SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 HV3

2017 HV3

2017 HV3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.186 AU it takes 1.29 yr to circle the Sun.

Apollo Observations: 111
Orbital Period · P
1.29 yr
v(q)
31.7 km/s
v(Q)
23.6 km/s
Diameter · ≈
0.06 km
TJ
5.32
Eccentricity · e
0.1474

Orbit and dynamics

Between its closest point (1.011 AU) and its farthest (1.361 AU), the heliocentric distance changes by 0.35 AU over every revolution.

One full revolution takes 1.29 yr (472 days), computed from the semi-major axis of 1.186 AU.

An eccentricity of 0.147 makes the orbit moderately elongated.

The orbital plane is tilted 7.49° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.7 km/s at perihelion and falls to 23.6 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 23.75 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 111 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4058 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
1.186 AU
Eccentricity
0.1474
Perihelion
1.011 AU
Aphelion
1.360816 AU
Inclination
7.49°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
334.39°

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
2048-May-04 01:00 0.139372 AU
20849785 km
3.37 km/s
2048-Aug-16 08:12 0.077063 AU
11528457 km
4.29 km/s
2057-Aug-23 22:15 0.179711 AU
26884411 km
9.03 km/s
2079-May-12 16:32 0.136841 AU
20471192 km
4.33 km/s
2079-Aug-18 03:30 0.129001 AU
19298323 km
3.87 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
23.75

Orbit Quality

RMS
0.40579
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.