SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 MS1

2026 MS1

2026 MS1 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.248 AU once every 1.39 yr.

Amor Observations: 24
Orbital Period · P
1.39 yr
v(q)
29.6 km/s
v(Q)
24 km/s
Diameter · ≈
0.06 km
TJ
5.1
Eccentricity · e
0.1059

Orbit and dynamics

Between its closest point (1.116 AU) and its farthest (1.38 AU), the heliocentric distance changes by 0.264 AU over every revolution.

One full revolution takes 1.39 yr (509 days), computed from the semi-major axis of 1.248 AU.

An eccentricity of 0.106 makes the orbit moderately elongated.

The orbital plane is tilted 17.52° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 29.6 km/s at perihelion and falls to 24 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 = 24.03 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 24 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4067 arcseconds.

Condition code U = 8 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.248 AU
Eccentricity
0.1059
Perihelion
1.116 AU
Aphelion
1.380163 AU
Inclination
17.52°
Orbital Period
— yr
Epoch
2461211.5
Mean Anomaly
350.29°

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-Jun-26 12:28 0.102660 AU
15357688 km
9.31 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
24.03

Orbit Quality

RMS
0.40666
Condition
8
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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