SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 DL1

2019 DL1

2019 DL1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.875 AU and a period of 0.82 yr.

Aten Observations: 49
Orbital Period · P
0.82 yr
v(q)
37.5 km/s
v(Q)
27 km/s
Diameter · ≈
0.02 km
TJ
6.75
Eccentricity · e
0.1629

Orbit and dynamics

Between its closest point (0.733 AU) and its farthest (1.018 AU), the heliocentric distance changes by 0.285 AU over every revolution.

One full revolution takes 0.82 yr (299 days), computed from the semi-major axis of 0.875 AU.

An eccentricity of 0.163 makes the orbit moderately elongated.

The orbital plane is tilted 6.51° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37.5 km/s at perihelion and falls to 27 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 = 26.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 49 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3911 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
0.875 AU
Eccentricity
0.1629
Perihelion
0.733 AU
Aphelion
1.017537 AU
Inclination
6.51°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
127.98°

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
2028-Mar-09 11:49 0.024721 AU
3698255 km
4.42 km/s
2032-Sep-09 05:38 0.271436 AU
40606183 km
8.81 km/s
2033-Mar-31 12:47 0.406310 AU
60783037 km
17.89 km/s
2037-Feb-08 05:38 0.053229 AU
7962911 km
5.69 km/s
2041-Oct-22 21:06 0.246945 AU
36942402 km
7.21 km/s
2042-Apr-08 09:32 0.179880 AU
26909728 km
9.48 km/s
2046-Feb-08 11:39 0.357846 AU
53533044 km
16.19 km/s
2046-Aug-25 10:56 0.270083 AU
40403772 km
8.65 km/s
2056-Apr-07 19:26 0.062025 AU
9278759 km
7.86 km/s
2060-Feb-12 01:34 0.372035 AU
55655588 km
18.71 km/s
2061-Apr-02 06:01 0.335985 AU
50262595 km
17.78 km/s
2065-Feb-02 19:02 0.073332 AU
10970282 km
8.45 km/s
2074-Sep-17 13:36 0.270320 AU
40439284 km
8.75 km/s
2075-Apr-04 06:43 0.341966 AU
51157314 km
16.06 km/s
2079-Feb-03 23:27 0.163416 AU
24446748 km
8.66 km/s
2079-Jul-14 07:31 0.242095 AU
36216927 km
6.40 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
26.6

Orbit Quality

RMS
0.39112
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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