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Asteroid Near-Earth

2013 TG135

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(2013 TG135)

Where is it now

Distance from Sun
1.057 AU
True anomaly
182°
Distance from Earth
0.281 AU
As of
15 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 — 0.997 AU from the Sun Earth 2013 TG135 — 1.057 AU from the Sun 2013 TG135
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2013 TG135 is 0.281 AU from Earth today (2.3 light-minutes).

In the sky

Right ascension
19h 54m 35s
Declination
-17° 19′ 54″
Constellation
Sagittarius
Distance from Earth
0.29 AU
Elongation from the Sun
94.11° — well clear of the Sun

Favours the southern hemisphere; low or below the horizon from far north.

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
0.706 AU
Eccentricity
0.4972
Inclination
9.53°
Orbital period
216.8 days
Perihelion
0.355 AU
Aphelion
1.057 AU
Longitude of ascending node
193.1°
Argument of periapsis
351.88°
Epoch · J2000
2456578.5
Orbit class · ATE
Aten
Earth MOID · 11.8 LD
0.0304 AU
Tisserand (Jupiter)
7.999

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
29
Data arc
2 days
First observed
12 October 2013
Last observed
14 October 2013
Residual RMS
0.45 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
25.2

Discovery & classification

Aten Near-Earth Object

Close approaches 36 on record

Flyby geometry
Ecliptic flyby of 2013 TG135 at 2035-10-20 20:02 UTC Top-down view of the ecliptic, Earth at the centre, for the 2035-10-20 20:02 UTC close approach of 2013 TG135. Catalogue miss distance 58.8 LD · 2.26 × 10⁷ km. The curve is the geocentric path from 2035-10-17 to 2035-10-23, 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 58.8 LD · 2.26 × 10⁷ km 2035-10-20 20:02 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2035-10-20 20:02 UTC close approach of 2013 TG135. Catalogue miss distance 58.8 LD · 2.26 × 10⁷ km. The curve is the geocentric path from 2035-10-17 to 2035-10-23, 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
2029-04-26 10:23:00 Venus 0.1467 AU 57.1 LD 13.9 km/s
2029-12-08 14:49:00 Venus 0.0817 AU 31.8 LD 19.2 km/s
2035-10-20 20:02:00 Earth 0.151 AU 58.8 LD 15.5 km/s

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

Sources