SpaceAtlas Space Object Data
NASA JPL SBDB · 2011 YG6

2011 YG6

2011 YG6 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.165 AU it takes 1.26 yr to circle the Sun.

Apollo Observations: 201
Orbital Period · P
1.26 yr
v(q)
37.6 km/s
v(Q)
20.3 km/s
Diameter · ≈
0.22 km
TJ
5.26
Eccentricity · e
0.2989

Orbit and dynamics

Between its closest point (0.816 AU) and its farthest (1.513 AU), the heliocentric distance changes by 0.697 AU over every revolution.

One full revolution takes 1.26 yr (459 days), computed from the semi-major axis of 1.165 AU.

An eccentricity of 0.299 makes the orbit moderately elongated.

A steep inclination of 28.06° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 37.6 km/s at perihelion and falls to 20.3 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 = 21.09 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.22 km.

Observation record and orbit quality

Astrometry from 201 individual observations underpins this orbit; the fit leaves an RMS residual of 0.2795 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
1.165 AU
Eccentricity
0.2989
Perihelion
0.816 AU
Aphelion
1.513219 AU
Inclination
28.06°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
242.05°

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-Jan-02 07:05 0.423169 AU
63305176 km
25.78 km/s
2030-Jun-14 15:55 0.294199 AU
44011604 km
22.46 km/s
2035-Jun-21 10:16 0.135122 AU
20213891 km
19.04 km/s
2040-Jun-26 09:58 0.032460 AU
4855872 km
16.40 km/s
2045-Jul-02 00:30 0.195100 AU
29186509 km
14.50 km/s
2045-Dec-29 11:30 0.475201 AU
71089066 km
14.26 km/s
2050-Jul-04 06:44 0.368988 AU
55199822 km
14.06 km/s
2050-Dec-20 17:03 0.321222 AU
48054136 km
14.28 km/s
2055-Dec-19 00:12 0.161972 AU
24230672 km
15.12 km/s
2060-Dec-20 19:55 0.082146 AU
12288873 km
17.38 km/s
2065-Dec-26 02:17 0.225609 AU
33750685 km
20.92 km/s
2069-Jun-06 14:43 0.479174 AU
71683398 km
26.96 km/s
2071-Jan-01 16:18 0.402662 AU
60237327 km
25.26 km/s
2074-Jun-14 13:19 0.300907 AU
45015011 km
22.63 km/s
2079-Jun-22 01:52 0.122693 AU
18354596 km
18.80 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
21.09

Orbit Quality

RMS
0.27951
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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