SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 XR23

2016 XR23

2016 XR23 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.07 AU it takes 1.11 yr to circle the Sun.

Apollo Observations: 97
Orbital Period · P
1.11 yr
v(q)
33.4 km/s
v(Q)
24.8 km/s
Diameter · ≈
0.03 km
TJ
5.75
Eccentricity · e
0.1484

Orbit and dynamics

Between its closest point (0.911 AU) and its farthest (1.229 AU), the heliocentric distance changes by 0.318 AU over every revolution.

One full revolution takes 1.11 yr (404 days), computed from the semi-major axis of 1.07 AU.

An eccentricity of 0.148 makes the orbit moderately elongated.

The orbital plane is tilted 7.07° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.4 km/s at perihelion and falls to 24.8 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 = 25.25 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 97 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4674 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
1.07 AU
Eccentricity
0.1484
Perihelion
0.911 AU
Aphelion
1.228788 AU
Inclination
7.07°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
258.77°

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
2036-Jul-01 01:05 0.182831 AU
27351198 km
9.87 km/s
2037-Dec-20 13:41 0.153451 AU
22955958 km
9.59 km/s
2047-May-22 16:16 0.193991 AU
29020576 km
4.77 km/s
2047-Nov-24 22:27 0.097726 AU
14619548 km
4.10 km/s
2057-Jul-04 03:52 0.072763 AU
10885129 km
6.51 km/s
2068-Dec-02 16:46 0.073744 AU
11031878 km
4.30 km/s
2078-Jul-02 10:23 0.139518 AU
20871666 km
8.65 km/s
2079-Dec-22 12:07 0.179290 AU
26821441 km
10.31 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
25.25

Orbit Quality

RMS
0.46744
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.