SpaceAtlas Space Object Data
NASA JPL SBDB · 2011 CQ1

2011 CQ1

2011 CQ1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.837 AU and a period of 0.77 yr.

Aten Observations: 35
Orbital Period · P
0.77 yr
v(q)
40.1 km/s
v(Q)
26.5 km/s
TJ
7
Eccentricity · e
0.2046

Orbit and dynamics

Between its closest point (0.666 AU) and its farthest (1.008 AU), the heliocentric distance changes by 0.342 AU over every revolution.

One full revolution takes 0.77 yr (280 days), computed from the semi-major axis of 0.837 AU.

An eccentricity of 0.205 makes the orbit moderately elongated.

The orbital plane is tilted 5.28° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 40.1 km/s at perihelion and falls to 26.5 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

Neither a measured diameter nor a reliable absolute magnitude is available for 2011 CQ1, so its physical size remains unconstrained.

Observation record and orbit quality

Astrometry from 35 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4939 arcseconds.

Condition code U = 6 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
0.8372 AU
Eccentricity
0.2046
Perihelion
0.666 AU
Aphelion
1.008491 AU
Inclination
5.28°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
233.45°

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
2026-Dec-14 21:36 0.300255 AU
44917536 km
14.02 km/s
2027-May-26 09:33 0.320452 AU
47938877 km
8.79 km/s
2030-Jul-19 03:58 0.350149 AU
52381479 km
11.13 km/s
2033-Sep-13 08:48 0.283703 AU
42441355 km
7.73 km/s
2034-Feb-09 21:42 0.181674 AU
27178094 km
10.91 km/s
2036-Dec-13 23:53 0.089783 AU
13431317 km
6.40 km/s
2037-Apr-05 17:28 0.226236 AU
33844438 km
3.20 km/s
2039-Dec-21 03:30 0.462501 AU
69189221 km
19.76 km/s
2040-Jun-20 22:01 0.345630 AU
51705517 km
10.58 km/s
2043-Aug-17 10:55 0.324959 AU
48613150 km
10.04 km/s
2044-Feb-05 17:46 0.347615 AU
52002477 km
16.48 km/s
2047-Jan-20 11:05 0.031361 AU
4691578 km
4.58 km/s
2049-Dec-16 12:00 0.364773 AU
54569270 km
16.65 km/s
2050-Jun-08 09:54 0.333018 AU
49818723 km
9.82 km/s
2053-Aug-09 05:52 0.331991 AU
49665093 km
10.41 km/s
2054-Feb-03 08:53 0.389960 AU
58337131 km
18.03 km/s
2057-Jan-24 11:54 0.019216 AU
2874671 km
4.64 km/s
2059-Dec-17 00:34 0.389141 AU
58214689 km
17.40 km/s
2060-Jun-11 09:29 0.335541 AU
50196176 km
10.04 km/s
2063-Aug-19 19:18 0.320530 AU
47950574 km
9.73 km/s
2064-Feb-06 15:40 0.320337 AU
47921784 km
15.42 km/s
2066-Dec-15 13:59 0.079209 AU
11849484 km
5.68 km/s
2070-Jul-05 14:06 0.347594 AU
51999391 km
10.94 km/s
2073-Sep-21 22:01 0.257851 AU
38573923 km
6.66 km/s
2074-Feb-11 07:48 0.103674 AU
15509452 km
8.80 km/s
2076-Dec-11 10:27 0.239768 AU
35868772 km
12.70 km/s
2077-May-21 19:42 0.307408 AU
45987653 km
8.36 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
32.1

Orbit Quality

RMS
0.49391
Condition
6
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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