SpaceAtlas Space Object Data
NASA JPL SBDB · 412995

412995

412995 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.219 AU once every 1.35 yr.

Amor Observations: 346
Orbital Period · P
1.35 yr
v(q)
29.5 km/s
v(Q)
24.6 km/s
Diameter · ≈
0.35 km
TJ
5.19
Eccentricity · e
0.0906

Orbit and dynamics

The path is an ellipse reaching 1.109 AU from the Sun at perihelion and 1.329 AU at aphelion, a radial span of 0.22 AU.

Applying Kepler's third law to a = 1.219 AU gives an orbital period of 1.35 yr, or about 492 days.

With e = 0.091, the orbit is close to circular.

The orbital plane is tilted 16.31° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 29.5 km/s at perihelion and falls to 24.6 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 = 20.06 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.35 km.

Observation record and orbit quality

The current orbit solution is based on 346 observations and has a weighted RMS residual of 0.4908 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
1.219 AU
Eccentricity
0.0906
Perihelion
1.109 AU
Aphelion
1.329441 AU
Inclination
16.31°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
242.22°

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
2053-Dec-13 23:11 0.157503 AU
23562114 km
8.61 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
20.06

Orbit Quality

RMS
0.4908
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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