SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 TL23

2007 TL23

2007 TL23 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.134 AU it takes 1.21 yr to circle the Sun.

Apollo Observations: 105
Orbital Period · P
1.21 yr
v(q)
71.8 km/s
v(Q)
10.9 km/s
Diameter · ≈
0.18 km
TJ
5.22
Eccentricity · e
0.7365

Orbit and dynamics

The path is an ellipse reaching 0.299 AU from the Sun at perihelion and 1.969 AU at aphelion, a radial span of 1.67 AU.

Applying Kepler's third law to a = 1.134 AU gives an orbital period of 1.21 yr, or about 441 days.

The high eccentricity (0.737) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 2.13° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 71.8 km/s at perihelion and falls to 10.9 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 = 21.48 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.18 km.

Observation record and orbit quality

The current orbit solution is based on 105 observations and has a weighted RMS residual of 0.5053 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
1.134 AU
Eccentricity
0.7365
Perihelion
0.299 AU
Aphelion
1.969191 AU
Inclination
2.13°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
206.17°

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-Jan-11 21:34 0.056844 AU
8503679 km
23.29 km/s
2030-Sep-26 14:36 0.258736 AU
38706296 km
18.02 km/s
2034-Jan-15 02:48 0.319875 AU
47852558 km
16.76 km/s
2036-Oct-02 18:17 0.030082 AU
4500266 km
25.15 km/s
2042-Oct-14 01:52 0.269312 AU
40288537 km
33.39 km/s
2044-Dec-24 15:02 0.379061 AU
56706679 km
37.11 km/s
2051-Jan-05 10:50 0.119708 AU
17908067 km
28.60 km/s
2053-Sep-30 00:29 0.420924 AU
62969359 km
15.78 km/s
2057-Jan-13 23:36 0.146587 AU
21929063 km
20.67 km/s
2059-Sep-28 07:50 0.171352 AU
25633843 km
20.17 km/s
2063-Jan-12 20:43 0.404004 AU
60438212 km
15.92 km/s
2065-Oct-06 15:49 0.099292 AU
14853821 km
27.89 km/s
2071-Oct-18 16:37 0.360394 AU
53914230 km
36.42 km/s
2073-Dec-29 07:02 0.286389 AU
42843193 km
34.01 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
21.48

Orbit Quality

RMS
0.50534
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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