SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 OO1

2017 OO1

2017 OO1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.894 AU and a period of 0.85 yr.

Aten Observations: 101
Orbital Period · P
0.85 yr
v(q)
36.2 km/s
v(Q)
27.4 km/s
Diameter · ≈
0.04 km
TJ
6.59
Eccentricity · e
0.1376

Orbit and dynamics

The path is an ellipse reaching 0.771 AU from the Sun at perihelion and 1.018 AU at aphelion, a radial span of 0.247 AU.

Applying Kepler's third law to a = 0.894 AU gives an orbital period of 0.85 yr, or about 309 days.

An eccentricity of 0.138 makes the orbit moderately elongated.

A steep inclination of 20.03° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 36.2 km/s at perihelion and falls to 27.4 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 = 24.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 101 observations and has a weighted RMS residual of 0.2183 arcseconds.

Condition code U = 4 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
0.8945 AU
Eccentricity
0.1376
Perihelion
0.771 AU
Aphelion
1.017583 AU
Inclination
20.03°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
353.12°

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-Jul-20 22:34 0.021512 AU
3218144 km
10.05 km/s
2028-Nov-11 19:24 0.345810 AU
51732505 km
9.85 km/s
2033-Jul-23 10:10 0.359048 AU
53712805 km
15.59 km/s
2034-Jan-14 12:19 0.214159 AU
32037781 km
12.96 km/s
2039-Mar-12 19:10 0.328307 AU
49114099 km
11.28 km/s
2039-Jul-22 05:58 0.147032 AU
21995732 km
10.85 km/s
2044-Jul-21 14:12 0.227969 AU
34103674 km
12.79 km/s
2044-Dec-28 10:40 0.236148 AU
35327303 km
12.85 km/s
2050-Feb-17 13:16 0.268708 AU
40198150 km
12.65 km/s
2050-Jul-22 08:07 0.279783 AU
41854987 km
13.08 km/s
2055-Jul-21 14:34 0.078034 AU
11673761 km
10.57 km/s
2055-Dec-07 14:30 0.293014 AU
43834344 km
12.27 km/s
2060-Jul-25 12:05 0.464739 AU
69524012 km
18.45 km/s
2061-Jan-29 06:09 0.223708 AU
33466186 km
12.94 km/s
2061-Jul-21 14:16 0.415227 AU
62117122 km
16.17 km/s
2066-Jul-21 12:27 0.031584 AU
4724926 km
10.06 km/s
2071-Jul-23 09:30 0.317671 AU
47522956 km
14.62 km/s
2072-Jan-09 09:49 0.218541 AU
32693338 km
12.96 km/s
2077-Feb-27 20:33 0.297744 AU
44541824 km
12.22 km/s
2077-Jul-22 02:28 0.213084 AU
31876943 km
11.86 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
24.5

Orbit Quality

RMS
0.21834
Condition
4
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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