SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 MW

2023 MW

2023 MW belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.739 AU it takes 2.29 yr to circle the Sun.

Apollo Observations: 65
Orbital Period · P
2.29 yr
v(q)
53.8 km/s
v(Q)
9.5 km/s
Diameter · ≈
0.15 km
TJ
3.8
Eccentricity · e
0.7006

Orbit and dynamics

The path is an ellipse reaching 0.521 AU from the Sun at perihelion and 2.957 AU at aphelion, a radial span of 2.436 AU.

Applying Kepler's third law to a = 1.739 AU gives an orbital period of 2.29 yr, or about 838 days.

The high eccentricity (0.701) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 10.3° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 53.8 km/s at perihelion and falls to 9.5 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 = 21.92 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.15 km.

Observation record and orbit quality

The current orbit solution is based on 65 observations and has a weighted RMS residual of 0.4596 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
1.739 AU
Eccentricity
0.7006
Perihelion
0.521 AU
Aphelion
2.957343 AU
Inclination
10.3°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
74.17°

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
2049-Jan-14 08:04 0.189764 AU
28388344 km
17.09 km/s
2062-Jul-16 00:47 0.161916 AU
24222293 km
19.03 km/s
2065-Jan-31 21:49 0.178053 AU
26636389 km
27.44 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
21.92

Orbit Quality

RMS
0.45957
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.

Keep exploring

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