SpaceAtlas Space Object Data
NASA JPL SBDB · 2001 CQ36

2001 CQ36

2001 CQ36 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.937 AU and a period of 0.91 yr.

Aten Observations: 159
Orbital Period · P
0.91 yr
v(q)
36.8 km/s
v(Q)
25.7 km/s
Diameter · ≈
0.1 km
TJ
6.39
Eccentricity · e
0.1772

Orbit and dynamics

The path is an ellipse reaching 0.771 AU from the Sun at perihelion and 1.104 AU at aphelion, a radial span of 0.333 AU.

Applying Kepler's third law to a = 0.937 AU gives an orbital period of 0.91 yr, or about 331 days.

An eccentricity of 0.177 makes the orbit moderately elongated.

Its inclination of 1.26° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36.8 km/s at perihelion and falls to 25.7 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 = 22.74 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

The current orbit solution is based on 159 observations and has a weighted RMS residual of 0.4006 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
0.9374 AU
Eccentricity
0.1772
Perihelion
0.771 AU
Aphelion
1.103507 AU
Inclination
1.26°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
52.34°

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
2031-Jan-31 23:53 0.022521 AU
3369081 km
5.21 km/s
2031-Sep-18 09:47 0.224647 AU
33606747 km
6.79 km/s
2032-May-29 08:52 0.148008 AU
22141669 km
9.39 km/s
2041-Jan-31 12:53 0.038644 AU
5781008 km
5.93 km/s
2041-Sep-24 03:43 0.224976 AU
33655904 km
6.86 km/s
2042-May-31 17:20 0.115607 AU
17294503 km
8.37 km/s
2051-Feb-03 14:49 0.140771 AU
21058979 km
9.21 km/s
2051-Oct-14 23:55 0.223382 AU
33417475 km
6.90 km/s
2052-Jun-01 10:54 0.019850 AU
2969472 km
5.32 km/s
2061-Feb-03 05:41 0.094638 AU
14157700 km
7.79 km/s
2061-Oct-04 21:26 0.227765 AU
34073172 km
7.02 km/s
2062-Jun-02 09:47 0.076128 AU
11388613 km
7.20 km/s
2071-Feb-03 09:37 0.021392 AU
3200230 km
5.25 km/s
2071-Sep-21 11:43 0.224199 AU
33539677 km
6.80 km/s
2072-Jun-01 02:06 0.142947 AU
21384570 km
9.21 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
22.74

Orbit Quality

RMS
0.40062
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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