SpaceAtlas Space Object Data
NASA JPL SBDB · 2005 QQ87

2005 QQ87

2005 QQ87 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.002 AU it takes 1.00 yr to circle the Sun.

Apollo Observations: 89
Orbital Period · P
1.00 yr
v(q)
40.6 km/s
v(Q)
21.8 km/s
Diameter · ≈
0.1 km
TJ
5.89
Eccentricity · e
0.3015

Orbit and dynamics

Between its closest point (0.7 AU) and its farthest (1.304 AU), the heliocentric distance changes by 0.604 AU over every revolution.

One full revolution takes 1.00 yr (366 days), computed from the semi-major axis of 1.002 AU.

An eccentricity of 0.301 makes the orbit moderately elongated.

A steep inclination of 33.97° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 40.6 km/s at perihelion and falls to 21.8 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 = 22.84 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

Astrometry from 89 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5013 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
1.002 AU
Eccentricity
0.3015
Perihelion
0.7 AU
Aphelion
1.304103 AU
Inclination
33.97°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
4.95°

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-Aug-27 16:36 0.149780 AU
22406810 km
20.61 km/s
2028-Aug-27 06:42 0.162607 AU
24325694 km
20.90 km/s
2029-Aug-27 22:00 0.176465 AU
26398836 km
21.18 km/s
2030-Aug-28 13:40 0.191460 AU
28642038 km
21.52 km/s
2031-Aug-29 06:27 0.207355 AU
31019839 km
21.86 km/s
2032-Aug-29 00:04 0.224462 AU
33578968 km
22.23 km/s
2033-Aug-29 18:23 0.242426 AU
36266437 km
22.65 km/s
2034-Aug-30 13:59 0.260583 AU
38982596 km
23.05 km/s
2035-Aug-31 09:19 0.278968 AU
41733049 km
23.48 km/s
2036-Aug-31 05:59 0.298056 AU
44588573 km
23.93 km/s
2037-Sep-01 02:47 0.317431 AU
47487028 km
24.38 km/s
2038-Sep-01 23:59 0.337191 AU
50442984 km
24.87 km/s
2039-Sep-02 22:23 0.357025 AU
53410123 km
25.34 km/s
2040-Sep-02 20:42 0.377380 AU
56455318 km
25.85 km/s
2041-Sep-03 20:24 0.398205 AU
59570623 km
26.38 km/s
2042-Sep-04 20:30 0.418643 AU
62628067 km
26.88 km/s
2043-Sep-05 19:06 0.438113 AU
65540722 km
27.40 km/s
2044-Sep-05 18:38 0.457676 AU
68467339 km
27.89 km/s
2045-Sep-06 17:21 0.477094 AU
71372182 km
28.40 km/s
2046-Sep-07 17:13 0.496462 AU
74269598 km
28.93 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
22.84

Orbit Quality

RMS
0.50127
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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