SpaceAtlas Space Object Data
NASA JPL SBDB · 2009 VW

2009 VW

2009 VW belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.44 AU it takes 1.73 yr to circle the Sun.

Apollo Observations: 163
Orbital Period · P
1.73 yr
v(q)
46.9 km/s
v(Q)
13.1 km/s
Diameter · ≈
0.16 km
TJ
4.48
Eccentricity · e
0.5629

Orbit and dynamics

The path is an ellipse reaching 0.63 AU from the Sun at perihelion and 2.251 AU at aphelion, a radial span of 1.621 AU.

Applying Kepler's third law to a = 1.44 AU gives an orbital period of 1.73 yr, or about 631 days.

The high eccentricity (0.563) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 7.16° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 46.9 km/s at perihelion and falls to 13.1 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 = 21.75 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.16 km.

Observation record and orbit quality

The current orbit solution is based on 163 observations and has a weighted RMS residual of 0.4463 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
1.44 AU
Eccentricity
0.5629
Perihelion
0.63 AU
Aphelion
2.250576 AU
Inclination
7.16°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
248.25°

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-Nov-04 18:05 0.029251 AU
4375847 km
18.01 km/s
2030-Apr-17 11:08 0.243150 AU
36374656 km
24.75 km/s
2035-Aug-28 18:59 0.373226 AU
55833778 km
16.09 km/s
2042-Jun-25 07:00 0.344242 AU
51497874 km
14.88 km/s
2047-Nov-13 18:03 0.179947 AU
26919724 km
22.98 km/s
2049-Apr-25 15:31 0.081440 AU
12183282 km
19.87 km/s
2054-Sep-20 07:28 0.318029 AU
47576533 km
13.19 km/s
2061-Jul-12 09:27 0.380553 AU
56929894 km
16.72 km/s
2066-Nov-18 13:28 0.283717 AU
42443469 km
26.16 km/s
2068-May-01 00:18 0.040521 AU
6061828 km
17.01 km/s
2073-Oct-11 09:31 0.251845 AU
37675402 km
11.17 km/s
2075-Apr-05 18:36 0.498022 AU
74503020 km
32.53 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
21.75

Orbit Quality

RMS
0.44634
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.

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