SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 CB2

2019 CB2

2019 CB2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.157 AU it takes 1.24 yr to circle the Sun.

Apollo Observations: 66
Orbital Period · P
1.24 yr
v(q)
42.3 km/s
v(Q)
18.1 km/s
Diameter · ≈
0.02 km
TJ
5.36
Eccentricity · e
0.4009

Orbit and dynamics

The path is an ellipse reaching 0.693 AU from the Sun at perihelion and 1.621 AU at aphelion, a radial span of 0.928 AU.

Applying Kepler's third law to a = 1.157 AU gives an orbital period of 1.24 yr, or about 455 days.

The high eccentricity (0.401) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.16° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 42.3 km/s at perihelion and falls to 18.1 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 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 66 observations and has a weighted RMS residual of 0.3833 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
1.157 AU
Eccentricity
0.4009
Perihelion
0.693 AU
Aphelion
1.620841 AU
Inclination
6.16°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
271.88°

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-Jan-28 03:26 0.244468 AU
36571911 km
21.16 km/s
2030-Aug-24 00:04 0.019195 AU
2871583 km
13.89 km/s
2034-Jan-23 09:00 0.362811 AU
54275805 km
24.74 km/s
2035-Aug-18 03:13 0.044833 AU
6706961 km
10.83 km/s
2040-Jul-31 22:27 0.178413 AU
26690161 km
7.99 km/s
2045-Jun-30 05:14 0.274641 AU
41085741 km
10.33 km/s
2045-Aug-30 18:17 0.326173 AU
48794761 km
6.42 km/s
2050-Jun-08 22:29 0.312136 AU
46694889 km
12.13 km/s
2050-Sep-19 23:06 0.412765 AU
61748719 km
8.48 km/s
2055-May-21 07:43 0.328397 AU
49127479 km
12.86 km/s
2055-Oct-02 00:27 0.476300 AU
71253506 km
9.61 km/s
2060-Jan-09 05:09 0.417072 AU
62393074 km
9.22 km/s
2060-May-01 03:10 0.318322 AU
47620298 km
12.52 km/s
2065-Jan-27 05:32 0.287590 AU
43022865 km
7.33 km/s
2065-Apr-05 14:46 0.259520 AU
38823628 km
10.52 km/s
2075-Feb-15 03:35 0.005488 AU
820999 km
10.42 km/s
2076-Sep-09 18:34 0.310566 AU
46460015 km
24.55 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
26.0

Orbit Quality

RMS
0.38326
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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