SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 BS5

2017 BS5

2017 BS5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.017 AU it takes 1.03 yr to circle the Sun.

Apollo Observations: 248
Orbital Period · P
1.03 yr
v(q)
29.8 km/s
v(Q)
29.3 km/s
Diameter · ≈
0.05 km
TJ
5.98
Eccentricity · e
0.0077

Orbit and dynamics

Between its closest point (1.009 AU) and its farthest (1.025 AU), the heliocentric distance changes by 0.016 AU over every revolution.

One full revolution takes 1.03 yr (375 days), computed from the semi-major axis of 1.017 AU.

With e = 0.008, the orbit is close to circular.

The orbital plane is tilted 11.23° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 29.8 km/s at perihelion and falls to 29.3 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 24.24 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 248 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3682 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
1.017 AU
Eccentricity
0.0077
Perihelion
1.009 AU
Aphelion
1.024831 AU
Inclination
11.23°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
40.88°

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
2055-Feb-03 08:51 0.402401 AU
60198364 km
13.13 km/s
2055-Jul-18 04:39 0.351983 AU
52655973 km
11.52 km/s
2056-Jan-29 05:06 0.249697 AU
37354136 km
9.43 km/s
2056-Jul-19 19:37 0.200127 AU
29938566 km
8.00 km/s
2057-Jan-23 23:47 0.100688 AU
15062721 km
6.63 km/s
2057-Jul-22 10:14 0.054210 AU
8109743 km
5.90 km/s
2058-Jan-20 05:00 0.046171 AU
6907122 km
5.98 km/s
2058-Jul-24 19:16 0.083289 AU
12459923 km
6.31 km/s
2059-Jan-14 23:52 0.189669 AU
28374062 km
7.85 km/s
2059-Jul-27 07:26 0.234869 AU
35135963 km
9.05 km/s
2060-Jan-05 19:34 0.342356 AU
51215750 km
11.11 km/s
2060-Jul-28 17:28 0.389449 AU
58260717 km
12.85 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
24.24

Orbit Quality

RMS
0.36821
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.