SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 RX8

2007 RX8

2007 RX8 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.137 AU it takes 1.21 yr to circle the Sun.

Apollo Observations: 59
Orbital Period · P
1.21 yr
v(q)
34.6 km/s
v(Q)
22.6 km/s
Diameter · ≈
0.04 km
TJ
5.48
Eccentricity · e
0.2108

Orbit and dynamics

The path is an ellipse reaching 0.897 AU from the Sun at perihelion and 1.377 AU at aphelion, a radial span of 0.48 AU.

Applying Kepler's third law to a = 1.137 AU gives an orbital period of 1.21 yr, or about 443 days.

An eccentricity of 0.211 makes the orbit moderately elongated.

The orbital plane is tilted 9.4° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.6 km/s at perihelion and falls to 22.6 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 = 24.73 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 59 observations and has a weighted RMS residual of 0.8537 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
1.137 AU
Eccentricity
0.2108
Perihelion
0.897 AU
Aphelion
1.37668 AU
Inclination
9.4°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
214.26°

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
2030-Jan-01 20:23 0.429368 AU
64232563 km
7.84 km/s
2030-Sep-22 05:09 0.352587 AU
52746213 km
17.29 km/s
2035-Mar-29 22:31 0.151866 AU
22718764 km
11.09 km/s
2035-Nov-22 11:54 0.404585 AU
60525124 km
7.09 km/s
2041-Mar-06 15:18 0.240437 AU
35968879 km
6.13 km/s
2041-Jul-15 14:06 0.181355 AU
27130336 km
5.59 km/s
2047-Jan-19 06:43 0.401123 AU
60007116 km
7.68 km/s
2047-Sep-14 22:51 0.182735 AU
27336797 km
12.55 km/s
2052-Mar-23 07:12 0.311690 AU
46628102 km
15.86 km/s
2052-Dec-10 10:56 0.431209 AU
64507982 km
7.59 km/s
2058-Mar-31 05:15 0.116206 AU
17384213 km
6.17 km/s
2058-Oct-23 15:17 0.327142 AU
48939687 km
5.96 km/s
2064-Feb-05 11:11 0.354256 AU
52995961 km
7.26 km/s
2064-Sep-06 17:21 0.033843 AU
5062915 km
8.56 km/s
2069-Mar-20 08:58 0.406243 AU
60773137 km
18.63 km/s
2069-Dec-19 21:58 0.437297 AU
65418768 km
7.78 km/s
2070-Sep-28 17:57 0.494962 AU
74045326 km
21.38 km/s
2075-Apr-01 14:24 0.109088 AU
16319258 km
6.36 km/s
2075-Oct-25 10:16 0.332744 AU
49777723 km
6.00 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
24.73

Orbit Quality

RMS
0.85373
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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