SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 RF1

2023 RF1

2023 RF1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.036 AU it takes 1.05 yr to circle the Sun.

Apollo Observations: 224
Orbital Period · P
1.05 yr
v(q)
36 km/s
v(Q)
23.8 km/s
Diameter · ≈
0.02 km
TJ
5.9
Eccentricity · e
0.2036

Orbit and dynamics

The path is an ellipse reaching 0.825 AU from the Sun at perihelion and 1.247 AU at aphelion, a radial span of 0.422 AU.

Applying Kepler's third law to a = 1.036 AU gives an orbital period of 1.05 yr, or about 385 days.

An eccentricity of 0.204 makes the orbit moderately elongated.

Its inclination of 1.61° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36 km/s at perihelion and falls to 23.8 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 = 25.86 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 224 observations and has a weighted RMS residual of 0.3422 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
1.036 AU
Eccentricity
0.2036
Perihelion
0.825 AU
Aphelion
1.24693 AU
Inclination
1.61°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
293.77°

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
2039-Feb-07 13:38 0.456318 AU
68264200 km
20.46 km/s
2040-Feb-22 06:20 0.120907 AU
18087371 km
10.24 km/s
2041-Jan-21 10:51 0.186444 AU
27891553 km
4.80 km/s
2041-Apr-25 12:08 0.164906 AU
24669514 km
5.69 km/s
2041-Nov-29 23:42 0.261584 AU
39132361 km
6.39 km/s
2042-Jul-15 11:59 0.157365 AU
23541422 km
5.28 km/s
2042-Oct-05 21:42 0.173701 AU
25985317 km
4.44 km/s
2043-Sep-11 15:58 0.139095 AU
20808322 km
10.73 km/s
2044-Sep-25 02:30 0.467636 AU
69957285 km
20.58 km/s
2059-Feb-12 11:07 0.347036 AU
51915894 km
17.06 km/s
2060-Feb-27 10:07 0.010548 AU
1577997 km
6.90 km/s
2061-Jan-08 20:50 0.212396 AU
31774048 km
5.44 km/s
2061-May-10 14:04 0.184312 AU
27572690 km
6.32 km/s
2061-Nov-27 13:20 0.253852 AU
37975772 km
6.27 km/s
2062-Jul-16 03:33 0.161440 AU
24151074 km
5.39 km/s
2062-Oct-10 19:36 0.175988 AU
26327380 km
4.60 km/s
2063-Sep-11 12:42 0.077021 AU
11522244 km
8.97 km/s
2064-Sep-23 01:18 0.360540 AU
53935958 km
17.48 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
25.86

Orbit Quality

RMS
0.34219
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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