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Asteroid Near-Earth

2010 SF

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(2010 SF)

Where is it now

Distance from Sun
1.019 AU
True anomaly
171.13°
Distance from Earth
0.692 AU
As of
19 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 SF — 1.019 AU from the Sun 2010 SF
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2010 SF is 0.692 AU from Earth today (5.8 light-minutes).

In the sky

Right ascension
18h 36m 57s
Declination
-24° 13′ 55″
Constellation
Sagittarius
Distance from Earth
0.69 AU
Elongation from the Sun
71.78° — 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
0.839 AU
Eccentricity
0.2198
Inclination
9.35°
Orbital period
280.5 days
Perihelion
0.654 AU
Aphelion
1.023 AU
Longitude of ascending node
350.88°
Argument of periapsis
184.18°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 5.9 LD
0.0151 AU
Tisserand (Jupiter)
6.978

Orbit quality

Orbit poorly determined (uncertainty code 7).

Observations used
47
Data arc
9 days
First observed
16 September 2010
Last observed
25 September 2010
Residual RMS
0.42 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
25.4

Discovery & classification

Aten Near-Earth Object

Close approaches 38 on record

Flyby geometry
Ecliptic flyby of 2010 SF at 2030-10-12 15:20 UTC Top-down view of the ecliptic, Earth at the centre, for the 2030-10-12 15:20 UTC close approach of 2010 SF. Catalogue miss distance 91.3 LD · 3.51 × 10⁷ km. The curve is the geocentric path from 2030-10-09 to 2030-10-15, 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 north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 91.3 LD · 3.51 × 10⁷ km 2030-10-12 15:20 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2030-10-12 15:20 UTC close approach of 2010 SF. Catalogue miss distance 91.3 LD · 3.51 × 10⁷ km. The curve is the geocentric path from 2030-10-09 to 2030-10-15, 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 north 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
2030-10-12 15:20:00 Earth 0.2345 AU 91.3 LD 11.1 km/s
2033-08-29 20:09:00 Earth 0.1027 AU 40.0 LD 7.9 km/s
2040-10-10 11:43:00 Earth 0.3228 AU 125.6 LD 14 km/s
2056-08-30 00:11:00 Earth 0.3125 AU 121.6 LD 14.2 km/s
2057-02-05 22:49:00 Earth 0.3143 AU 122.3 LD 10.3 km/s
2063-10-11 09:47:00 Earth 0.1935 AU 75.3 LD 9.6 km/s
2086-10-11 21:50:00 Earth 0.2309 AU 89.9 LD 10.9 km/s
2088-08-02 22:31:00 Venus 0.0951 AU 37.0 LD 8.1 km/s
2089-08-31 12:45:00 Earth 0.0805 AU 31.3 LD 7.3 km/s
2115-09-03 00:19:00 Earth 0.3961 AU 154.2 LD 16.8 km/s

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

Sources