SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 RH15

2017 RH15

2017 RH15 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.39 AU once every 1.64 yr.

Amor Observations: 101
Orbital Period · P
1.64 yr
v(q)
33.2 km/s
v(Q)
19.2 km/s
Diameter · ≈
0.1 km
TJ
4.74
Eccentricity · e
0.2654

Orbit and dynamics

The path is an ellipse reaching 1.021 AU from the Sun at perihelion and 1.759 AU at aphelion, a radial span of 0.738 AU.

Applying Kepler's third law to a = 1.39 AU gives an orbital period of 1.64 yr, or about 599 days.

An eccentricity of 0.265 makes the orbit moderately elongated.

Its inclination of 2.17° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 33.2 km/s at perihelion and falls to 19.2 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 22.74 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

The current orbit solution is based on 101 observations and has a weighted RMS residual of 0.5942 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
1.39 AU
Eccentricity
0.2654
Perihelion
1.021 AU
Aphelion
1.758906 AU
Inclination
2.17°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
68.72°

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
2035-Sep-20 05:29 0.305261 AU
45666388 km
2.31 km/s
2036-Jan-04 16:51 0.262762 AU
39308678 km
10.77 km/s
2040-Oct-20 16:54 0.243553 AU
36434972 km
10.06 km/s
2041-Jan-31 01:39 0.289721 AU
43341658 km
2.21 km/s
2053-Aug-26 09:31 0.409779 AU
61302039 km
4.93 km/s
2054-Jan-14 05:26 0.439012 AU
65675202 km
16.09 km/s
2058-Nov-07 11:31 0.088871 AU
13294942 km
4.82 km/s
2071-Aug-23 08:16 0.427410 AU
63939620 km
5.32 km/s
2072-Jan-16 20:29 0.475231 AU
71093522 km
17.15 km/s
2076-Nov-04 19:12 0.100519 AU
15037364 km
5.26 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
22.74

Orbit Quality

RMS
0.5942
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.