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Asteroid Near-Earth Potentially hazardous

613726

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613726 (2007 EF)

Where is it now

Distance from Sun
1.073 AU
True anomaly
207.47°
Distance from Earth
1.984 AU
As of
17 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 613726 — 1.073 AU from the Sun 613726
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 613726 is 1.984 AU from Earth today (16.5 light-minutes).

In the sky

Right ascension
14h 37m 55s
Declination
-03° 45′ 21″
Constellation
Virgo
Distance from Earth
1.98 AU
Elongation from the Sun
17.07° — too close to the Sun to observe

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
0.82 AU
Eccentricity
0.4101
Inclination
21.73°
Orbital period
271.4 days
Perihelion
0.484 AU
Aphelion
1.157 AU
Longitude of ascending node
158.33°
Argument of periapsis
226.04°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 9.8 LD
0.0251 AU
Tisserand (Jupiter)
7.016

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
120
Data arc
15.16 years
First observed
9 March 2007
Last observed
7 May 2022
Residual RMS
0.47 ″
Solution · Otto Matic
24 September 2024

Physical properties

Mean radius
0.13 km

Visual & observation

Geometric albedo
0.072
Absolute magnitude (H)
21.34

Discovery & classification

Discovered by
Mt. Lemmon Survey
Discovery date
9 March 2007
Discovery site
Mount Lemmon

Also known as 2007 EF

Aten Near-Earth Object Potentially Hazardous Asteroid

Close approaches 158 on record

Flyby geometry
Ecliptic flyby of 613726 at 2027-03-17 23:00 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-03-17 23:00 UTC close approach of 613726. Catalogue miss distance 179.3 LD · 6.89 × 10⁷ km. The curve is the geocentric path from 2027-03-14 to 2027-03-20, 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 179.3 LD · 6.89 × 10⁷ km 2027-03-17 23:00 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-03-17 23:00 UTC close approach of 613726. Catalogue miss distance 179.3 LD · 6.89 × 10⁷ km. The curve is the geocentric path from 2027-03-14 to 2027-03-20, 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
2027-03-17 23:00:00 Earth 0.4607 AU 179.3 LD 27.8 km/s
2030-03-11 00:04:00 Earth 0.3001 AU 116.8 LD 22.9 km/s
2033-03-04 21:37:00 Earth 0.1381 AU 53.7 LD 18.3 km/s
2033-09-11 01:51:00 Earth 0.4918 AU 191.4 LD 22.7 km/s
2036-03-01 04:42:00 Earth 0.0357 AU 13.9 LD 14.5 km/s
2036-08-25 17:05:00 Earth 0.4617 AU 179.7 LD 21 km/s
2039-03-06 01:13:00 Earth 0.1853 AU 72.1 LD 12.2 km/s
2039-08-08 13:20:00 Earth 0.4286 AU 166.8 LD 18.6 km/s
2042-03-23 20:37:00 Earth 0.3082 AU 120.0 LD 12 km/s
2042-07-19 04:27:00 Earth 0.3975 AU 154.7 LD 15.9 km/s

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

Sources