SpaceAtlas Space Object Data
NASA JPL SBDB · 2003 QB30

2003 QB30

2003 QB30 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.231 AU it takes 1.37 yr to circle the Sun.

Apollo Observations: 32
Orbital Period · P
1.37 yr
v(q)
41.9 km/s
v(Q)
17.2 km/s
Diameter · ≈
0.02 km
TJ
5.11
Eccentricity · e
0.4177

Orbit and dynamics

Between its closest point (0.717 AU) and its farthest (1.745 AU), the heliocentric distance changes by 1.028 AU over every revolution.

One full revolution takes 1.37 yr (499 days), computed from the semi-major axis of 1.231 AU.

The high eccentricity (0.418) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 0.64° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 41.9 km/s at perihelion and falls to 17.2 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 = 26.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 32 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6161 arcseconds.

Condition code U = 4 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
1.231 AU
Eccentricity
0.4177
Perihelion
0.717 AU
Aphelion
1.745189 AU
Inclination
0.64°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
204.7°

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
2027-Mar-05 17:15 0.303217 AU
45360604 km
21.13 km/s
2029-Aug-08 03:07 0.357147 AU
53428438 km
22.54 km/s
2033-Oct-07 16:59 0.213693 AU
31968041 km
9.01 km/s
2038-Jan-30 14:25 0.151762 AU
22703337 km
7.83 km/s
2042-Mar-14 09:23 0.488331 AU
73053300 km
26.74 km/s
2044-Aug-18 05:23 0.152727 AU
22847596 km
16.50 km/s
2048-Jul-26 09:37 0.443933 AU
66411463 km
8.03 km/s
2048-Nov-18 08:52 0.270403 AU
40451772 km
11.71 km/s
2049-Mar-26 14:56 0.474405 AU
70969980 km
8.83 km/s
2053-Feb-24 12:39 0.121750 AU
18213591 km
15.71 km/s
2055-Aug-02 11:33 0.490881 AU
73434733 km
26.54 km/s
2059-Sep-16 00:44 0.156049 AU
23344659 km
7.82 km/s
2064-Jan-25 22:08 0.167490 AU
25056122 km
7.89 km/s
2070-Aug-20 04:12 0.129210 AU
19329533 km
15.79 km/s
2074-Jul-23 06:08 0.469834 AU
70286156 km
8.50 km/s
2074-Nov-25 22:08 0.270457 AU
40459808 km
11.73 km/s
2075-Mar-23 10:49 0.450016 AU
67321374 km
8.41 km/s
2079-Feb-27 18:36 0.171722 AU
25689264 km
17.18 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
26.8

Orbit Quality

RMS
0.61614
Condition
4
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.