SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 VZ2

2015 VZ2

2015 VZ2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.708 AU and a period of 0.60 yr.

Aten Observations: 199
Orbital Period · P
0.60 yr
v(q)
55.5 km/s
v(Q)
22.6 km/s
Diameter · ≈
0.11 km
TJ
7.99
Eccentricity · e
0.4225

Orbit and dynamics

Between its closest point (0.409 AU) and its farthest (1.007 AU), the heliocentric distance changes by 0.598 AU over every revolution.

One full revolution takes 0.60 yr (218 days), computed from the semi-major axis of 0.708 AU.

The high eccentricity (0.422) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 16.98° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 55.5 km/s at perihelion and falls to 22.6 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 = 22.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.11 km.

Observation record and orbit quality

Astrometry from 199 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3809 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
0.7082 AU
Eccentricity
0.4225
Perihelion
0.409 AU
Aphelion
1.007414 AU
Inclination
16.98°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
88.6°

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-Nov-21 16:53 0.376964 AU
56392977 km
20.44 km/s
2030-Nov-18 03:12 0.481669 AU
72056715 km
24.24 km/s
2031-Nov-02 01:07 0.418187 AU
62559929 km
23.32 km/s
2034-Oct-29 13:03 0.309183 AU
46253135 km
19.56 km/s
2037-Oct-27 08:00 0.202957 AU
30361890 km
16.02 km/s
2038-Feb-18 00:34 0.490011 AU
73304575 km
13.00 km/s
2040-Oct-27 15:19 0.103910 AU
15544764 km
13.04 km/s
2043-Nov-02 03:29 0.021061 AU
3150726 km
11.20 km/s
2046-Nov-08 21:52 0.043161 AU
6456855 km
10.72 km/s
2049-Nov-16 19:06 0.104316 AU
15605465 km
11.35 km/s
2052-Nov-21 22:27 0.176022 AU
26332541 km
13.28 km/s
2055-Nov-23 22:45 0.260780 AU
39012187 km
16.18 km/s
2058-Nov-22 04:46 0.354178 AU
52984341 km
19.56 km/s
2061-Nov-19 02:01 0.451888 AU
67601524 km
23.11 km/s
2062-Nov-03 02:01 0.452185 AU
67645913 km
24.53 km/s
2065-Oct-30 13:39 0.352101 AU
52673564 km
21.05 km/s
2068-Oct-27 22:16 0.254503 AU
38073179 km
17.74 km/s
2071-Oct-27 18:42 0.159742 AU
23897002 km
14.70 km/s
2072-Feb-10 20:46 0.471501 AU
70535614 km
10.15 km/s
2074-Oct-29 08:08 0.073453 AU
10988442 km
12.27 km/s
2077-Nov-03 10:00 0.009883 AU
1478434 km
10.97 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
22.6

Orbit Quality

RMS
0.38086
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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