU gives an orbital period of 0.80 yr, or about 294 days.

An eccentricity of 0.209 makes the orbit moderately elongated.

The orbital plane is tilted 16.73° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 39.6 km/s at perihelion and falls to 25.9 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 = 17.87 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.95 km.

Observation record and orbit quality

The current orbit solution is based on 1,122 observations and has a weighted RMS residual of 0.2897 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
0.8649 AU
Eccentricity
0.2086
Perihelion
0.685 AU
Aphelion
1.045318 AU
Inclination
16.73°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
131.01°

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-Jun-23 21:17 0.132005 AU
19747712 km
10.68 km/s
2051-Jul-12 16:21 0.196407 AU
29381996 km
9.85 km/s
2055-Jul-01 13:14 0.064092 AU
9587973 km
8.66 km/s
2059-Jun-25 03:18 0.069679 AU
10423848 km
9.59 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
17.87

Orbit Quality

RMS
0.2897
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.

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