SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 QH33

2014 QH33

2014 QH33 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.084 AU it takes 1.13 yr to circle the Sun.

Apollo Observations: 124
Orbital Period · P
1.13 yr
v(q)
34.5 km/s
v(Q)
23.7 km/s
Diameter · ≈
0.05 km
TJ
5.7
Eccentricity · e
0.1846

Orbit and dynamics

Between its closest point (0.884 AU) and its farthest (1.284 AU), the heliocentric distance changes by 0.4 AU over every revolution.

One full revolution takes 1.13 yr (412 days), computed from the semi-major axis of 1.084 AU.

An eccentricity of 0.185 makes the orbit moderately elongated.

Its inclination of 2.83° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.5 km/s at perihelion and falls to 23.7 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 = 24.44 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 124 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4732 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
1.084 AU
Eccentricity
0.1846
Perihelion
0.884 AU
Aphelion
1.284106 AU
Inclination
2.83°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
225.53°

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-Apr-23 15:09 0.118580 AU
17739297 km
4.53 km/s
2031-Oct-15 19:36 0.254668 AU
38097816 km
5.42 km/s
2032-Sep-05 11:33 0.463477 AU
69335174 km
19.37 km/s
2039-Feb-15 02:20 0.439198 AU
65703118 km
18.93 km/s
2039-Dec-30 15:17 0.265955 AU
39786338 km
5.73 km/s
2040-Jul-14 11:55 0.100644 AU
15056095 km
3.99 km/s
2048-Feb-24 07:17 0.230899 AU
34542049 km
12.64 km/s
2048-Dec-02 23:18 0.299946 AU
44871291 km
6.41 km/s
2049-Aug-19 16:08 0.093329 AU
13961858 km
8.47 km/s
2057-Mar-09 00:10 0.015125 AU
2262606 km
5.52 km/s
2057-Oct-31 13:26 0.289635 AU
43328783 km
6.12 km/s
2058-Aug-31 17:00 0.369740 AU
55312361 km
16.59 km/s
2065-Feb-17 23:34 0.358663 AU
53655171 km
16.48 km/s
2065-Dec-15 17:04 0.292965 AU
43826932 km
6.24 km/s
2066-Aug-13 08:08 0.014918 AU
2231698 km
6.02 km/s
2074-Jan-13 01:04 0.242447 AU
36269524 km
5.17 km/s
2074-Jun-16 16:15 0.126060 AU
18858263 km
4.76 km/s
2074-Sep-07 07:48 0.173254 AU
25918359 km
3.32 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
24.44

Orbit Quality

RMS
0.47322
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.