SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 FE33

2015 FE33

2015 FE33 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.45 AU it takes 1.75 yr to circle the Sun.

Apollo Observations: 69
Orbital Period · P
1.75 yr
v(q)
53.9 km/s
v(Q)
11.3 km/s
Diameter · ≈
0.39 km
TJ
4.35
Eccentricity · e
0.6522

Orbit and dynamics

Between its closest point (0.504 AU) and its farthest (2.396 AU), the heliocentric distance changes by 1.892 AU over every revolution.

One full revolution takes 1.75 yr (638 days), computed from the semi-major axis of 1.45 AU.

The high eccentricity (0.652) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 17.97° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 53.9 km/s at perihelion and falls to 11.3 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 = 19.78 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.39 km.

Observation record and orbit quality

Astrometry from 69 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4369 arcseconds.

Condition code U = 1 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
1.45 AU
Eccentricity
0.6522
Perihelion
0.504 AU
Aphelion
2.39569 AU
Inclination
17.97°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
88.16°

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-Nov-19 13:07 0.310352 AU
46428056 km
19.37 km/s
2029-May-30 14:42 0.420011 AU
62832716 km
15.94 km/s
2034-Nov-11 23:02 0.336373 AU
50320758 km
17.16 km/s
2036-May-10 18:08 0.375233 AU
56134050 km
14.57 km/s
2041-Oct-30 23:48 0.372041 AU
55656482 km
16.41 km/s
2043-May-03 00:27 0.332436 AU
49731763 km
16.78 km/s
2048-Oct-17 08:14 0.406080 AU
60748667 km
18.04 km/s
2050-Apr-27 20:04 0.303928 AU
45467044 km
19.11 km/s
2055-Oct-07 11:48 0.432320 AU
64674176 km
20.11 km/s
2057-Apr-23 13:41 0.293981 AU
43978954 km
21.43 km/s
2062-Sep-27 23:02 0.453610 AU
67859107 km
22.04 km/s
2064-Apr-19 12:10 0.304444 AU
45544204 km
23.75 km/s
2069-Sep-19 00:49 0.470133 AU
70330927 km
23.71 km/s
2071-Apr-16 06:28 0.335917 AU
50252504 km
26.28 km/s
2076-Sep-10 05:28 0.483658 AU
72354206 km
25.16 km/s
2078-Apr-11 23:59 0.384310 AU
57491942 km
28.88 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
19.78

Orbit Quality

RMS
0.43694
Condition
1
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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