SpaceAtlas Space Object Data
NASA JPL SBDB · 741640

741640

741640 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.139 AU it takes 1.22 yr to circle the Sun.

Apollo Observations: 491
Orbital Period · P
1.22 yr
v(q)
48.5 km/s
v(Q)
16 km/s
Diameter · ≈
0.42 km
TJ
5.29
Eccentricity · e
0.5035

Orbit and dynamics

Between its closest point (0.566 AU) and its farthest (1.712 AU), the heliocentric distance changes by 1.146 AU over every revolution.

One full revolution takes 1.22 yr (444 days), computed from the semi-major axis of 1.139 AU.

The high eccentricity (0.503) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 27.24° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 48.5 km/s at perihelion and falls to 16 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 = 19.66 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.42 km.

Observation record and orbit quality

Astrometry from 491 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4393 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
1.139 AU
Eccentricity
0.5035
Perihelion
0.566 AU
Aphelion
1.712486 AU
Inclination
27.24°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
35.86°

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
19.66

Orbit Quality

RMS
0.43929
Condition
0
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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