SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 FO127

2017 FO127

2017 FO127 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.126 AU it takes 1.19 yr to circle the Sun.

Apollo Observations: 12
Orbital Period · P
1.19 yr
v(q)
35 km/s
v(Q)
22.5 km/s
Diameter · ≈
0.02 km
TJ
5.53
Eccentricity · e
0.2191

Orbit and dynamics

Between its closest point (0.88 AU) and its farthest (1.373 AU), the heliocentric distance changes by 0.493 AU over every revolution.

One full revolution takes 1.19 yr (436 days), computed from the semi-major axis of 1.126 AU.

An eccentricity of 0.219 makes the orbit moderately elongated.

Its inclination of 4.75° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35 km/s at perihelion and falls to 22.5 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

Astrometry from 12 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5107 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.126 AU
Eccentricity
0.2191
Perihelion
0.88 AU
Aphelion
1.372707 AU
Inclination
4.75°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
190.82°

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
2029-Mar-23 19:58 0.169251 AU
25319595 km
14.10 km/s
2029-Dec-11 09:55 0.392483 AU
58714662 km
7.73 km/s
2030-Sep-29 12:49 0.379660 AU
56796253 km
20.31 km/s
2035-Mar-17 19:09 0.292172 AU
43708296 km
18.51 km/s
2035-Dec-25 22:00 0.395053 AU
59099098 km
7.81 km/s
2036-Sep-22 12:28 0.205292 AU
30711215 km
15.96 km/s
2042-Sep-16 10:28 0.042732 AU
6392630 km
11.74 km/s
2048-Sep-08 21:32 0.021327 AU
3190520 km
7.90 km/s
2054-Jan-28 22:17 0.342686 AU
51265164 km
6.90 km/s
2054-Sep-05 07:42 0.021495 AU
3215662 km
6.36 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
0.51068
Condition
7
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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