SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 NT2

2018 NT2

2018 NT2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.145 AU it takes 1.23 yr to circle the Sun.

Apollo Observations: 38
Orbital Period · P
1.23 yr
v(q)
34.2 km/s
v(Q)
22.6 km/s
Diameter · ≈
0.06 km
TJ
5.46
Eccentricity · e
0.2036

Orbit and dynamics

The path is an ellipse reaching 0.912 AU from the Sun at perihelion and 1.378 AU at aphelion, a radial span of 0.466 AU.

Applying Kepler's third law to a = 1.145 AU gives an orbital period of 1.23 yr, or about 448 days.

An eccentricity of 0.204 makes the orbit moderately elongated.

The orbital plane is tilted 7.51° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.2 km/s at perihelion and falls to 22.6 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 = 23.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

The current orbit solution is based on 38 observations and has a weighted RMS residual of 0.3511 arcseconds.

Condition code U = 3 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
1.145 AU
Eccentricity
0.2036
Perihelion
0.912 AU
Aphelion
1.378122 AU
Inclination
7.51°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
60.72°

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
2029-Jul-12 01:17 0.281054 AU
42045064 km
5.79 km/s
2030-Jan-19 10:10 0.057429 AU
8591318 km
7.70 km/s
2034-Aug-23 23:16 0.231898 AU
34691499 km
11.94 km/s
2035-Apr-06 17:51 0.359548 AU
53787629 km
6.20 km/s
2040-Jun-08 18:13 0.369841 AU
55327477 km
6.75 km/s
2041-Feb-01 21:15 0.334615 AU
50057758 km
15.58 km/s
2045-Aug-30 16:37 0.092117 AU
13780523 km
5.31 km/s
2046-Feb-23 12:31 0.249439 AU
37315578 km
4.63 km/s
2051-May-14 08:35 0.396308 AU
59286778 km
6.90 km/s
2056-Jul-23 18:57 0.242342 AU
36253785 km
5.32 km/s
2057-Jan-14 12:03 0.036354 AU
5438414 km
5.86 km/s
2061-Aug-17 13:31 0.365688 AU
54706122 km
15.88 km/s
2062-Apr-23 16:12 0.384951 AU
57587871 km
6.60 km/s
2067-Jul-03 16:16 0.308015 AU
46078425 km
6.10 km/s
2068-Jan-23 14:24 0.123943 AU
18541580 km
9.55 km/s
2072-Aug-24 05:14 0.213571 AU
31949829 km
11.38 km/s
2073-Apr-04 01:32 0.353023 AU
52811421 km
6.10 km/s
2078-Jun-12 06:08 0.362249 AU
54191713 km
6.68 km/s
2079-Feb-01 00:52 0.304297 AU
45522138 km
14.70 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
23.8

Orbit Quality

RMS
0.35109
Condition
3
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.

Keep exploring

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