SpaceAtlas Space Object Data
NASA JPL SBDB · 446833

446833

446833 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.052 AU it takes 1.08 yr to circle the Sun.

Apollo Observations: 270
Orbital Period · P
1.08 yr
v(q)
43.4 km/s
v(Q)
19.4 km/s
Diameter · ≈
0.23 km
TJ
5.77
Eccentricity · e
0.3813

Orbit and dynamics

Between its closest point (0.651 AU) and its farthest (1.453 AU), the heliocentric distance changes by 0.802 AU over every revolution.

One full revolution takes 1.08 yr (394 days), computed from the semi-major axis of 1.052 AU.

An eccentricity of 0.381 makes the orbit moderately elongated.

The orbital plane is tilted 6.61° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 43.4 km/s at perihelion and falls to 19.4 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 = 20.95 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.23 km.

Observation record and orbit quality

Astrometry from 270 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4627 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
1.052 AU
Eccentricity
0.3813
Perihelion
0.651 AU
Aphelion
1.453128 AU
Inclination
6.61°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
256.98°

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-Sep-22 16:26 0.215700 AU
32268205 km
17.46 km/s
2029-Sep-11 17:49 0.265948 AU
39785289 km
7.92 km/s
2029-Nov-22 01:41 0.276641 AU
41384958 km
8.81 km/s
2030-Jul-28 16:19 0.436118 AU
65242265 km
10.07 km/s
2031-Feb-02 05:44 0.327409 AU
48979622 km
13.17 km/s
2031-Jun-19 17:15 0.401246 AU
60025614 km
9.19 km/s
2032-Apr-26 04:18 0.113477 AU
16975859 km
10.17 km/s
2033-May-20 16:57 0.450969 AU
67464015 km
24.37 km/s
2042-Sep-28 16:22 0.094534 AU
14142093 km
13.36 km/s
2043-Aug-28 10:02 0.337167 AU
50439511 km
8.85 km/s
2043-Dec-15 17:43 0.318457 AU
47640418 km
11.71 km/s
2044-Jul-18 19:31 0.443635 AU
66366852 km
10.10 km/s
2045-Feb-18 19:10 0.304658 AU
45576220 km
11.98 km/s
2045-Jun-07 09:09 0.359315 AU
53752685 km
8.39 km/s
2046-May-03 04:15 0.128090 AU
19162050 km
13.38 km/s
2056-Sep-28 21:24 0.082483 AU
12339311 km
12.80 km/s
2057-Aug-26 17:02 0.341717 AU
51120138 km
8.93 km/s
2057-Dec-17 00:07 0.320739 AU
47981841 km
11.87 km/s
2058-Jul-18 21:05 0.442054 AU
66130272 km
10.10 km/s
2059-Feb-19 19:24 0.303953 AU
45470756 km
11.95 km/s
2059-Jun-07 21:26 0.357578 AU
53492888 km
8.38 km/s
2060-May-02 14:12 0.125194 AU
18728697 km
13.21 km/s
2070-Sep-26 12:47 0.142117 AU
21260354 km
15.06 km/s
2071-Sep-05 00:52 0.299784 AU
44846975 km
8.35 km/s
2071-Dec-04 01:06 0.299234 AU
44764826 km
10.32 km/s
2072-Jul-25 03:31 0.436205 AU
65255397 km
10.06 km/s
2073-Feb-06 12:00 0.323170 AU
48345534 km
12.93 km/s
2073-Jun-17 06:00 0.389764 AU
58307932 km
9.00 km/s
2074-Apr-27 18:50 0.112439 AU
16820615 km
10.30 km/s
2075-May-20 22:10 0.433657 AU
64874215 km
23.81 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
20.95

Orbit Quality

RMS
0.46269
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.

Keep exploring

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