SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 BF1

2019 BF1

2019 BF1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.333 AU it takes 1.54 yr to circle the Sun.

Apollo Observations: 74
Orbital Period · P
1.54 yr
v(q)
35.7 km/s
v(Q)
18.7 km/s
Diameter · ≈
0.12 km
TJ
4.85
Eccentricity · e
0.313

Orbit and dynamics

Between its closest point (0.916 AU) and its farthest (1.75 AU), the heliocentric distance changes by 0.834 AU over every revolution.

One full revolution takes 1.54 yr (562 days), computed from the semi-major axis of 1.333 AU.

An eccentricity of 0.313 makes the orbit moderately elongated.

The orbital plane is tilted 11.57° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.7 km/s at perihelion and falls to 18.7 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 = 22.43 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.12 km.

Observation record and orbit quality

Astrometry from 74 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4843 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
1.333 AU
Eccentricity
0.313
Perihelion
0.916 AU
Aphelion
1.750229 AU
Inclination
11.57°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
244.51°

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
2036-Jan-24 00:02 0.402228 AU
60172493 km
19.87 km/s
2039-Mar-07 14:19 0.079454 AU
11886125 km
8.35 km/s
2039-Jun-28 05:13 0.330010 AU
49368833 km
4.84 km/s
2042-Jun-20 04:58 0.333424 AU
49879448 km
15.04 km/s
2056-Jan-31 13:45 0.267886 AU
40075243 km
16.05 km/s
2059-Apr-13 02:35 0.172381 AU
25787756 km
8.10 km/s
2062-Jun-28 02:45 0.452790 AU
67736364 km
19.16 km/s
2076-Feb-10 04:40 0.126471 AU
18919729 km
12.21 km/s
2076-Jul-25 01:24 0.444008 AU
66422626 km
7.88 km/s
2079-May-31 01:34 0.209825 AU
31389359 km
8.44 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
22.43

Orbit Quality

RMS
0.48426
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.

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