SpaceAtlas Space Object Data
NASA JPL SBDB · 2024 AD4

2024 AD4

2024 AD4 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.856 AU and a period of 0.79 yr.

Aten Observations: 69
Orbital Period · P
0.79 yr
v(q)
40.2 km/s
v(Q)
25.8 km/s
Diameter · ≈
0.04 km
TJ
6.8
Eccentricity · e
0.2179

Orbit and dynamics

The path is an ellipse reaching 0.669 AU from the Sun at perihelion and 1.042 AU at aphelion, a radial span of 0.373 AU.

Applying Kepler's third law to a = 0.856 AU gives an orbital period of 0.79 yr, or about 289 days.

An eccentricity of 0.218 makes the orbit moderately elongated.

A steep inclination of 25.32° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 40.2 km/s at perihelion and falls to 25.8 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 = 24.81 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 69 observations and has a weighted RMS residual of 0.2766 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
0.8555 AU
Eccentricity
0.2179
Perihelion
0.669 AU
Aphelion
1.041913 AU
Inclination
25.32°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
177.21°

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-Sep-05 20:05 0.416894 AU
62366393 km
15.99 km/s
2028-Jan-21 16:02 0.214514 AU
32090818 km
14.30 km/s
2031-Aug-06 04:17 0.363294 AU
54347948 km
18.25 km/s
2032-Jan-26 22:47 0.430148 AU
64349243 km
18.87 km/s
2035-Jan-09 07:57 0.411541 AU
61565612 km
20.25 km/s
2035-Jul-10 01:44 0.345875 AU
51742215 km
18.44 km/s
2039-Jan-09 06:13 0.179441 AU
26844058 km
14.94 km/s
2039-Jun-12 12:21 0.373637 AU
55895287 km
17.35 km/s
2043-Jan-14 20:52 0.058528 AU
8755605 km
13.04 km/s
2043-May-08 10:45 0.429117 AU
64194998 km
13.13 km/s
2046-Aug-31 01:23 0.402723 AU
60246543 km
16.62 km/s
2047-Jan-22 17:39 0.231664 AU
34656388 km
14.82 km/s
2050-Aug-02 11:46 0.356594 AU
53345640 km
18.36 km/s
2051-Jan-27 01:14 0.439152 AU
65696190 km
19.60 km/s
2054-Jan-08 17:30 0.368304 AU
55097429 km
19.59 km/s
2054-Jul-07 05:12 0.346720 AU
51868537 km
18.40 km/s
2058-Jan-09 06:31 0.148084 AU
22152987 km
14.66 km/s
2058-Jun-10 05:04 0.375819 AU
56221649 km
17.21 km/s
2062-Jan-15 01:01 0.060420 AU
9038671 km
13.04 km/s
2065-Aug-29 20:40 0.397876 AU
59521425 km
16.73 km/s
2066-Jan-22 18:59 0.227080 AU
33970668 km
14.92 km/s
2069-Aug-01 18:46 0.355430 AU
53171526 km
18.37 km/s
2070-Jan-26 22:32 0.433379 AU
64832504 km
19.71 km/s
2073-Jan-08 11:48 0.357453 AU
53474265 km
19.53 km/s
2073-Jul-06 19:18 0.346925 AU
51899169 km
18.40 km/s
2077-Jan-09 01:38 0.141543 AU
21174474 km
14.64 km/s
2077-Jun-09 20:44 0.376015 AU
56251034 km
17.20 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
24.81

Orbit Quality

RMS
0.27664
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.