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Asteroid Near-Earth

2010 CT

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(2010 CT)

Where is it now

Distance from Sun
1.198 AU
True anomaly
208.22°
Distance from Earth
1.716 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 2010 CT — 1.198 AU from the Sun 2010 CT
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2010 CT is 1.716 AU from Earth today (14.3 light-minutes).

In the sky

Right ascension
10h 52m 04s
Declination
-03° 34′ 41″
Constellation
Leo
Distance from Earth
1.71 AU
Elongation from the Sun
43.02° — 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
0.888 AU
Eccentricity
0.6577
Inclination
19.76°
Orbital period
305.6 days
Perihelion
0.304 AU
Aphelion
1.472 AU
Longitude of ascending node
176°
Argument of periapsis
104.37°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 66.7 LD
0.1713 AU
Tisserand (Jupiter)
6.446

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
47
Data arc
13.9 years
First observed
8 February 2010
Last observed
3 January 2024
Residual RMS
0.45 ″
Solution · Otto Matic
4 January 2024

Visual & observation

Absolute magnitude (H)
20.25

Discovery & classification

Aten Near-Earth Object

Close approaches 265 on record

Flyby geometry
Ecliptic flyby of 2010 CT at 2028-10-13 06:11 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-10-13 06:11 UTC close approach of 2010 CT. Catalogue miss distance 175.1 LD · 6.73 × 10⁷ km. The curve is the geocentric path from 2028-10-10 to 2028-10-16, 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 175.1 LD · 6.73 × 10⁷ km 2028-10-13 06:11 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-10-13 06:11 UTC close approach of 2010 CT. Catalogue miss distance 175.1 LD · 6.73 × 10⁷ km. The curve is the geocentric path from 2028-10-10 to 2028-10-16, 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
2028-10-13 06:11:00 Earth 0.4499 AU 175.1 LD 15.7 km/s
2031-01-31 14:39:00 Earth 0.4154 AU 161.7 LD 35 km/s
2031-12-15 07:37:00 Venus 0.1354 AU 52.7 LD 32.9 km/s
2031-12-29 08:43:00 Mercury 0.091 AU 35.4 LD 32.9 km/s
2031-12-29 08:43:00 Merc 0.091 AU 35.4 LD 32.9 km/s
2033-09-01 08:37:00 Merc 0.0628 AU 24.4 LD 44.5 km/s
2033-09-01 08:37:00 Mercury 0.0628 AU 24.4 LD 44.5 km/s
2033-10-30 08:16:00 Earth 0.3692 AU 143.7 LD 16.3 km/s
2036-02-06 01:39:00 Earth 0.3189 AU 124.1 LD 31.4 km/s
2038-11-06 15:17:00 Earth 0.3085 AU 120.0 LD 19.2 km/s

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

Sources