SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 XS

2017 XS

2017 XS is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.793 AU and a period of 0.71 yr.

Aten Observations: 246
Orbital Period · P
0.71 yr
v(q)
47.8 km/s
v(Q)
23.4 km/s
Diameter · ≈
0.1 km
TJ
7.27
Eccentricity · e
0.3418

Orbit and dynamics

The path is an ellipse reaching 0.522 AU from the Sun at perihelion and 1.064 AU at aphelion, a radial span of 0.542 AU.

Applying Kepler's third law to a = 0.793 AU gives an orbital period of 0.71 yr, or about 258 days.

An eccentricity of 0.342 makes the orbit moderately elongated.

The orbital plane is tilted 14.86° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 47.8 km/s at perihelion and falls to 23.4 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 = 22.7 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

The current orbit solution is based on 246 observations and has a weighted RMS residual of 0.4215 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
0.793 AU
Eccentricity
0.3418
Perihelion
0.522 AU
Aphelion
1.064047 AU
Inclination
14.86°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
140.43°

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-Aug-11 03:45 0.496640 AU
74296298 km
17.47 km/s
2028-Jan-29 18:21 0.402163 AU
60162790 km
19.44 km/s
2029-Dec-06 22:01 0.015610 AU
2335258 km
11.20 km/s
2030-Apr-24 05:45 0.395194 AU
59120144 km
13.01 km/s
2035-Jan-08 04:19 0.176416 AU
26391463 km
9.60 km/s
2036-Dec-14 06:32 0.415773 AU
62198698 km
23.35 km/s
2037-Jun-10 10:32 0.476225 AU
71242244 km
19.53 km/s
2039-Aug-23 15:10 0.481493 AU
72030354 km
15.34 km/s
2040-Feb-01 06:23 0.317669 AU
47522668 km
15.80 km/s
2041-Dec-06 07:29 0.126169 AU
18874612 km
14.26 km/s
2042-May-09 23:03 0.425779 AU
63695652 km
15.72 km/s
2046-Dec-20 14:01 0.111228 AU
16639493 km
9.44 km/s
2049-Jun-23 03:33 0.490471 AU
73373484 km
20.23 km/s
2051-Sep-09 09:35 0.452082 AU
67630542 km
11.95 km/s
2052-Jan-30 10:42 0.243729 AU
36461372 km
11.89 km/s
2053-Dec-09 00:48 0.252955 AU
37841504 km
18.03 km/s
2054-May-24 03:58 0.451149 AU
67490995 km
17.75 km/s
2057-Jan-27 11:01 0.455852 AU
68194551 km
21.45 km/s
2058-Dec-09 04:51 0.025152 AU
3762735 km
10.36 km/s
2059-Apr-17 15:32 0.383447 AU
57362808 km
11.71 km/s
2061-Jul-03 14:01 0.499637 AU
74744627 km
20.42 km/s
2063-Sep-26 08:47 0.417745 AU
62493809 km
8.16 km/s
2064-Jan-20 11:21 0.208321 AU
31164431 km
10.09 km/s
2065-Dec-11 14:27 0.337023 AU
50417891 km
20.57 km/s
2066-Jun-01 13:47 0.465468 AU
69633014 km
18.75 km/s
2068-Aug-11 04:11 0.496632 AU
74295124 km
17.36 km/s
2069-Jan-29 08:37 0.401339 AU
60039403 km
19.23 km/s
2070-Dec-07 01:04 0.023609 AU
3531879 km
11.38 km/s
2071-Apr-25 21:41 0.398250 AU
59577294 km
13.24 km/s
2076-Jan-06 21:18 0.174699 AU
26134628 km
9.56 km/s
2077-Dec-15 01:53 0.430643 AU
64423209 km
23.72 km/s
2078-Jun-12 00:29 0.477917 AU
71495311 km
19.61 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
22.7

Orbit Quality

RMS
0.42153
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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