SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 FH101

2017 FH101

2017 FH101 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.787 AU it takes 2.39 yr to circle the Sun.

Apollo Observations: 197
Orbital Period · P
2.39 yr
v(q)
36.6 km/s
v(Q)
13.6 km/s
Diameter · ≈
0.11 km
TJ
3.94
Eccentricity · e
0.4591

Orbit and dynamics

Between its closest point (0.966 AU) and its farthest (2.607 AU), the heliocentric distance changes by 1.641 AU over every revolution.

One full revolution takes 2.39 yr (873 days), computed from the semi-major axis of 1.787 AU.

The high eccentricity (0.459) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 9.24° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 36.6 km/s at perihelion and falls to 13.6 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 = 22.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.11 km.

Observation record and orbit quality

Astrometry from 197 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3916 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
1.787 AU
Eccentricity
0.4591
Perihelion
0.966 AU
Aphelion
2.607412 AU
Inclination
9.24°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
282.91°

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
2029-Mar-29 03:16 0.372498 AU
55724953 km
20.38 km/s
2036-Aug-08 23:10 0.391498 AU
58567280 km
19.39 km/s
2048-Jul-01 13:44 0.160635 AU
24030618 km
8.55 km/s
2060-Apr-14 11:08 0.090213 AU
13495680 km
12.61 km/s
2079-Jul-29 16:49 0.239867 AU
35883657 km
14.04 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
22.5

Orbit Quality

RMS
0.39164
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.