SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 JY2

2019 JY2

2019 JY2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.089 AU it takes 1.14 yr to circle the Sun.

Apollo Observations: 44
Orbital Period · P
1.14 yr
v(q)
37.8 km/s
v(Q)
21.6 km/s
Diameter · ≈
0 km
TJ
5.66
Eccentricity · e
0.2725

Orbit and dynamics

Between its closest point (0.792 AU) and its farthest (1.386 AU), the heliocentric distance changes by 0.594 AU over every revolution.

One full revolution takes 1.14 yr (415 days), computed from the semi-major axis of 1.089 AU.

An eccentricity of 0.273 makes the orbit moderately elongated.

Its inclination of 0.98° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 37.8 km/s at perihelion and falls to 21.6 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 = 29.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0 km.

Observation record and orbit quality

Astrometry from 44 individual observations underpins this orbit; the fit leaves an RMS residual of 0.467 arcseconds.

Condition code U = 5 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
1.089 AU
Eccentricity
0.2725
Perihelion
0.792 AU
Aphelion
1.385752 AU
Inclination
0.98°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
146.45°

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
2027-Feb-26 12:16 0.185197 AU
27705022 km
7.15 km/s
2027-Jun-10 20:38 0.247800 AU
37070339 km
5.44 km/s
2034-Oct-28 15:40 0.177419 AU
26541489 km
3.82 km/s
2034-Dec-25 05:37 0.151573 AU
22675068 km
6.03 km/s
2035-Jul-15 20:45 0.347354 AU
51963394 km
7.34 km/s
2036-May-20 08:52 0.289493 AU
43307564 km
16.47 km/s
2042-Nov-05 20:02 0.084001 AU
12566418 km
10.54 km/s
2043-Aug-12 01:55 0.370810 AU
55472367 km
7.78 km/s
2044-May-06 09:13 0.010488 AU
1568947 km
8.30 km/s
2050-Oct-30 16:22 0.166924 AU
24971515 km
14.90 km/s
2051-Aug-24 19:07 0.353041 AU
52814198 km
7.66 km/s
2058-Oct-24 10:48 0.242156 AU
36226017 km
18.80 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
29.6

Orbit Quality

RMS
0.46703
Condition
5
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.