SpaceAtlas Space Object Data
NASA JPL SBDB · 2002 VX91

2002 VX91

2002 VX91 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.984 AU and a period of 0.98 yr.

Aten Observations: 45
Orbital Period · P
0.98 yr
v(q)
36.8 km/s
v(Q)
24.5 km/s
Diameter · ≈
0.05 km
TJ
6.14
Eccentricity · e
0.2014

Orbit and dynamics

Between its closest point (0.786 AU) and its farthest (1.183 AU), the heliocentric distance changes by 0.397 AU over every revolution.

One full revolution takes 0.98 yr (357 days), computed from the semi-major axis of 0.984 AU.

An eccentricity of 0.201 makes the orbit moderately elongated.

Its inclination of 2.34° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36.8 km/s at perihelion and falls to 24.5 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 = 24.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 45 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6785 arcseconds.

Condition code U = 2 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
0.9843 AU
Eccentricity
0.2014
Perihelion
0.786 AU
Aphelion
1.182538 AU
Inclination
2.34°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
141.23°

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
2040-Nov-20 07:05 0.489797 AU
73272520 km
21.56 km/s
2041-Nov-14 09:36 0.343607 AU
51402811 km
17.02 km/s
2042-Nov-08 15:33 0.194913 AU
29158600 km
12.48 km/s
2043-Nov-03 14:02 0.049355 AU
7383473 km
8.09 km/s
2044-Nov-04 07:42 0.085424 AU
12779219 km
4.26 km/s
2045-Sep-04 01:25 0.190595 AU
28512574 km
5.75 km/s
2045-Dec-14 12:38 0.174699 AU
26134661 km
5.23 km/s
2046-Aug-04 17:23 0.226296 AU
33853389 km
7.23 km/s
2047-Jan-10 10:58 0.203389 AU
30426539 km
5.79 km/s
2047-Jul-09 00:34 0.231121 AU
34575261 km
7.47 km/s
2048-Feb-05 07:54 0.191961 AU
28717026 km
5.52 km/s
2048-Jun-09 14:53 0.207645 AU
31063193 km
6.48 km/s
2049-Mar-10 23:59 0.131729 AU
19706422 km
4.23 km/s
2049-Apr-26 17:24 0.139497 AU
20868478 km
3.67 km/s
2050-Mar-31 13:04 0.017790 AU
2661360 km
6.63 km/s
2051-Mar-26 14:49 0.145437 AU
21757137 km
10.91 km/s
2052-Mar-19 23:33 0.290405 AU
43443901 km
15.34 km/s
2053-Mar-14 04:45 0.434853 AU
65053084 km
19.79 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
24.3

Orbit Quality

RMS
0.67848
Condition
2
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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