SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 JP

2008 JP

2008 JP belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.547 AU it takes 1.92 yr to circle the Sun.

Apollo Observations: 39
Orbital Period · P
1.92 yr
v(q)
51.8 km/s
v(Q)
11.1 km/s
Diameter · ≈
0.25 km
TJ
4.15
Eccentricity · e
0.6484

Orbit and dynamics

Between its closest point (0.544 AU) and its farthest (2.55 AU), the heliocentric distance changes by 2.006 AU over every revolution.

One full revolution takes 1.92 yr (703 days), computed from the semi-major axis of 1.547 AU.

The high eccentricity (0.648) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 18.39° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 51.8 km/s at perihelion and falls to 11.1 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 = 20.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.25 km.

Observation record and orbit quality

Astrometry from 39 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6735 arcseconds.

Condition code U = 1 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
1.547 AU
Eccentricity
0.6484
Perihelion
0.544 AU
Aphelion
2.550075 AU
Inclination
18.39°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
99.19°

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-Dec-12 05:40 0.279248 AU
41774841 km
27.52 km/s
2029-Nov-02 14:23 0.312648 AU
46771467 km
18.67 km/s
2031-Sep-10 09:42 0.489130 AU
73172848 km
23.63 km/s
2033-Jul-18 22:57 0.479134 AU
71677396 km
17.70 km/s
2035-May-16 20:38 0.144189 AU
21570339 km
21.12 km/s
2037-Apr-26 10:56 0.451224 AU
67502088 km
34.42 km/s
2052-Dec-13 21:07 0.309979 AU
46372130 km
28.69 km/s
2054-Nov-07 12:34 0.291626 AU
43626657 km
18.63 km/s
2056-Sep-13 16:43 0.481416 AU
72018818 km
23.49 km/s
2058-Jul-25 00:00 0.489760 AU
73267062 km
18.92 km/s
2060-May-17 19:25 0.158845 AU
23762880 km
20.09 km/s
2062-Apr-28 14:59 0.414816 AU
62055650 km
33.26 km/s
2077-Dec-18 09:21 0.370758 AU
55464581 km
30.93 km/s
2079-Nov-17 01:58 0.247704 AU
37056045 km
19.23 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
20.8

Orbit Quality

RMS
0.67349
Condition
1
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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