SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 YT56

2007 YT56

2007 YT56 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.294 AU it takes 1.47 yr to circle the Sun.

Apollo Observations: 27
Orbital Period · P
1.47 yr
v(q)
35.2 km/s
v(Q)
19.5 km/s
Diameter · ≈
0.07 km
TJ
4.97
Eccentricity · e
0.2874

Orbit and dynamics

Between its closest point (0.922 AU) and its farthest (1.666 AU), the heliocentric distance changes by 0.744 AU over every revolution.

One full revolution takes 1.47 yr (538 days), computed from the semi-major axis of 1.294 AU.

An eccentricity of 0.287 makes the orbit moderately elongated.

The orbital plane is tilted 6° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.2 km/s at perihelion and falls to 19.5 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 = 23.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

Astrometry from 27 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6522 arcseconds.

Condition code U = 6 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
1.294 AU
Eccentricity
0.2874
Perihelion
0.922 AU
Aphelion
1.665896 AU
Inclination
6.0°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
236.53°

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
2030-Jan-01 09:27 0.359339 AU
53756418 km
19.80 km/s
2032-Dec-14 07:11 0.077925 AU
11657425 km
9.26 km/s
2038-Aug-01 01:02 0.181726 AU
27185886 km
15.25 km/s
2039-Feb-11 15:02 0.429442 AU
64243635 km
7.81 km/s
2057-Dec-29 06:44 0.204608 AU
30608870 km
17.75 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
23.4

Orbit Quality

RMS
0.65223
Condition
6
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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