SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 BD15

2016 BD15

2016 BD15 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.467 AU it takes 1.78 yr to circle the Sun.

Apollo Observations: 69
Orbital Period · P
1.78 yr
v(q)
33.9 km/s
v(Q)
17.8 km/s
Diameter · ≈
0.2 km
TJ
4.37
Eccentricity · e
0.3112

Orbit and dynamics

The path is an ellipse reaching 1.01 AU from the Sun at perihelion and 1.924 AU at aphelion, a radial span of 0.914 AU.

Applying Kepler's third law to a = 1.467 AU gives an orbital period of 1.78 yr, or about 649 days.

An eccentricity of 0.311 makes the orbit moderately elongated.

A steep inclination of 35.54° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 33.9 km/s at perihelion and falls to 17.8 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 21.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.2 km.

Observation record and orbit quality

The current orbit solution is based on 69 observations and has a weighted RMS residual of 0.6222 arcseconds.

Condition code U = 2 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
1.467 AU
Eccentricity
0.3112
Perihelion
1.01 AU
Aphelion
1.92353 AU
Inclination
35.54°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
281.91°

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
2032-Jan-31 15:31 0.189301 AU
28318976 km
19.64 km/s
2048-Jan-29 00:14 0.120539 AU
18032382 km
19.57 km/s
2064-Jan-27 09:23 0.080773 AU
12083534 km
19.64 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
21.2

Orbit Quality

RMS
0.62218
Condition
2
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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