SpaceAtlas Space Object Data
NASA JPL SBDB · 2013 BC70

2013 BC70

2013 BC70 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.308 AU it takes 1.50 yr to circle the Sun.

Apollo Observations: 51
Orbital Period · P
1.50 yr
v(q)
40.8 km/s
v(Q)
16.6 km/s
Diameter · ≈
0.05 km
TJ
4.87
Eccentricity · e
0.4208

Orbit and dynamics

Between its closest point (0.758 AU) and its farthest (1.858 AU), the heliocentric distance changes by 1.1 AU over every revolution.

One full revolution takes 1.50 yr (546 days), computed from the semi-major axis of 1.308 AU.

The high eccentricity (0.421) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 12.15° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 40.8 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 = 24.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 51 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5427 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
1.308 AU
Eccentricity
0.4208
Perihelion
0.758 AU
Aphelion
1.858406 AU
Inclination
12.15°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
23.71°

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-Dec-27 06:11 0.216721 AU
32421013 km
8.17 km/s
2030-Dec-02 23:36 0.252357 AU
37752111 km
8.50 km/s
2033-Nov-16 17:11 0.277265 AU
41478255 km
9.64 km/s
2036-Nov-04 02:53 0.292447 AU
43749397 km
10.42 km/s
2037-Jan-13 21:37 0.355811 AU
53228556 km
7.69 km/s
2039-Jul-06 00:52 0.491362 AU
73506654 km
7.89 km/s
2039-Oct-24 13:23 0.299460 AU
44798609 km
10.85 km/s
2040-Jan-22 04:36 0.401876 AU
60119728 km
8.30 km/s
2042-Jul-14 20:53 0.451012 AU
67470492 km
7.18 km/s
2042-Oct-14 01:53 0.298892 AU
44713673 km
10.98 km/s
2043-Jan-27 16:22 0.441916 AU
66109651 km
8.78 km/s
2045-Oct-02 21:11 0.290862 AU
43512349 km
10.85 km/s
2046-Feb-01 13:56 0.480661 AU
71905788 km
9.27 km/s
2048-Sep-21 10:43 0.275304 AU
41184906 km
10.46 km/s
2051-Sep-09 15:56 0.251054 AU
37557127 km
9.85 km/s
2054-Aug-27 21:36 0.221061 AU
33070195 km
9.32 km/s
2057-Aug-16 11:50 0.185385 AU
27733174 km
9.33 km/s
2060-Aug-09 03:45 0.148315 AU
22187606 km
9.88 km/s
2063-Aug-05 13:40 0.113435 AU
16969695 km
10.62 km/s
2066-Aug-03 01:36 0.089659 AU
13412734 km
11.18 km/s
2069-Aug-01 04:08 0.070380 AU
10528744 km
11.65 km/s
2072-Jul-31 08:18 0.062627 AU
9368903 km
11.84 km/s
2075-Aug-01 10:46 0.067519 AU
10100646 km
11.73 km/s
2078-Aug-02 10:03 0.082149 AU
12289380 km
11.37 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
24.1

Orbit Quality

RMS
0.54269
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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