SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 YL

2019 YL

2019 YL belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.318 AU it takes 1.51 yr to circle the Sun.

Apollo Observations: 65
Orbital Period · P
1.51 yr
v(q)
34.6 km/s
v(Q)
19.5 km/s
Diameter · ≈
0.03 km
TJ
4.91
Eccentricity · e
0.2791

Orbit and dynamics

Between its closest point (0.95 AU) and its farthest (1.686 AU), the heliocentric distance changes by 0.736 AU over every revolution.

One full revolution takes 1.51 yr (553 days), computed from the semi-major axis of 1.318 AU.

An eccentricity of 0.279 makes the orbit moderately elongated.

Its inclination of 1.43° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.6 km/s at perihelion and falls to 19.5 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 = 25.55 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 65 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5577 arcseconds.

Condition code U = 0 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
1.318 AU
Eccentricity
0.2791
Perihelion
0.95 AU
Aphelion
1.685854 AU
Inclination
1.43°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
121.75°

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-19 12:17 0.494522 AU
73979364 km
20.42 km/s
2063-Aug-27 11:53 0.427388 AU
63936265 km
18.13 km/s
2064-Mar-07 12:43 0.485448 AU
72621963 km
7.35 km/s
2066-Sep-05 17:17 0.256485 AU
38369558 km
13.12 km/s
2067-Feb-21 04:27 0.407391 AU
60944880 km
5.94 km/s
2069-Sep-17 04:01 0.096335 AU
14411505 km
8.23 km/s
2070-Jan-30 03:22 0.308263 AU
46115492 km
3.52 km/s
2072-Oct-15 16:01 0.036892 AU
5518960 km
4.61 km/s
2075-Dec-18 06:02 0.018297 AU
2737149 km
5.86 km/s
2078-Jul-23 15:55 0.423827 AU
63403636 km
5.87 km/s
2079-Jan-10 03:45 0.292600 AU
43772388 km
14.38 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
25.55

Orbit Quality

RMS
0.55766
Condition
0
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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