SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 ME131

2015 ME131

2015 ME131 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.816 AU and a period of 0.74 yr.

Aten Observations: 62
Orbital Period · P
0.74 yr
v(q)
40.9 km/s
v(Q)
26.6 km/s
Diameter · ≈
0.41 km
TJ
7.02
Eccentricity · e
0.2122

Orbit and dynamics

Between its closest point (0.643 AU) and its farthest (0.99 AU), the heliocentric distance changes by 0.347 AU over every revolution.

One full revolution takes 0.74 yr (269 days), computed from the semi-major axis of 0.816 AU.

An eccentricity of 0.212 makes the orbit moderately elongated.

A steep inclination of 33.64° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 40.9 km/s at perihelion and falls to 26.6 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 19.69 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.41 km.

Observation record and orbit quality

Astrometry from 62 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5778 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
0.8164 AU
Eccentricity
0.2122
Perihelion
0.643 AU
Aphelion
0.98964 AU
Inclination
33.64°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
151.35°

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
2029-Feb-11 00:12 0.332611 AU
49757841 km
22.59 km/s
2032-Jan-16 04:31 0.389489 AU
58266661 km
22.49 km/s
2034-Aug-18 19:21 0.403637 AU
60383303 km
19.60 km/s
2037-Aug-13 04:05 0.135430 AU
20260055 km
16.58 km/s
2040-Mar-19 13:17 0.446989 AU
66868667 km
22.19 km/s
2040-Aug-05 11:15 0.151932 AU
22728713 km
17.99 km/s
2043-Feb-21 15:46 0.344752 AU
51574178 km
22.56 km/s
2043-Jul-27 21:53 0.419133 AU
62701388 km
22.99 km/s
2046-Jan-26 20:34 0.352472 AU
52728989 km
22.60 km/s
2048-Dec-30 08:39 0.456506 AU
68292260 km
21.84 km/s
2051-Aug-16 11:20 0.260405 AU
38956033 km
17.50 km/s
2054-Aug-10 00:06 0.044514 AU
6659247 km
16.72 km/s
2057-Mar-06 14:22 0.387740 AU
58005078 km
22.47 km/s
2057-Aug-01 12:36 0.280358 AU
41940985 km
20.08 km/s
2060-Feb-10 05:49 0.332431 AU
49730895 km
22.60 km/s
2063-Jan-15 17:38 0.390632 AU
58437722 km
22.49 km/s
2065-Aug-18 17:10 0.412787 AU
61752126 km
19.75 km/s
2068-Aug-13 13:34 0.158392 AU
23695081 km
16.66 km/s
2071-Mar-24 07:38 0.465388 AU
69621011 km
22.04 km/s
2071-Aug-07 13:10 0.114701 AU
17158954 km
17.51 km/s
2074-Feb-26 07:29 0.357279 AU
53448104 km
22.54 km/s
2074-Jul-29 19:00 0.367699 AU
55006925 km
21.84 km/s
2077-Feb-01 19:50 0.339384 AU
50771111 km
22.61 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
19.69

Orbit Quality

RMS
0.57782
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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