SpaceAtlas Space Object Data
NASA JPL SBDB · 2001 FO127

2001 FO127

2001 FO127 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.888 AU and a period of 0.84 yr.

Aten Observations: 35
Orbital Period · P
0.84 yr
v(q)
37.1 km/s
v(Q)
26.9 km/s
Diameter · ≈
0.01 km
TJ
6.67
Eccentricity · e
0.1582

Orbit and dynamics

Between its closest point (0.748 AU) and its farthest (1.029 AU), the heliocentric distance changes by 0.281 AU over every revolution.

One full revolution takes 0.84 yr (306 days), computed from the semi-major axis of 0.888 AU.

An eccentricity of 0.158 makes the orbit moderately elongated.

The orbital plane is tilted 7.31° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37.1 km/s at perihelion and falls to 26.9 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 = 27.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 35 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5803 arcseconds.

Condition code U = 6 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
0.8884 AU
Eccentricity
0.1582
Perihelion
0.748 AU
Aphelion
1.028945 AU
Inclination
7.31°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
189.53°

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
2027-May-15 12:31 0.137840 AU
20620586 km
10.76 km/s
2042-Mar-16 15:32 0.033762 AU
5050658 km
6.05 km/s
2047-Mar-16 05:01 0.109880 AU
16437869 km
10.75 km/s
2052-Mar-20 12:01 0.230768 AU
34522361 km
15.71 km/s
2053-May-10 04:47 0.312653 AU
46772218 km
17.47 km/s
2058-May-14 19:44 0.163870 AU
24514676 km
12.70 km/s
2063-May-15 05:35 0.098029 AU
14664977 km
7.95 km/s
2073-Mar-22 17:12 0.019016 AU
2844728 km
4.93 km/s
2078-Mar-15 18:09 0.114440 AU
17119928 km
10.40 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
27.5

Orbit Quality

RMS
0.58025
Condition
6
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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