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Asteroid Near-Earth

2016 TH10

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(2016 TH10)

Where is it now

Distance from Sun
1.104 AU
True anomaly
197.94°
Distance from Earth
0.268 AU
As of
16 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 2016 TH10 — 1.104 AU from the Sun 2016 TH10
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2016 TH10 is 0.268 AU from Earth today (2.2 light-minutes).

In the sky

Right ascension
20h 49m 06s
Declination
-17° 32′ 26″
Constellation
Capricornus
Distance from Earth
0.27 AU
Elongation from the Sun
106.27° — 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
0.766 AU
Eccentricity
0.516
Inclination
1.39°
Orbital period
244.8 days
Perihelion
0.371 AU
Aphelion
1.161 AU
Longitude of ascending node
7.68°
Argument of periapsis
164.28°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 2.7 LD
0.0069 AU
Tisserand (Jupiter)
7.451

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
100
Data arc
7.98 years
First observed
4 October 2016
Last observed
27 September 2024
Residual RMS
0.5 ″
Solution · Otto Matic
27 September 2024

Visual & observation

Absolute magnitude (H)
24.82

Discovery & classification

Aten Near-Earth Object

Close approaches 357 on record

Flyby geometry
Ecliptic flyby of 2016 TH10 at 2028-09-07 05:09 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-09-07 05:09 UTC close approach of 2016 TH10. Catalogue miss distance 58.3 LD · 2.24 × 10⁷ km. The curve is the geocentric path from 2028-09-04 to 2028-09-10, 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. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 58.3 LD · 2.24 × 10⁷ km 2028-09-07 05:09 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-09-07 05:09 UTC close approach of 2016 TH10. Catalogue miss distance 58.3 LD · 2.24 × 10⁷ km. The curve is the geocentric path from 2028-09-04 to 2028-09-10, 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. 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
2028-06-24 18:30:00 Venus 0.0052 AU 2.0 LD 18.8 km/s
2028-09-07 05:09:00 Earth 0.1498 AU 58.3 LD 10.4 km/s
2028-12-15 12:44:00 Earth 0.4359 AU 169.7 LD 8.9 km/s
2030-08-31 03:16:00 Earth 0.1333 AU 51.9 LD 10.4 km/s
2030-12-26 09:34:00 Earth 0.4683 AU 182.3 LD 12.7 km/s
2031-09-29 10:45:00 Mercury 0.0391 AU 15.2 LD 14.8 km/s
2031-09-29 10:45:00 Merc 0.0391 AU 15.2 LD 14.8 km/s
2032-08-23 16:57:00 Earth 0.1068 AU 41.6 LD 10.6 km/s
2033-01-02 12:51:00 Earth 0.4943 AU 192.4 LD 15.3 km/s
2033-08-18 17:13:00 Venus 0.0996 AU 38.8 LD 14.3 km/s

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

Sources