SpaceAtlas Space Object Data
NASA JPL SBDB · 2000 GC147

2000 GC147

2000 GC147 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.779 AU once every 4.63 yr.

Amor Observations: 53
Orbital Period · P
4.63 yr
v(q)
36.4 km/s
v(Q)
8.8 km/s
Diameter · ≈
0.36 km
TJ
3.03
Eccentricity · e
0.6125

Orbit and dynamics

Between its closest point (1.077 AU) and its farthest (4.481 AU), the heliocentric distance changes by 3.404 AU over every revolution.

One full revolution takes 4.63 yr (1,692 days), computed from the semi-major axis of 2.779 AU.

The high eccentricity (0.613) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 2.33° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36.4 km/s at perihelion and falls to 8.8 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 20 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.36 km.

Observation record and orbit quality

Astrometry from 53 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4571 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
2.779 AU
Eccentricity
0.6125
Perihelion
1.077 AU
Aphelion
4.481137 AU
Inclination
2.33°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
246.83°

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-Nov-05 04:08 0.452279 AU
67659966 km
18.37 km/s
2065-Jan-23 08:11 0.435555 AU
65158146 km
16.90 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
20.0

Orbit Quality

RMS
0.45706
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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