SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 BU4

2022 BU4

2022 BU4 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.774 AU and a period of 0.68 yr.

Aten Observations: 82
Orbital Period · P
0.68 yr
v(q)
49.4 km/s
v(Q)
23.2 km/s
Diameter · ≈
0.01 km
TJ
7.45
Eccentricity · e
0.3605

Orbit and dynamics

Between its closest point (0.495 AU) and its farthest (1.053 AU), the heliocentric distance changes by 0.558 AU over every revolution.

One full revolution takes 0.68 yr (249 days), computed from the semi-major axis of 0.774 AU.

An eccentricity of 0.36 makes the orbit moderately elongated.

Its inclination of 1.43° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 49.4 km/s at perihelion and falls to 23.2 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 = 27.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 82 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5802 arcseconds.

Condition code U = 6 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
0.7737 AU
Eccentricity
0.3605
Perihelion
0.495 AU
Aphelion
1.052619 AU
Inclination
1.43°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
272.05°

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-Oct-08 17:04 0.470048 AU
70318190 km
16.62 km/s
2033-Mar-20 17:31 0.340644 AU
50959661 km
20.01 km/s
2034-Nov-08 02:29 0.393277 AU
58833353 km
10.99 km/s
2035-Mar-27 19:25 0.101337 AU
15159851 km
11.91 km/s
2037-Mar-03 14:13 0.058975 AU
8822579 km
6.91 km/s
2039-Jan-26 06:36 0.051030 AU
7633922 km
10.21 km/s
2039-Jun-06 01:10 0.370929 AU
55490177 km
8.46 km/s
2041-Jan-31 02:28 0.298755 AU
44693102 km
18.47 km/s
2041-Jul-08 23:21 0.462156 AU
69137600 km
15.06 km/s
2049-Oct-17 14:24 0.454252 AU
67955138 km
15.25 km/s
2050-Mar-23 18:48 0.274886 AU
41122430 km
17.55 km/s
2051-Nov-19 19:46 0.361970 AU
54149892 km
8.52 km/s
2052-Mar-26 20:41 0.043193 AU
6461600 km
9.68 km/s
2054-Feb-16 02:47 0.054838 AU
8203581 km
6.93 km/s
2056-Jan-26 23:32 0.109971 AU
16451478 km
12.11 km/s
2056-Jun-14 13:41 0.398918 AU
59677327 km
10.37 km/s
2058-Feb-02 10:26 0.341817 AU
51135048 km
19.94 km/s
2058-Jul-14 03:54 0.471619 AU
70553145 km
15.85 km/s
2069-Mar-17 08:00 0.310256 AU
46413587 km
23.06 km/s
2071-Mar-23 05:58 0.143004 AU
21393110 km
18.14 km/s
2073-Mar-26 19:46 0.020287 AU
3034891 km
13.25 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
27.2

Orbit Quality

RMS
0.58018
Condition
6
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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