SpaceAtlas Space Object Data
NASA JPL SBDB · 601696

601696

601696 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.485 AU it takes 1.81 yr to circle the Sun.

Apollo Observations: 177
Orbital Period · P
1.81 yr
v(q)
56.9 km/s
v(Q)
10.5 km/s
Diameter · ≈
0.63 km
TJ
4.21
Eccentricity · e
0.6887

Orbit and dynamics

The path is an ellipse reaching 0.462 AU from the Sun at perihelion and 2.508 AU at aphelion, a radial span of 2.046 AU.

Applying Kepler's third law to a = 1.485 AU gives an orbital period of 1.81 yr, or about 661 days.

The high eccentricity (0.689) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 24.03° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 56.9 km/s at perihelion and falls to 10.5 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 = 18.74 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.63 km.

Observation record and orbit quality

The current orbit solution is based on 177 observations and has a weighted RMS residual of 0.514 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
1.485 AU
Eccentricity
0.6887
Perihelion
0.462 AU
Aphelion
2.507719 AU
Inclination
24.03°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
118.17°

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
2033-Jan-10 11:35 0.447207 AU
66901183 km
25.31 km/s
2040-Jun-26 05:57 0.337635 AU
50509504 km
19.06 km/s
2049-Jul-06 06:39 0.314678 AU
47075221 km
26.67 km/s
2052-Nov-16 05:00 0.430618 AU
64419513 km
28.37 km/s
2058-Jul-18 17:41 0.488078 AU
73015383 km
34.82 km/s
2061-Dec-10 01:41 0.390306 AU
58388997 km
22.41 km/s
2071-Jan-11 07:09 0.446570 AU
66805930 km
25.25 km/s
2078-Jun-27 00:32 0.335382 AU
50172446 km
19.05 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
18.74

Orbit Quality

RMS
0.51402
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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