SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 BW30

2017 BW30

2017 BW30 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.077 AU it takes 1.12 yr to circle the Sun.

Apollo Observations: 55
Orbital Period · P
1.12 yr
v(q)
35.6 km/s
v(Q)
23.1 km/s
Diameter · ≈
0.06 km
TJ
5.65
Eccentricity · e
0.2117

Orbit and dynamics

Between its closest point (0.849 AU) and its farthest (1.305 AU), the heliocentric distance changes by 0.456 AU over every revolution.

One full revolution takes 1.12 yr (408 days), computed from the semi-major axis of 1.077 AU.

An eccentricity of 0.212 makes the orbit moderately elongated.

A steep inclination of 23.81° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 35.6 km/s at perihelion and falls to 23.1 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

Astrometry from 55 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5077 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
1.077 AU
Eccentricity
0.2117
Perihelion
0.849 AU
Aphelion
1.305001 AU
Inclination
23.81°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
204.89°

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-Feb-05 13:40 0.290407 AU
43444268 km
19.26 km/s
2034-Jul-25 06:37 0.229169 AU
34283213 km
17.89 km/s
2035-Aug-11 08:03 0.464525 AU
69491953 km
13.94 km/s
2036-Jan-28 23:44 0.066825 AU
9996899 km
13.08 km/s
2044-Aug-08 15:16 0.098131 AU
14680235 km
12.47 km/s
2045-Feb-10 20:34 0.383799 AU
57415471 km
12.44 km/s
2046-Feb-05 18:44 0.293998 AU
43981453 km
19.57 km/s
2053-Jul-25 12:01 0.213000 AU
31864342 km
17.67 km/s
2054-Aug-09 21:33 0.468745 AU
70123216 km
13.99 km/s
2055-Jan-28 20:32 0.059035 AU
8831540 km
13.19 km/s
2063-Aug-09 15:42 0.101258 AU
15147953 km
12.44 km/s
2064-Feb-11 01:15 0.376189 AU
56277005 km
12.44 km/s
2065-Feb-05 18:08 0.297024 AU
44434140 km
19.71 km/s
2072-Jul-25 07:11 0.212353 AU
31767578 km
17.66 km/s
2073-Aug-09 18:39 0.468627 AU
70105673 km
14.00 km/s
2074-Jan-28 15:43 0.058984 AU
8823822 km
13.19 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
0.50768
Condition
5
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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