SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 WT7

2022 WT7

2022 WT7 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.019 AU it takes 1.03 yr to circle the Sun.

Apollo Observations: 44
Orbital Period · P
1.03 yr
v(q)
36 km/s
v(Q)
24.2 km/s
Diameter · ≈
0.08 km
TJ
5.94
Eccentricity · e
0.1957

Orbit and dynamics

Between its closest point (0.82 AU) and its farthest (1.218 AU), the heliocentric distance changes by 0.398 AU over every revolution.

One full revolution takes 1.03 yr (376 days), computed from the semi-major axis of 1.019 AU.

An eccentricity of 0.196 makes the orbit moderately elongated.

The orbital plane is tilted 15.69° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 36 km/s at perihelion and falls to 24.2 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 = 23.28 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

Astrometry from 44 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3093 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
1.019 AU
Eccentricity
0.1957
Perihelion
0.82 AU
Aphelion
1.218418 AU
Inclination
15.69°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
309.17°

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
2053-Mar-06 01:28 0.399445 AU
59756071 km
15.98 km/s
2054-Mar-26 08:20 0.277689 AU
41541712 km
11.80 km/s
2055-Apr-24 20:59 0.204239 AU
30553688 km
10.70 km/s
2056-Jan-03 14:12 0.278386 AU
41645978 km
8.93 km/s
2056-May-22 01:39 0.185640 AU
27771294 km
10.90 km/s
2056-Dec-14 06:47 0.251167 AU
37574008 km
9.44 km/s
2057-Jun-18 16:53 0.214312 AU
32060657 km
10.92 km/s
2057-Nov-27 08:12 0.222051 AU
33218357 km
9.45 km/s
2058-Jul-20 07:17 0.260360 AU
38949234 km
9.85 km/s
2058-Nov-10 08:18 0.204907 AU
30653693 km
9.28 km/s
2059-Oct-24 09:40 0.227133 AU
33978615 km
9.89 km/s
2060-Oct-15 15:13 0.316395 AU
47332075 km
13.27 km/s
2061-Oct-18 04:50 0.454854 AU
68045233 km
18.29 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
23.28

Orbit Quality

RMS
0.30929
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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