SpaceAtlas Space Object Data
NASA JPL SBDB · 2000 AH205

2000 AH205

2000 AH205 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.148 AU it takes 1.23 yr to circle the Sun.

Apollo Observations: 81
Orbital Period · P
1.23 yr
v(q)
42.8 km/s
v(Q)
18 km/s
Diameter · ≈
0.11 km
TJ
5.39
Eccentricity · e
0.407

Orbit and dynamics

Between its closest point (0.681 AU) and its farthest (1.615 AU), the heliocentric distance changes by 0.934 AU over every revolution.

One full revolution takes 1.23 yr (449 days), computed from the semi-major axis of 1.148 AU.

The high eccentricity (0.407) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 2.59° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 42.8 km/s at perihelion and falls to 18 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 = 22.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.11 km.

Observation record and orbit quality

Astrometry from 81 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3503 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
1.148 AU
Eccentricity
0.407
Perihelion
0.681 AU
Aphelion
1.615236 AU
Inclination
2.59°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
257.05°

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
2026-Nov-10 04:32 0.264277 AU
39535272 km
10.33 km/s
2027-Jan-13 16:39 0.312162 AU
46698784 km
6.88 km/s
2031-May-18 16:42 0.424065 AU
63439157 km
8.82 km/s
2031-Sep-07 17:37 0.314488 AU
47046661 km
12.49 km/s
2036-Jun-26 07:02 0.119981 AU
17948960 km
9.03 km/s
2038-Jan-17 11:34 0.373846 AU
55926552 km
23.89 km/s
2041-Jun-09 16:25 0.208819 AU
31238935 km
18.62 km/s
2043-Jan-02 09:25 0.047470 AU
7101471 km
13.74 km/s
2047-Nov-20 00:31 0.240165 AU
35928244 km
9.30 km/s
2052-Oct-02 01:58 0.321057 AU
48029393 km
13.09 km/s
2053-Feb-09 05:50 0.468435 AU
70076940 km
9.72 km/s
2057-Jun-01 21:20 0.344515 AU
51538741 km
7.37 km/s
2057-Aug-18 18:30 0.284654 AU
42583705 km
10.83 km/s
2062-Jun-22 20:01 0.053775 AU
8044583 km
11.02 km/s
2064-Jan-15 15:58 0.321969 AU
48165827 km
22.29 km/s
2067-Jun-09 13:18 0.228491 AU
34181836 km
19.22 km/s
2069-Jan-01 14:07 0.041272 AU
6174194 km
13.54 km/s
2072-May-28 04:39 0.482456 AU
72174325 km
26.84 km/s
2073-Nov-28 02:34 0.217608 AU
32553645 km
8.41 km/s
2078-Oct-13 09:43 0.312320 AU
46722419 km
12.72 km/s
2079-Feb-03 10:32 0.430309 AU
64373383 km
9.11 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
22.6

Orbit Quality

RMS
0.35034
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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