SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 TC

2023 TC

2023 TC belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.183 AU it takes 1.29 yr to circle the Sun.

Apollo Observations: 109
Orbital Period · P
1.29 yr
v(q)
33 km/s
v(Q)
22.7 km/s
Diameter · ≈
0.02 km
TJ
5.32
Eccentricity · e
0.1843

Orbit and dynamics

Between its closest point (0.965 AU) and its farthest (1.401 AU), the heliocentric distance changes by 0.436 AU over every revolution.

One full revolution takes 1.29 yr (470 days), computed from the semi-major axis of 1.183 AU.

An eccentricity of 0.184 makes the orbit moderately elongated.

The orbital plane is tilted 12.02° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33 km/s at perihelion and falls to 22.7 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 = 26.49 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 109 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3227 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
1.183 AU
Eccentricity
0.1843
Perihelion
0.965 AU
Aphelion
1.401027 AU
Inclination
12.02°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
359.67°

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-May-06 19:32 0.422158 AU
63153881 km
8.10 km/s
2032-Oct-12 15:58 0.079124 AU
11836749 km
6.75 km/s
2033-Jan-27 23:06 0.220840 AU
33037130 km
5.18 km/s
2037-Apr-27 19:06 0.410447 AU
61402041 km
8.30 km/s
2041-Nov-09 22:42 0.207650 AU
31064044 km
7.75 km/s
2046-Apr-15 13:11 0.385466 AU
57664957 km
8.38 km/s
2050-Jul-18 12:08 0.377528 AU
56477392 km
4.49 km/s
2051-Jan-08 14:00 0.332933 AU
49806049 km
11.39 km/s
2054-Sep-05 07:06 0.437562 AU
65458315 km
17.47 km/s
2055-Apr-01 21:13 0.348314 AU
52107086 km
8.21 km/s
2059-Jun-18 02:04 0.420864 AU
62960375 km
6.17 km/s
2060-Jan-21 03:11 0.478942 AU
71648629 km
16.68 km/s
2063-Sep-15 05:27 0.270296 AU
40435676 km
13.03 km/s
2064-Mar-16 23:39 0.302803 AU
45298714 km
7.73 km/s
2068-May-29 03:43 0.433916 AU
64912975 km
7.28 km/s
2072-Sep-24 20:11 0.111327 AU
16654270 km
9.25 km/s
2073-Mar-01 00:59 0.258137 AU
38616812 km
6.97 km/s
2077-May-16 04:08 0.430837 AU
64452243 km
7.84 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
26.49

Orbit Quality

RMS
0.32271
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.

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