SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 BQ

2015 BQ

2015 BQ belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.029 AU it takes 1.04 yr to circle the Sun.

Apollo Observations: 53
Orbital Period · P
1.04 yr
v(q)
35.2 km/s
v(Q)
24.5 km/s
Diameter · ≈
0.06 km
TJ
5.88
Eccentricity · e
0.1803

Orbit and dynamics

The path is an ellipse reaching 0.844 AU from the Sun at perihelion and 1.215 AU at aphelion, a radial span of 0.371 AU.

Applying Kepler's third law to a = 1.029 AU gives an orbital period of 1.04 yr, or about 381 days.

An eccentricity of 0.18 makes the orbit moderately elongated.

The orbital plane is tilted 19.03° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.2 km/s at perihelion and falls to 24.5 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 = 23.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

The current orbit solution is based on 53 observations and has a weighted RMS residual of 0.4843 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.029 AU
Eccentricity
0.1803
Perihelion
0.844 AU
Aphelion
1.214529 AU
Inclination
19.03°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
234.26°

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
2037-Jan-19 02:27 0.335482 AU
50187460 km
21.60 km/s
2038-Jan-26 12:00 0.108873 AU
16287181 km
14.72 km/s
2039-Jan-26 01:38 0.085212 AU
12747474 km
10.40 km/s
2042-Aug-19 21:19 0.151171 AU
22614798 km
17.03 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
23.8

Orbit Quality

RMS
0.48434
Condition
7
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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