SpaceAtlas Space Object Data
NASA JPL SBDB · 363814

363814

363814 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.964 AU it takes 2.75 yr to circle the Sun.

Apollo Observations: 375
Orbital Period · P
2.75 yr
v(q)
36 km/s
v(Q)
12.6 km/s
Diameter · ≈
0.9 km
TJ
3.3
Eccentricity · e
0.4829

Orbit and dynamics

The path is an ellipse reaching 1.015 AU from the Sun at perihelion and 2.912 AU at aphelion, a radial span of 1.897 AU.

Applying Kepler's third law to a = 1.964 AU gives an orbital period of 2.75 yr, or about 1,005 days.

The high eccentricity (0.483) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 52.58° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 36 km/s at perihelion and falls to 12.6 km/s at aphelion.

Size and surface

The measured diameter is 1.1 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.1 points to a comparatively bright, reflective surface.

Observation record and orbit quality

The current orbit solution is based on 375 observations and has a weighted RMS residual of 0.5629 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
1.964 AU
Eccentricity
0.4829
Perihelion
1.015 AU
Aphelion
2.912416 AU
Inclination
52.58°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
193.84°

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-Jul-19 14:29 0.226197 AU
33838557 km
27.18 km/s
2038-Jul-20 15:15 0.257004 AU
38447322 km
26.84 km/s
2049-Jul-21 19:11 0.300111 AU
44895968 km
26.48 km/s
2060-Jul-23 02:48 0.356329 AU
53306134 km
26.15 km/s
2071-Jul-25 07:20 0.414632 AU
62028078 km
25.92 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
1.105 km
Albedo
0.1
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
17.97

Orbit Quality

RMS
0.56294
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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