SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 CT58

2015 CT58

2015 CT58 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.904 AU once every 2.63 yr.

Amor Observations: 97
Orbital Period · P
2.63 yr
v(q)
31.5 km/s
v(Q)
14.8 km/s
Diameter · ≈
0.23 km
TJ
3.71
Eccentricity · e
0.3618

Orbit and dynamics

The path is an ellipse reaching 1.215 AU from the Sun at perihelion and 2.593 AU at aphelion, a radial span of 1.378 AU.

Applying Kepler's third law to a = 1.904 AU gives an orbital period of 2.63 yr, or about 960 days.

An eccentricity of 0.362 makes the orbit moderately elongated.

A steep inclination of 30.45° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 31.5 km/s at perihelion and falls to 14.8 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 = 20.98 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.23 km.

Observation record and orbit quality

The current orbit solution is based on 97 observations and has a weighted RMS residual of 0.4911 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
1.904 AU
Eccentricity
0.3618
Perihelion
1.215 AU
Aphelion
2.592867 AU
Inclination
30.45°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
106.24°

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
2036-Mar-24 21:31 0.246202 AU
36831233 km
16.31 km/s
2057-Mar-26 07:05 0.298942 AU
44721097 km
17.12 km/s
2078-Mar-28 03:40 0.414010 AU
61935079 km
18.54 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
20.98

Orbit Quality

RMS
0.49106
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.

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