SpaceAtlas Space Object Data
NASA JPL SBDB · 612027

612027

612027 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.085 AU it takes 1.13 yr to circle the Sun.

Apollo Observations: 186
Orbital Period · P
1.13 yr
v(q)
37.7 km/s
v(Q)
21.7 km/s
Diameter · ≈
0.26 km
TJ
5.59
Eccentricity · e
0.2704

Orbit and dynamics

Between its closest point (0.792 AU) and its farthest (1.378 AU), the heliocentric distance changes by 0.586 AU over every revolution.

One full revolution takes 1.13 yr (413 days), computed from the semi-major axis of 1.085 AU.

An eccentricity of 0.27 makes the orbit moderately elongated.

A steep inclination of 25.03° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 37.7 km/s at perihelion and falls to 21.7 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 = 20.68 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.26 km.

Observation record and orbit quality

Astrometry from 186 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4802 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
1.085 AU
Eccentricity
0.2704
Perihelion
0.792 AU
Aphelion
1.378384 AU
Inclination
25.03°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
112.33°

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-Apr-07 14:45 0.486440 AU
72770362 km
23.53 km/s
2030-Mar-28 13:10 0.301591 AU
45117421 km
13.27 km/s
2030-Aug-24 12:49 0.336734 AU
50374619 km
15.32 km/s
2031-Nov-08 13:00 0.422287 AU
63173168 km
23.18 km/s
2038-Apr-12 03:12 0.280010 AU
41888864 km
17.36 km/s
2039-Mar-13 01:09 0.428150 AU
64050306 km
13.27 km/s
2039-Sep-27 10:28 0.170822 AU
25554577 km
15.60 km/s
2047-Apr-08 08:34 0.212596 AU
31803926 km
13.91 km/s
2048-Oct-21 13:46 0.223540 AU
33441146 km
18.31 km/s
2055-Apr-09 00:11 0.459125 AU
68684070 km
22.68 km/s
2056-Mar-26 08:33 0.317349 AU
47474733 km
13.26 km/s
2056-Aug-28 19:45 0.315571 AU
47208714 km
15.38 km/s
2057-Nov-10 09:03 0.452481 AU
67690256 km
23.97 km/s
2064-Apr-11 18:38 0.265650 AU
39740647 km
16.91 km/s
2065-Mar-11 02:01 0.437552 AU
65456905 km
13.27 km/s
2065-Sep-29 11:25 0.161795 AU
24204240 km
15.69 km/s
2073-Apr-07 12:25 0.214997 AU
32163124 km
13.85 km/s
2074-Oct-23 02:18 0.232367 AU
34761613 km
18.51 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
20.68

Orbit Quality

RMS
0.48021
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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