Skip to content
Public Universe
Asteroid Near-Earth

2008 TD

Add to an observing list or journal →

(2008 TD)

Where is it now

Distance from Sun
0.593 AU
True anomaly
354.93°
Distance from Earth
1.321 AU
As of
20 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Sun Earth — 0.996 AU from the Sun Earth 2008 TD — 0.593 AU from the Sun 2008 TD
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2008 TD is 1.321 AU from Earth today (11.0 light-minutes).

In the sky

Right ascension
12h 14m 30s
Declination
-00° 01′ 18″
Constellation
Virgo
Distance from Earth
1.33 AU
Elongation from the Sun
24.67° — near the Sun — look low at dusk or dawn

Visible from both hemispheres.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
0.896 AU
Eccentricity
0.3386
Inclination
5.08°
Orbital period
309.8 days
Perihelion
0.593 AU
Aphelion
1.199 AU
Longitude of ascending node
357.59°
Argument of periapsis
144.65°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 9.8 LD
0.0252 AU
Tisserand (Jupiter)
6.585

Orbit quality

Orbit poorly determined (uncertainty code 7).

Observations used
23
Data arc
8 days
First observed
1 October 2008
Last observed
9 October 2008
Residual RMS
0.58 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
25.4

Discovery & classification

Aten Near-Earth Object

Close approaches 62 on record

Flyby geometry
Ecliptic flyby of 2008 TD at 2035-06-29 22:06 UTC Top-down view of the ecliptic, Earth at the centre, for the 2035-06-29 22:06 UTC close approach of 2008 TD. Catalogue miss distance 91.1 LD · 3.5 × 10⁷ km. The curve is the geocentric path from 2035-06-26 to 2035-07-02, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 91.1 LD · 3.5 × 10⁷ km 2035-06-29 22:06 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2035-06-29 22:06 UTC close approach of 2008 TD. Catalogue miss distance 91.1 LD · 3.5 × 10⁷ km. The curve is the geocentric path from 2035-06-26 to 2035-07-02, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2027-09-30 05:53:00 Venus 0.0794 AU 30.9 LD 12.8 km/s
2035-06-29 22:06:00 Earth 0.2341 AU 91.1 LD 15.7 km/s
2036-10-06 11:27:00 Earth 0.0301 AU 11.7 LD 8.9 km/s
2069-06-24 14:54:00 Earth 0.0947 AU 36.8 LD 8.2 km/s
2070-10-02 00:08:00 Earth 0.2334 AU 90.8 LD 16.4 km/s
2080-06-28 08:30:00 Earth 0.2148 AU 83.6 LD 15.1 km/s
2081-02-16 14:59:00 Venus 0.1248 AU 48.6 LD 10.2 km/s
2081-02-26 14:18:00 Earth 0.3916 AU 152.4 LD 14.6 km/s
2081-10-07 01:26:00 Earth 0.0265 AU 10.3 LD 9.3 km/s
2087-09-28 05:15:00 Earth 0.3343 AU 130.1 LD 19.5 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources