SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 JT2

2017 JT2

2017 JT2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.162 AU it takes 1.25 yr to circle the Sun.

Apollo Observations: 74
Orbital Period · P
1.25 yr
v(q)
79.4 km/s
v(Q)
9.6 km/s
Diameter · ≈
0.61 km
TJ
4.91
Eccentricity · e
0.7839

Orbit and dynamics

Between its closest point (0.251 AU) and its farthest (2.073 AU), the heliocentric distance changes by 1.822 AU over every revolution.

One full revolution takes 1.25 yr (458 days), computed from the semi-major axis of 1.162 AU.

The high eccentricity (0.784) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 42.71° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 79.4 km/s at perihelion and falls to 9.6 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 = 18.84 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.61 km.

Observation record and orbit quality

Astrometry from 74 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3791 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.162 AU
Eccentricity
0.7839
Perihelion
0.251 AU
Aphelion
2.072892 AU
Inclination
42.71°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
160.69°

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-Apr-07 14:21 0.158088 AU
23649629 km
27.97 km/s
2032-Apr-08 06:23 0.114064 AU
17063691 km
28.99 km/s
2037-Apr-09 22:59 0.074137 AU
11090677 km
29.99 km/s
2042-Apr-11 14:37 0.040271 AU
6024474 km
30.94 km/s
2047-Apr-13 02:41 0.025853 AU
3867549 km
31.79 km/s
2052-Apr-13 19:25 0.046580 AU
6968280 km
32.76 km/s
2057-Apr-15 17:00 0.083258 AU
12455272 km
33.85 km/s
2062-Apr-17 21:15 0.126743 AU
18960534 km
35.11 km/s
2067-Apr-20 04:14 0.172575 AU
25816792 km
36.44 km/s
2072-Apr-21 15:50 0.221156 AU
33084538 km
37.87 km/s
2077-Apr-24 09:27 0.274199 AU
41019608 km
39.47 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
18.84

Orbit Quality

RMS
0.37909
Condition
0
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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