SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 MB1

2026 MB1

2026 MB1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.999 AU and a period of 1.00 yr.

Aten Observations: 70
Orbital Period · P
1.00 yr
v(q)
35.4 km/s
v(Q)
25.1 km/s
Diameter · ≈
0.02 km
TJ
6.05
Eccentricity · e
0.1703

Orbit and dynamics

Between its closest point (0.829 AU) and its farthest (1.169 AU), the heliocentric distance changes by 0.34 AU over every revolution.

One full revolution takes 1.00 yr (364 days), computed from the semi-major axis of 0.999 AU.

An eccentricity of 0.17 makes the orbit moderately elongated.

The orbital plane is tilted 14.89° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.4 km/s at perihelion and falls to 25.1 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 = 26.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 70 individual observations underpins this orbit; the fit leaves an RMS residual of 0.369 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
0.9986 AU
Eccentricity
0.1703
Perihelion
0.829 AU
Aphelion
1.168662 AU
Inclination
14.89°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
75.85°

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
2027-Jun-21 08:11 0.061051 AU
9133077 km
10.13 km/s
2028-Jun-23 06:01 0.127437 AU
19064268 km
11.60 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
26.5

Orbit Quality

RMS
0.36897
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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