SpaceAtlas Space Object Data
NASA JPL SBDB · 2005 MF5

2005 MF5

2005 MF5 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.804 AU and a period of 0.72 yr.

Aten Observations: 95
Orbital Period · P
0.72 yr
v(q)
49.7 km/s
v(Q)
22.2 km/s
Diameter · ≈
0.16 km
TJ
7.11
Eccentricity · e
0.3818

Orbit and dynamics

Between its closest point (0.497 AU) and its farthest (1.111 AU), the heliocentric distance changes by 0.614 AU over every revolution.

One full revolution takes 0.72 yr (263 days), computed from the semi-major axis of 0.804 AU.

An eccentricity of 0.382 makes the orbit moderately elongated.

A steep inclination of 29.52° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 49.7 km/s at perihelion and falls to 22.2 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 = 21.73 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.16 km.

Observation record and orbit quality

Astrometry from 95 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5213 arcseconds.

Condition code U = 1 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
0.8038 AU
Eccentricity
0.3818
Perihelion
0.497 AU
Aphelion
1.110691 AU
Inclination
29.52°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
212.99°

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
2028-Jun-14 08:50 0.341515 AU
51089953 km
17.53 km/s
2031-Feb-05 05:02 0.495109 AU
74067314 km
24.13 km/s
2031-Jul-06 14:24 0.171936 AU
25721285 km
16.96 km/s
2036-Jun-30 00:10 0.090297 AU
13508305 km
14.83 km/s
2038-Dec-27 22:29 0.485239 AU
72590784 km
27.52 km/s
2041-Jun-20 05:15 0.229691 AU
34361246 km
15.55 km/s
2044-Jan-20 07:45 0.483967 AU
72400464 km
26.22 km/s
2044-Jul-05 13:28 0.305493 AU
45701033 km
20.14 km/s
2046-Jun-13 09:22 0.401088 AU
60001857 km
19.07 km/s
2049-Jul-04 23:28 0.116015 AU
17355545 km
15.86 km/s
2051-Dec-13 05:48 0.498513 AU
74576430 km
27.32 km/s
2054-Jun-27 08:09 0.128835 AU
19273507 km
14.80 km/s
2057-Jan-04 03:43 0.482113 AU
72123020 km
27.30 km/s
2057-Jul-02 17:16 0.451173 AU
67494457 km
24.31 km/s
2059-Jun-17 16:29 0.283832 AU
42460728 km
16.38 km/s
2062-Jan-27 18:53 0.488660 AU
73102476 km
25.33 km/s
2062-Jul-06 17:38 0.237338 AU
35505248 km
18.43 km/s
2064-Jun-12 10:27 0.461216 AU
68996976 km
20.84 km/s
2067-Jul-03 13:26 0.083401 AU
12476545 km
15.18 km/s
2069-Dec-20 07:04 0.490846 AU
73429498 km
27.54 km/s
2072-Jun-23 11:39 0.176657 AU
26427502 km
15.04 km/s
2075-Jan-12 07:55 0.481796 AU
72075695 km
26.88 km/s
2075-Jul-05 02:40 0.378657 AU
56646239 km
22.18 km/s
2077-Jun-14 20:01 0.339734 AU
50823517 km
17.51 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
21.73

Orbit Quality

RMS
0.52129
Condition
1
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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