SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 FN23

2019 FN23

2019 FN23 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.198 AU once every 1.31 yr.

Amor Observations: 41
Orbital Period · P
1.31 yr
v(q)
29.2 km/s
v(Q)
25.4 km/s
Diameter · ≈
0.04 km
TJ
5.3
Eccentricity · e
0.069

Orbit and dynamics

The path is an ellipse reaching 1.115 AU from the Sun at perihelion and 1.281 AU at aphelion, a radial span of 0.166 AU.

Applying Kepler's third law to a = 1.198 AU gives an orbital period of 1.31 yr, or about 479 days.

With e = 0.069, the orbit is close to circular.

Its inclination of 3.88° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 29.2 km/s at perihelion and falls to 25.4 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 = 24.53 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 41 observations and has a weighted RMS residual of 0.6331 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
1.198 AU
Eccentricity
0.069
Perihelion
1.115 AU
Aphelion
1.280662 AU
Inclination
3.88°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
130.57°

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-Oct-25 00:58 0.278685 AU
41690691 km
4.71 km/s
2031-Dec-17 01:03 0.297230 AU
44464961 km
4.76 km/s
2036-Feb-17 13:24 0.228289 AU
34151599 km
3.33 km/s
2040-May-22 11:35 0.116552 AU
17435869 km
1.52 km/s
2044-Sep-13 16:19 0.226327 AU
33857988 km
3.61 km/s
2048-Nov-10 23:26 0.292957 AU
43825813 km
4.90 km/s
2053-Jan-04 05:06 0.285430 AU
42699742 km
4.41 km/s
2057-Mar-16 20:22 0.181054 AU
27085328 km
2.70 km/s
2061-Jul-13 01:27 0.152031 AU
22743585 km
0.95 km/s
2065-Oct-05 21:07 0.256174 AU
38323098 km
4.29 km/s
2069-Nov-29 21:09 0.299497 AU
44804098 km
4.89 km/s
2074-Jan-26 14:23 0.260720 AU
39003144 km
3.91 km/s
2078-Apr-20 18:52 0.128240 AU
19184437 km
2.11 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
24.53

Orbit Quality

RMS
0.6331
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.