SpaceAtlas Space Object Data
NASA JPL SBDB · 2010 WH1

2010 WH1

2010 WH1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.077 AU it takes 1.12 yr to circle the Sun.

Apollo Observations: 23
Orbital Period · P
1.12 yr
v(q)
33.7 km/s
v(Q)
24.5 km/s
Diameter · ≈
0.02 km
TJ
5.71
Eccentricity · e
0.1575

Orbit and dynamics

Between its closest point (0.907 AU) and its farthest (1.247 AU), the heliocentric distance changes by 0.34 AU over every revolution.

One full revolution takes 1.12 yr (408 days), computed from the semi-major axis of 1.077 AU.

An eccentricity of 0.158 makes the orbit moderately elongated.

The orbital plane is tilted 12.22° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.7 km/s at perihelion and falls to 24.5 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 = 26.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 23 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5666 arcseconds.

Condition code U = 2 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
1.077 AU
Eccentricity
0.1575
Perihelion
0.907 AU
Aphelion
1.246627 AU
Inclination
12.22°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
29.93°

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
2028-May-21 16:35 0.389646 AU
58290147 km
17.24 km/s
2029-Apr-19 09:42 0.284674 AU
42586689 km
6.20 km/s
2029-Nov-20 09:00 0.060196 AU
9005139 km
7.20 km/s
2038-May-31 10:54 0.110790 AU
16573963 km
9.89 km/s
2039-Feb-14 18:35 0.343859 AU
51440612 km
5.56 km/s
2039-Nov-28 07:06 0.236236 AU
35340370 km
13.41 km/s
2048-May-25 11:14 0.156105 AU
23352945 km
6.34 km/s
2048-Dec-09 05:24 0.225324 AU
33707923 km
6.38 km/s
2049-Dec-07 17:11 0.496424 AU
74264022 km
20.70 km/s
2057-May-25 07:03 0.295304 AU
44176912 km
14.66 km/s
2058-Mar-29 18:30 0.323310 AU
48366461 km
5.92 km/s
2058-Nov-21 23:59 0.050573 AU
7565610 km
8.75 km/s
2067-Jun-02 08:34 0.057549 AU
8609258 km
7.33 km/s
2068-Jan-11 15:18 0.304125 AU
45496458 km
5.96 km/s
2068-Dec-03 04:06 0.388879 AU
58175484 km
17.62 km/s
2076-May-24 05:51 0.327538 AU
48998913 km
15.53 km/s
2077-Apr-04 08:42 0.315400 AU
47183143 km
6.01 km/s
2077-Nov-21 06:26 0.037670 AU
5635310 km
8.37 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
26.2

Orbit Quality

RMS
0.56659
Condition
2
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.