SpaceAtlas Space Object Data
NASA JPL SBDB · 673675

673675

673675 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.082 AU it takes 3.00 yr to circle the Sun.

Apollo Observations: 113
Orbital Period · P
3.00 yr
v(q)
39.9 km/s
v(Q)
10.7 km/s
Diameter · ≈
0.11 km
TJ
3.53
Eccentricity · e
0.5771

Orbit and dynamics

Between its closest point (0.88 AU) and its farthest (3.284 AU), the heliocentric distance changes by 2.404 AU over every revolution.

One full revolution takes 3.00 yr (1,097 days), computed from the semi-major axis of 2.082 AU.

The high eccentricity (0.577) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 4.68° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 39.9 km/s at perihelion and falls to 10.7 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 = 22.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.11 km.

Observation record and orbit quality

Astrometry from 113 individual observations underpins this orbit; the fit leaves an RMS residual of 0.577 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
2.082 AU
Eccentricity
0.5771
Perihelion
0.88 AU
Aphelion
3.283522 AU
Inclination
4.68°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
278.41°

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
2027-Mar-17 03:25 0.048258 AU
7219254 km
11.75 km/s
2030-Mar-21 12:49 0.063963 AU
9568692 km
12.75 km/s
2033-Mar-26 17:26 0.100870 AU
15089981 km
14.24 km/s
2036-Mar-31 08:39 0.158616 AU
23728686 km
16.11 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
22.5

Orbit Quality

RMS
0.57698
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.