SpaceAtlas Space Object Data
NASA JPL SBDB · 2004 KG1

2004 KG1

2004 KG1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.83 AU and a period of 0.76 yr.

Aten Observations: 113
Orbital Period · P
0.76 yr
v(q)
50.4 km/s
v(Q)
21.2 km/s
Diameter · ≈
0.06 km
TJ
7
Eccentricity · e
0.4072

Orbit and dynamics

Between its closest point (0.492 AU) and its farthest (1.168 AU), the heliocentric distance changes by 0.676 AU over every revolution.

One full revolution takes 0.76 yr (276 days), computed from the semi-major axis of 0.83 AU.

The high eccentricity (0.407) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 1.91° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 50.4 km/s at perihelion and falls to 21.2 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 = 23.96 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 113 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4359 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
0.8302 AU
Eccentricity
0.4072
Perihelion
0.492 AU
Aphelion
1.168257 AU
Inclination
1.91°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
162.11°

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
2029-Jun-18 16:29 0.147496 AU
22065024 km
8.07 km/s
2032-May-24 03:52 0.074540 AU
11151011 km
8.35 km/s
2035-May-18 15:08 0.057850 AU
8654224 km
11.94 km/s
2048-Aug-07 07:30 0.124825 AU
18673493 km
13.88 km/s
2051-Aug-07 10:36 0.044892 AU
6715822 km
9.30 km/s
2054-Jul-14 12:07 0.140180 AU
20970686 km
8.00 km/s
2057-Jun-14 21:04 0.142933 AU
21382494 km
8.03 km/s
2060-May-20 13:58 0.045483 AU
6804160 km
8.95 km/s
2063-May-19 06:31 0.100395 AU
15018929 km
13.26 km/s
2076-Aug-08 01:56 0.087615 AU
13107059 km
12.63 km/s
2079-Aug-04 21:05 0.067002 AU
10023357 km
8.62 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
23.96

Orbit Quality

RMS
0.43586
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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