SpaceAtlas Space Object Data
NASA JPL SBDB · 1997 CD17

1997 CD17

1997 CD17 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.122 AU it takes 1.19 yr to circle the Sun.

Apollo Observations: 22
Orbital Period · P
1.19 yr
v(q)
32.4 km/s
v(Q)
24.4 km/s
Diameter · ≈
0.01 km
TJ
5.53
Eccentricity · e
0.1414

Orbit and dynamics

Between its closest point (0.964 AU) and its farthest (1.281 AU), the heliocentric distance changes by 0.317 AU over every revolution.

One full revolution takes 1.19 yr (434 days), computed from the semi-major axis of 1.122 AU.

An eccentricity of 0.141 makes the orbit moderately elongated.

The orbital plane is tilted 15.1° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.4 km/s at perihelion and falls to 24.4 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 = 27.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 22 individual observations underpins this orbit; the fit leaves an RMS residual of 1.0083 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
1.122 AU
Eccentricity
0.1414
Perihelion
0.964 AU
Aphelion
1.280651 AU
Inclination
15.1°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
204.22°

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-Jan-19 03:46 0.383933 AU
57435541 km
18.86 km/s
2028-Sep-08 04:03 0.301605 AU
45119488 km
8.18 km/s
2035-Jul-02 13:16 0.279433 AU
41802562 km
11.96 km/s
2041-Feb-12 18:30 0.029501 AU
4413293 km
8.31 km/s
2041-Jul-21 13:51 0.191986 AU
28720760 km
8.32 km/s
2047-Jan-29 08:53 0.237445 AU
35521259 km
13.07 km/s
2047-Aug-16 21:56 0.247502 AU
37025703 km
8.35 km/s
2053-Sep-16 05:08 0.326881 AU
48900715 km
7.98 km/s
2060-Jul-01 22:00 0.236106 AU
35320994 km
11.56 km/s
2072-Feb-01 04:12 0.050402 AU
7539987 km
11.85 km/s
2078-Jan-19 02:26 0.308693 AU
46179861 km
18.67 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
27.5

Orbit Quality

RMS
1.0083
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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