Skip to content
Public Universe
Asteroid Near-Earth

666220

Add to an observing list or journal →

666220 (2010 AO60)

Where is it now

Distance from Sun
1.133 AU
True anomaly
148.47°
Distance from Earth
1.704 AU
As of
22 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 — 0.995 AU from the Sun Earth 666220 — 1.133 AU from the Sun 666220
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 666220 is 1.704 AU from Earth today (14.2 light-minutes).

In the sky

Right ascension
11h 22m 11s
Declination
+03° 13′ 19″
Constellation
Leo
Distance from Earth
1.7 AU
Elongation from the Sun
39.75° — 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
0.952 AU
Eccentricity
0.2485
Inclination
11.06°
Orbital period
339 days
Perihelion
0.715 AU
Aphelion
1.188 AU
Longitude of ascending node
309.88°
Argument of periapsis
37.34°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 31.7 LD
0.0814 AU
Tisserand (Jupiter)
6.281

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
264
Data arc
14.17 years
First observed
15 January 2010
Last observed
17 March 2024
Residual RMS
0.51 ″
Solution · Otto Matic
14 December 2024

Visual & observation

Absolute magnitude (H)
21.73

Discovery & classification

Discovered by
CSS
Discovery date
15 January 2010
Discovery site
Catalina

Also known as 2010 AO60

Aten Near-Earth Object

Close approaches 63 on record

Flyby geometry
Ecliptic flyby of 666220 at 2036-01-28 03:29 UTC Top-down view of the ecliptic, Earth at the centre, for the 2036-01-28 03:29 UTC close approach of 666220. Catalogue miss distance 58.0 LD · 2.23 × 10⁷ km. The curve is the geocentric path from 2036-01-25 to 2036-01-31, 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 58.0 LD · 2.23 × 10⁷ km 2036-01-28 03:29 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2036-01-28 03:29 UTC close approach of 666220. Catalogue miss distance 58.0 LD · 2.23 × 10⁷ km. The curve is the geocentric path from 2036-01-25 to 2036-01-31, 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
2036-01-28 03:29:00 Earth 0.149 AU 58.0 LD 7.7 km/s
2049-01-26 21:35:00 Earth 0.1471 AU 57.2 LD 7.7 km/s
2062-01-29 01:22:00 Earth 0.1536 AU 59.8 LD 7.7 km/s
2067-04-03 06:47:00 Venus 0.1062 AU 41.3 LD 13.4 km/s
2069-02-08 09:12:00 Venus 0.0469 AU 18.2 LD 11.2 km/s
2070-12-17 06:13:00 Venus 0.0397 AU 15.4 LD 9.7 km/s
2072-10-25 04:11:00 Venus 0.089 AU 34.6 LD 8.7 km/s
2074-01-09 20:32:00 Earth 0.1821 AU 70.9 LD 13.2 km/s
2075-02-13 13:24:00 Earth 0.199 AU 77.4 LD 7.8 km/s
2076-05-26 11:49:00 Earth 0.184 AU 71.6 LD 8.2 km/s

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

Sources