SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 FZ12

2016 FZ12

2016 FZ12 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.135 AU it takes 1.21 yr to circle the Sun.

Apollo Observations: 67
Orbital Period · P
1.21 yr
v(q)
38.1 km/s
v(Q)
20.5 km/s
Diameter · ≈
0.02 km
TJ
5.48
Eccentricity · e
0.3001

Orbit and dynamics

The path is an ellipse reaching 0.794 AU from the Sun at perihelion and 1.476 AU at aphelion, a radial span of 0.682 AU.

Applying Kepler's third law to a = 1.135 AU gives an orbital period of 1.21 yr, or about 442 days.

An eccentricity of 0.3 makes the orbit moderately elongated.

Its inclination of 1.68° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 38.1 km/s at perihelion and falls to 20.5 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 = 26.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 67 observations and has a weighted RMS residual of 0.5056 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
1.135 AU
Eccentricity
0.3001
Perihelion
0.794 AU
Aphelion
1.475614 AU
Inclination
1.68°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
226.97°

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-Jun-28 23:10 0.459667 AU
68765175 km
8.78 km/s
2028-Apr-04 03:05 0.289673 AU
43334404 km
16.93 km/s
2032-Oct-02 17:11 0.038559 AU
5768309 km
9.40 km/s
2033-Jun-08 04:28 0.438135 AU
65544114 km
8.45 km/s
2038-Nov-12 11:55 0.148743 AU
22251670 km
6.14 km/s
2039-May-21 23:00 0.390925 AU
58481480 km
7.70 km/s
2044-Aug-21 00:40 0.327720 AU
49026239 km
6.58 km/s
2045-Jan-02 08:09 0.190246 AU
28460401 km
7.82 km/s
2045-Apr-27 02:37 0.299804 AU
44850026 km
5.98 km/s
2050-Jul-30 18:54 0.405170 AU
60612538 km
7.92 km/s
2051-Feb-28 23:27 0.112297 AU
16799424 km
5.51 km/s
2055-Sep-10 03:30 0.493979 AU
73898193 km
22.98 km/s
2056-Jul-13 16:29 0.444826 AU
66545079 km
8.57 km/s
2057-Mar-25 05:45 0.083232 AU
12451356 km
10.78 km/s
2061-Sep-20 04:41 0.282891 AU
42319858 km
16.67 km/s
2062-Jun-27 16:35 0.457854 AU
68493951 km
8.76 km/s
2063-Apr-05 22:45 0.300529 AU
44958453 km
17.26 km/s
2067-Oct-01 16:34 0.070695 AU
10575825 km
10.38 km/s
2068-Jun-10 23:24 0.442672 AU
66222821 km
8.53 km/s
2073-Oct-23 17:32 0.112083 AU
16767339 km
5.42 km/s
2074-May-26 22:44 0.406364 AU
60791223 km
7.96 km/s
2079-Aug-31 05:09 0.290757 AU
43496567 km
5.84 km/s
2079-Dec-19 07:10 0.189718 AU
28381448 km
7.75 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
26.8

Orbit Quality

RMS
0.50561
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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