SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 SR12

2017 SR12

2017 SR12 is a small body of the Solar System moving on a 2.595 AU orbit, with an orbital period of 4.18 yr.

asteroid Observations: 27
Orbital Period · P
4.18 yr
v(q)
32 km/s
v(Q)
10.7 km/s
Diameter · ≈
0.22 km
TJ
3.21
Eccentricity · e
0.4991

Orbit and dynamics

The path is an ellipse reaching 1.3 AU from the Sun at perihelion and 3.89 AU at aphelion, a radial span of 2.59 AU.

Applying Kepler's third law to a = 2.595 AU gives an orbital period of 4.18 yr, or about 1,527 days.

The high eccentricity (0.499) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 10.62° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32 km/s at perihelion and falls to 10.7 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 21.06 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.22 km.

Observation record and orbit quality

The current orbit solution is based on 27 observations and has a weighted RMS residual of 0.6894 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
2.595 AU
Eccentricity
0.4991
Perihelion
1.3 AU
Aphelion
3.890165 AU
Inclination
10.62°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
20.09°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
21.06

Orbit Quality

RMS
0.68943
Condition
5
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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