SpaceAtlas Space Object Data
NASA JPL SBDB · 2002 BG25

2002 BG25

2002 BG25 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.232 AU it takes 1.37 yr to circle the Sun.

Apollo Observations: 118
Orbital Period · P
1.37 yr
v(q)
34.1 km/s
v(Q)
21.1 km/s
Diameter · ≈
0.23 km
TJ
4.85
Eccentricity · e
0.2342

Orbit and dynamics

The path is an ellipse reaching 0.943 AU from the Sun at perihelion and 1.521 AU at aphelion, a radial span of 0.578 AU.

Applying Kepler's third law to a = 1.232 AU gives an orbital period of 1.37 yr, or about 499 days.

An eccentricity of 0.234 makes the orbit moderately elongated.

A steep inclination of 48.82° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 34.1 km/s at perihelion and falls to 21.1 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 = 20.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.23 km.

Observation record and orbit quality

The current orbit solution is based on 118 observations and has a weighted RMS residual of 0.5657 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
1.232 AU
Eccentricity
0.2342
Perihelion
0.943 AU
Aphelion
1.520534 AU
Inclination
48.82°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
249.59°

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
2028-Feb-03 03:53 0.128858 AU
19276950 km
26.98 km/s
2028-Aug-04 06:24 0.332794 AU
49785222 km
22.78 km/s
2032-Feb-19 13:06 0.479303 AU
71702753 km
25.90 km/s
2032-Aug-07 10:23 0.436217 AU
65257141 km
26.91 km/s
2039-Jan-21 10:53 0.482287 AU
72149133 km
32.33 km/s
2043-Feb-10 01:26 0.125892 AU
18833164 km
25.34 km/s
2043-Aug-05 04:02 0.291513 AU
43609713 km
23.69 km/s
2054-Jan-29 16:45 0.246406 AU
36861829 km
28.47 km/s
2054-Aug-05 07:58 0.388529 AU
58123123 km
22.60 km/s
2058-Feb-16 10:23 0.362171 AU
54180068 km
25.33 km/s
2058-Aug-06 14:20 0.366565 AU
54837313 km
25.56 km/s
2069-Feb-06 08:37 0.051723 AU
7737702 km
25.94 km/s
2069-Aug-04 13:13 0.298871 AU
44710473 km
23.14 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
20.9

Orbit Quality

RMS
0.56573
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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