SpaceAtlas Space Object Data
NASA JPL SBDB · 2011 VH5

2011 VH5

2011 VH5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.321 AU it takes 1.52 yr to circle the Sun.

Apollo Observations: 46
Orbital Period · P
1.52 yr
v(q)
40.4 km/s
v(Q)
16.6 km/s
Diameter · ≈
0.18 km
TJ
4.85
Eccentricity · e
0.4172

Orbit and dynamics

Between its closest point (0.77 AU) and its farthest (1.872 AU), the heliocentric distance changes by 1.102 AU over every revolution.

One full revolution takes 1.52 yr (555 days), computed from the semi-major axis of 1.321 AU.

The high eccentricity (0.417) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.02° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 40.4 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 = 21.46 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.18 km.

Observation record and orbit quality

Astrometry from 46 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5149 arcseconds.

Condition code U = 1 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
1.321 AU
Eccentricity
0.4172
Perihelion
0.77 AU
Aphelion
1.872121 AU
Inclination
8.02°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
136.97°

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
2043-Dec-11 22:52 0.331378 AU
49573388 km
20.63 km/s
2046-Dec-24 14:40 0.153331 AU
22938012 km
13.58 km/s
2050-Jan-27 10:13 0.190092 AU
28437356 km
9.31 km/s
2052-Dec-02 18:41 0.425598 AU
63668592 km
7.10 km/s
2053-Mar-13 05:09 0.227072 AU
33969417 km
11.43 km/s
2053-Jun-25 00:16 0.464444 AU
69479903 km
6.14 km/s
2056-Apr-23 16:31 0.183480 AU
27448258 km
10.15 km/s
2059-May-31 00:32 0.124792 AU
18668621 km
12.64 km/s
2062-Jun-15 01:24 0.284691 AU
42589140 km
19.09 km/s
2065-Jun-26 21:00 0.497384 AU
74407598 km
25.68 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
21.46

Orbit Quality

RMS
0.51494
Condition
1
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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