SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 NA

2008 NA

2008 NA is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.962 AU and a period of 0.94 yr.

Aten Observations: 131
Orbital Period · P
0.94 yr
v(q)
41.5 km/s
v(Q)
22.2 km/s
Diameter · ≈
0.06 km
TJ
6.22
Eccentricity · e
0.3021

Orbit and dynamics

Between its closest point (0.671 AU) and its farthest (1.253 AU), the heliocentric distance changes by 0.582 AU over every revolution.

One full revolution takes 0.94 yr (345 days), computed from the semi-major axis of 0.962 AU.

An eccentricity of 0.302 makes the orbit moderately elongated.

The orbital plane is tilted 10.02° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 41.5 km/s at perihelion and falls to 22.2 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 = 23.73 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 131 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5665 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
0.9622 AU
Eccentricity
0.3021
Perihelion
0.671 AU
Aphelion
1.252881 AU
Inclination
10.02°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
91.08°

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
2042-Jul-03 14:45 0.117423 AU
17566287 km
7.55 km/s
2044-Dec-08 12:10 0.182909 AU
27362856 km
8.16 km/s
2058-Jul-04 03:40 0.189116 AU
28291365 km
15.01 km/s
2059-Jul-07 01:50 0.139617 AU
20886453 km
7.35 km/s
2061-Dec-02 23:00 0.168242 AU
25168711 km
8.13 km/s
2075-Jul-01 12:59 0.097716 AU
14618049 km
12.37 km/s
2078-Nov-16 04:50 0.142691 AU
21346223 km
10.56 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
23.73

Orbit Quality

RMS
0.56654
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.

Keep exploring

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