SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 FS1

2023 FS1

2023 FS1 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.321 AU once every 1.52 yr.

Amor Observations: 39
Orbital Period · P
1.52 yr
v(q)
31.5 km/s
v(Q)
21.3 km/s
Diameter · ≈
0.03 km
TJ
4.92
Eccentricity · e
0.1935

Orbit and dynamics

The path is an ellipse reaching 1.066 AU from the Sun at perihelion and 1.577 AU at aphelion, a radial span of 0.511 AU.

Applying Kepler's third law to a = 1.321 AU gives an orbital period of 1.52 yr, or about 555 days.

An eccentricity of 0.194 makes the orbit moderately elongated.

The orbital plane is tilted 6.55° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.5 km/s at perihelion and falls to 21.3 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.18 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 39 observations and has a weighted RMS residual of 0.4662 arcseconds.

Condition code U = 6 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
1.321 AU
Eccentricity
0.1935
Perihelion
1.066 AU
Aphelion
1.576613 AU
Inclination
6.55°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
32.93°

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
2028-Dec-24 05:20 0.399789 AU
59807650 km
5.30 km/s
2031-Dec-03 03:36 0.473410 AU
70821063 km
6.96 km/s
2052-Aug-18 11:07 0.477786 AU
71475710 km
7.26 km/s
2055-Jul-30 04:40 0.406672 AU
60837227 km
5.82 km/s
2058-Mar-25 04:32 0.311496 AU
46599127 km
10.81 km/s
2058-Jun-30 18:25 0.304999 AU
45627237 km
3.27 km/s
2061-Mar-28 18:13 0.088438 AU
13230171 km
5.50 km/s
2064-Apr-01 22:30 0.074689 AU
11173365 km
4.35 km/s
2067-Jan-21 17:32 0.288637 AU
43179517 km
3.19 km/s
2069-Dec-20 03:03 0.406360 AU
60790663 km
5.69 km/s
2072-Nov-29 02:43 0.482129 AU
72125470 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
25.18

Orbit Quality

RMS
0.46619
Condition
6
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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