SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 KL2

2018 KL2

2018 KL2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.051 AU it takes 1.08 yr to circle the Sun.

Apollo Observations: 110
Orbital Period · P
1.08 yr
v(q)
46.5 km/s
v(Q)
18.2 km/s
Diameter · ≈
0.16 km
TJ
5.75
Eccentricity · e
0.4374

Orbit and dynamics

The path is an ellipse reaching 0.591 AU from the Sun at perihelion and 1.511 AU at aphelion, a radial span of 0.92 AU.

Applying Kepler's third law to a = 1.051 AU gives an orbital period of 1.08 yr, or about 394 days.

The high eccentricity (0.437) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.65° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 46.5 km/s at perihelion and falls to 18.2 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 = 21.7 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.16 km.

Observation record and orbit quality

The current orbit solution is based on 110 observations and has a weighted RMS residual of 0.4695 arcseconds.

Condition code U = 2 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
1.051 AU
Eccentricity
0.4374
Perihelion
0.591 AU
Aphelion
1.510707 AU
Inclination
8.65°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
67.8°

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
2031-Jun-13 11:06 0.253457 AU
37916609 km
19.97 km/s
2032-Jun-11 22:12 0.271579 AU
40627667 km
8.99 km/s
2033-May-02 12:11 0.475396 AU
71118195 km
11.58 km/s
2033-Oct-05 17:18 0.406889 AU
60869790 km
17.27 km/s
2034-Dec-01 04:34 0.344911 AU
51598012 km
13.53 km/s
2035-Feb-27 17:34 0.368572 AU
55137566 km
9.84 km/s
2036-Feb-05 00:21 0.174039 AU
26035877 km
16.29 km/s
2045-Jun-15 15:18 0.202928 AU
30357591 km
18.10 km/s
2046-Jun-04 23:18 0.315139 AU
47144161 km
9.40 km/s
2046-Aug-12 10:45 0.329966 AU
49362218 km
10.48 km/s
2047-Apr-28 19:26 0.488587 AU
73091532 km
11.76 km/s
2047-Oct-13 21:22 0.406911 AU
60872997 km
17.45 km/s
2048-Mar-29 18:02 0.493572 AU
73837275 km
11.79 km/s
2048-Dec-11 16:04 0.319008 AU
47722966 km
11.79 km/s
2049-Feb-19 16:35 0.329940 AU
49358347 km
9.17 km/s
2050-Feb-07 17:01 0.221143 AU
33082516 km
18.48 km/s
2059-Jun-19 02:45 0.154163 AU
23062470 km
15.90 km/s
2060-May-28 03:03 0.356992 AU
53405286 km
9.93 km/s
2060-Aug-24 21:25 0.358019 AU
53558816 km
12.62 km/s
2061-Apr-23 18:51 0.498880 AU
74631374 km
11.90 km/s
2061-Oct-21 17:51 0.403760 AU
60401605 km
17.40 km/s
2062-Mar-25 14:40 0.480683 AU
71909204 km
11.61 km/s
2062-Dec-27 01:52 0.283076 AU
42347634 km
9.41 km/s
2063-Feb-10 02:35 0.282336 AU
42236816 km
8.41 km/s
2064-Feb-11 11:13 0.278590 AU
41676492 km
20.68 km/s
2073-Jun-20 14:01 0.134144 AU
20067674 km
14.37 km/s
2074-May-24 00:57 0.382142 AU
57167589 km
10.28 km/s
2074-Sep-01 23:20 0.372441 AU
55716432 km
13.82 km/s
2075-Oct-27 17:25 0.400282 AU
59881328 km
17.24 km/s
2076-Mar-22 01:38 0.470223 AU
70344376 km
11.46 km/s
2077-Feb-01 15:43 0.247916 AU
37087713 km
8.16 km/s
2078-Feb-13 01:06 0.315930 AU
47262514 km
22.03 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
21.7

Orbit Quality

RMS
0.46948
Condition
2
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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