SpaceAtlas Space Object Data
NASA JPL SBDB · 2004 OW10

2004 OW10

2004 OW10 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.225 AU it takes 1.36 yr to circle the Sun.

Apollo Observations: 51
Orbital Period · P
1.36 yr
v(q)
34.7 km/s
v(Q)
20.9 km/s
Diameter · ≈
0.04 km
TJ
5.19
Eccentricity · e
0.2497

Orbit and dynamics

The path is an ellipse reaching 0.919 AU from the Sun at perihelion and 1.531 AU at aphelion, a radial span of 0.612 AU.

Applying Kepler's third law to a = 1.225 AU gives an orbital period of 1.36 yr, or about 495 days.

An eccentricity of 0.25 makes the orbit moderately elongated.

Its inclination of 1.5° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.7 km/s at perihelion and falls to 20.9 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 = 24.61 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 51 observations and has a weighted RMS residual of 0.6967 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
1.225 AU
Eccentricity
0.2497
Perihelion
0.919 AU
Aphelion
1.530883 AU
Inclination
1.5°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
99.9°

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-Jan-15 14:42 0.385700 AU
57699917 km
6.66 km/s
2027-Jul-25 21:57 0.112443 AU
16821167 km
9.72 km/s
2038-Feb-21 03:04 0.476552 AU
71291150 km
20.64 km/s
2038-Oct-18 06:40 0.497997 AU
74499219 km
8.44 km/s
2042-Mar-16 19:19 0.051573 AU
7715256 km
7.74 km/s
2042-Sep-10 21:07 0.355164 AU
53131847 km
5.70 km/s
2046-Jan-30 19:09 0.321266 AU
48060692 km
5.27 km/s
2046-Jul-12 18:03 0.014516 AU
2171620 km
6.06 km/s
2050-Jan-02 12:13 0.430465 AU
64396619 km
7.56 km/s
2050-Aug-02 01:31 0.231391 AU
34615598 km
13.21 km/s
2053-Dec-13 20:17 0.496676 AU
74301704 km
8.69 km/s
2054-Aug-14 20:39 0.486339 AU
72755233 km
20.67 km/s
2069-Mar-01 14:43 0.273294 AU
40884156 km
14.55 km/s
2069-Oct-03 15:32 0.443483 AU
66344161 km
7.51 km/s
2073-Mar-18 14:49 0.029600 AU
4428082 km
6.85 km/s
2073-Sep-08 11:38 0.340799 AU
50982853 km
5.45 km/s
2077-May-18 02:42 0.096149 AU
14383735 km
5.32 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
24.61

Orbit Quality

RMS
0.6967
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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