SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 FC35

2015 FC35

2015 FC35 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.392 AU it takes 1.64 yr to circle the Sun.

Apollo Observations: 256
Orbital Period · P
1.64 yr
v(q)
38.3 km/s
v(Q)
16.6 km/s
Diameter · ≈
0.13 km
TJ
4.65
Eccentricity · e
0.3947

Orbit and dynamics

The path is an ellipse reaching 0.843 AU from the Sun at perihelion and 1.941 AU at aphelion, a radial span of 1.098 AU.

Applying Kepler's third law to a = 1.392 AU gives an orbital period of 1.64 yr, or about 600 days.

An eccentricity of 0.395 makes the orbit moderately elongated.

The orbital plane is tilted 15.45° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.3 km/s at perihelion and falls to 16.6 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 = 22.15 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.13 km.

Observation record and orbit quality

The current orbit solution is based on 256 observations and has a weighted RMS residual of 0.5154 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
1.392 AU
Eccentricity
0.3947
Perihelion
0.843 AU
Aphelion
1.941422 AU
Inclination
15.45°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
243.7°

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-Sep-11 02:48 0.268757 AU
40205490 km
18.37 km/s
2038-Jul-05 18:53 0.298022 AU
44583517 km
8.64 km/s
2038-Sep-05 03:18 0.292706 AU
43788176 km
8.83 km/s
2043-Apr-03 22:04 0.044841 AU
6708079 km
14.40 km/s
2056-Sep-05 11:04 0.173359 AU
25934084 km
14.21 km/s
2061-Apr-28 13:10 0.208882 AU
31248341 km
9.69 km/s
2061-Sep-22 04:12 0.449922 AU
67307425 km
9.51 km/s
2066-Mar-22 00:33 0.293535 AU
43912153 km
20.98 km/s
2074-Sep-14 17:26 0.329036 AU
49223110 km
20.40 km/s
2079-Jul-19 05:26 0.293897 AU
43966365 km
7.77 km/s
2079-Sep-04 17:47 0.279267 AU
41777780 km
8.91 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
22.15

Orbit Quality

RMS
0.51541
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.

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