SpaceAtlas Space Object Data
NASA JPL SBDB · 153415

153415

153415 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.891 AU and a period of 0.84 yr.

Aten Observations: 670
Orbital Period · P
0.84 yr
v(q)
39.2 km/s
v(Q)
25.4 km/s
Diameter · ≈
1.41 km
TJ
6.36
Eccentricity · e
0.2139

Orbit and dynamics

Between its closest point (0.701 AU) and its farthest (1.082 AU), the heliocentric distance changes by 0.381 AU over every revolution.

One full revolution takes 0.84 yr (307 days), computed from the semi-major axis of 0.891 AU.

An eccentricity of 0.214 makes the orbit moderately elongated.

A steep inclination of 50.21° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 39.2 km/s at perihelion and falls to 25.4 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 = 17.01 and an assumed geometric albedo of 0.14, the diameter works out to roughly 1.41 km.

Observation record and orbit quality

Astrometry from 670 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3525 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
0.8915 AU
Eccentricity
0.2139
Perihelion
0.701 AU
Aphelion
1.082192 AU
Inclination
50.21°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
273.24°

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
2033-Aug-07 07:25 0.128057 AU
19156987 km
24.97 km/s
2038-Aug-18 18:16 0.185798 AU
27794937 km
27.56 km/s
2049-Aug-05 08:33 0.173869 AU
26010359 km
24.80 km/s
2054-Aug-16 13:46 0.137686 AU
20597463 km
26.85 km/s
2070-Aug-14 09:56 0.096213 AU
14393215 km
26.24 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
17.01

Orbit Quality

RMS
0.35249
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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