SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 GU4

2007 GU4

2007 GU4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.203 AU it takes 1.32 yr to circle the Sun.

Apollo Observations: 94
Orbital Period · P
1.32 yr
v(q)
44.4 km/s
v(Q)
16.6 km/s
Diameter · ≈
0.1 km
TJ
5.18
Eccentricity · e
0.4566

Orbit and dynamics

Between its closest point (0.654 AU) and its farthest (1.752 AU), the heliocentric distance changes by 1.098 AU over every revolution.

One full revolution takes 1.32 yr (482 days), computed from the semi-major axis of 1.203 AU.

The high eccentricity (0.457) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 3.16° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 44.4 km/s at perihelion and falls to 16.6 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 = 22.65 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

Astrometry from 94 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4784 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
1.203 AU
Eccentricity
0.4566
Perihelion
0.654 AU
Aphelion
1.75229 AU
Inclination
3.16°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
242.41°

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
2030-Sep-03 15:40 0.399846 AU
59816157 km
25.35 km/s
2032-Apr-17 23:31 0.333702 AU
49921167 km
23.39 km/s
2036-Apr-05 08:44 0.078939 AU
11809076 km
15.66 km/s
2040-Mar-17 00:53 0.175713 AU
26286249 km
8.52 km/s
2044-Jan-24 19:29 0.308701 AU
46181059 km
12.90 km/s
2044-Apr-22 17:46 0.412569 AU
61719481 km
8.21 km/s
2047-Aug-21 03:20 0.496270 AU
74240957 km
9.70 km/s
2047-Dec-21 03:16 0.330867 AU
49497028 km
14.09 km/s
2051-Sep-21 02:24 0.319915 AU
47858639 km
6.19 km/s
2051-Nov-12 20:37 0.274099 AU
41004686 km
10.74 km/s
2055-Sep-26 11:26 0.058544 AU
8758056 km
11.82 km/s
2059-Sep-13 16:52 0.199817 AU
29892196 km
19.34 km/s
2063-Sep-01 20:03 0.449754 AU
67282211 km
26.85 km/s
2065-Apr-15 20:12 0.278879 AU
41719747 km
21.72 km/s
2069-Apr-02 06:38 0.029554 AU
4421172 km
13.59 km/s
2073-Feb-22 02:05 0.243033 AU
36357204 km
9.67 km/s
2077-Jan-12 22:15 0.323305 AU
48365679 km
13.75 km/s
2077-Apr-30 19:14 0.463797 AU
69383105 km
9.07 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
22.65

Orbit Quality

RMS
0.4784
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.