SpaceAtlas Space Object Data
NASA JPL SBDB · 674590

674590

674590 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.218 AU it takes 1.34 yr to circle the Sun.

Apollo Observations: 401
Orbital Period · P
1.34 yr
v(q)
35.5 km/s
v(Q)
20.5 km/s
Diameter · ≈
0.14 km
TJ
5.2
Eccentricity · e
0.2666

Orbit and dynamics

The path is an ellipse reaching 0.893 AU from the Sun at perihelion and 1.543 AU at aphelion, a radial span of 0.65 AU.

Applying Kepler's third law to a = 1.218 AU gives an orbital period of 1.34 yr, or about 491 days.

An eccentricity of 0.267 makes the orbit moderately elongated.

The orbital plane is tilted 5.36° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.5 km/s at perihelion and falls to 20.5 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

No direct size measurement is available; from an absolute magnitude of H = 22 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.14 km.

Observation record and orbit quality

The current orbit solution is based on 401 observations and has a weighted RMS residual of 0.3522 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
1.218 AU
Eccentricity
0.2666
Perihelion
0.893 AU
Aphelion
1.542719 AU
Inclination
5.36°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
290.02°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
22.0

Orbit Quality

RMS
0.35221
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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