SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 DG8

2007 DG8

2007 DG8 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.357 AU it takes 1.58 yr to circle the Sun.

Apollo Observations: 74
Orbital Period · P
1.58 yr
v(q)
37.9 km/s
v(Q)
17.3 km/s
Diameter · ≈
0.03 km
TJ
4.78
Eccentricity · e
0.3736

Orbit and dynamics

The path is an ellipse reaching 0.85 AU from the Sun at perihelion and 1.864 AU at aphelion, a radial span of 1.014 AU.

Applying Kepler's third law to a = 1.357 AU gives an orbital period of 1.58 yr, or about 577 days.

An eccentricity of 0.374 makes the orbit moderately elongated.

Its inclination of 3.05° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 37.9 km/s at perihelion and falls to 17.3 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 = 25.09 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 74 observations and has a weighted RMS residual of 0.4392 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
1.357 AU
Eccentricity
0.3736
Perihelion
0.85 AU
Aphelion
1.863975 AU
Inclination
3.05°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
33.12°

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
2037-Jun-14 04:27 0.125004 AU
18700275 km
7.42 km/s
2045-Feb-18 05:57 0.152152 AU
22761611 km
14.40 km/s
2056-Apr-29 21:23 0.164606 AU
24624776 km
8.31 km/s
2067-Jul-20 22:33 0.113011 AU
16906278 km
13.18 km/s
2075-Mar-31 05:54 0.129909 AU
19434070 km
7.52 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
25.09

Orbit Quality

RMS
0.43923
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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