SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 GG135

2016 GG135

2016 GG135 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.327 AU it takes 1.53 yr to circle the Sun.

Apollo Observations: 87
Orbital Period · P
1.53 yr
v(q)
58.2 km/s
v(Q)
11.5 km/s
Diameter · ≈
0.25 km
TJ
4.61
Eccentricity · e
0.67

Orbit and dynamics

Between its closest point (0.438 AU) and its farthest (2.216 AU), the heliocentric distance changes by 1.778 AU over every revolution.

One full revolution takes 1.53 yr (558 days), computed from the semi-major axis of 1.327 AU.

The high eccentricity (0.67) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 24.06° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 58.2 km/s at perihelion and falls to 11.5 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 = 20.78 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.25 km.

Observation record and orbit quality

Astrometry from 87 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6087 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
1.327 AU
Eccentricity
0.67
Perihelion
0.438 AU
Aphelion
2.21609 AU
Inclination
24.06°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
187.29°

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
2031-Oct-20 01:22 0.496296 AU
74244859 km
26.21 km/s
2034-Nov-25 01:52 0.353351 AU
52860591 km
22.34 km/s
2037-Dec-22 08:30 0.337402 AU
50474635 km
28.45 km/s
2042-Apr-27 19:34 0.231338 AU
34607715 km
30.71 km/s
2045-May-10 08:00 0.138555 AU
20727606 km
21.57 km/s
2048-May-11 21:44 0.459120 AU
68683357 km
15.80 km/s
2060-Nov-16 08:59 0.386114 AU
57761770 km
22.52 km/s
2063-Dec-18 00:00 0.316326 AU
47321685 km
26.56 km/s
2068-Apr-24 04:06 0.303982 AU
45475068 km
32.96 km/s
2071-May-08 09:27 0.085069 AU
12726137 km
23.52 km/s
2074-May-14 06:47 0.385473 AU
57665978 km
16.44 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
20.78

Orbit Quality

RMS
0.6087
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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