SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 YN1

2016 YN1

2016 YN1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.152 AU it takes 1.24 yr to circle the Sun.

Apollo Observations: 40
Orbital Period · P
1.24 yr
v(q)
34.8 km/s
v(Q)
22.1 km/s
Diameter · ≈
0.07 km
TJ
5.43
Eccentricity · e
0.2226

Orbit and dynamics

Between its closest point (0.895 AU) and its farthest (1.408 AU), the heliocentric distance changes by 0.513 AU over every revolution.

One full revolution takes 1.24 yr (452 days), computed from the semi-major axis of 1.152 AU.

An eccentricity of 0.223 makes the orbit moderately elongated.

The orbital plane is tilted 7.67° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.8 km/s at perihelion and falls to 22.1 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 = 23.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

Astrometry from 40 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4716 arcseconds.

Condition code U = 4 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
1.152 AU
Eccentricity
0.2226
Perihelion
0.895 AU
Aphelion
1.408435 AU
Inclination
7.67°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
173.72°

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-Sep-22 08:33 0.419028 AU
62685640 km
7.86 km/s
2028-Jun-23 17:59 0.496262 AU
74239773 km
20.09 km/s
2032-Oct-25 01:54 0.383623 AU
57389163 km
6.77 km/s
2033-Jun-08 20:11 0.191016 AU
28575648 km
10.44 km/s
2038-Mar-16 14:26 0.136086 AU
20358165 km
5.89 km/s
2038-Jun-25 17:24 0.201661 AU
30168102 km
4.85 km/s
2043-Jan-09 23:08 0.119330 AU
17851587 km
9.96 km/s
2043-Aug-07 11:55 0.340868 AU
50993134 km
7.14 km/s
2047-Dec-22 03:41 0.451894 AU
67602383 km
19.70 km/s
2048-Sep-06 23:00 0.410203 AU
61365427 km
7.93 km/s
2053-Oct-07 12:11 0.412218 AU
61666885 km
7.53 km/s
2054-Jun-16 23:51 0.340785 AU
50980661 km
15.38 km/s
2058-Nov-15 14:13 0.334087 AU
49978664 km
5.55 km/s
2059-Jun-02 17:39 0.123887 AU
18533244 km
5.97 km/s
2064-Jan-27 11:05 0.041714 AU
6240357 km
6.38 km/s
2064-Jul-20 03:55 0.285061 AU
42644560 km
6.28 km/s
2068-Dec-31 01:40 0.268099 AU
40107014 km
14.22 km/s
2069-Aug-21 00:12 0.380801 AU
56967055 km
7.64 km/s
2074-Sep-17 15:51 0.419660 AU
62780261 km
7.93 km/s
2079-Oct-16 13:31 0.401923 AU
60126793 km
7.20 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
23.6

Orbit Quality

RMS
0.47159
Condition
4
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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