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Asteroid Near-Earth

243298

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243298 (2008 EN82)

Where is it now

Distance from Sun
2.097 AU
True anomaly
251.41°
Distance from Earth
2.248 AU
As of
11 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth 243298 — 2.097 AU from the Sun 243298
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 243298 is 2.248 AU from Earth today (18.7 light-minutes).

In the sky

Right ascension
17h 46m 16s
Declination
-12° 15′ 19″
Constellation
Serpens
Distance from Earth
2.25 AU
Elongation from the Sun
67.98° — well clear of the Sun

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
2.499 AU
Eccentricity
0.5565
Inclination
12.02°
Orbital period
3.95 years
Perihelion
1.108 AU
Aphelion
3.89 AU
Longitude of ascending node
206.94°
Argument of periapsis
194.9°
Epoch · J2000
2461200.5
Orbit class · AMO
Amor
Earth MOID · 46.9 LD
0.1206 AU
Tisserand (Jupiter)
3.208

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
490
Data arc
26.41 years
First observed
6 March 2000
Last observed
4 August 2026
Residual RMS
0.46 ″
Solution · Otto Matic
5 August 2026

Visual & observation

Absolute magnitude (H)
15.66

Discovery & classification

Discovered by
LINEAR
Discovery date
8 March 2008
Discovery site
Socorro

Also known as 2008 EN82

Amor Near-Earth Object

Close approaches 2 on record

Flyby geometry
Ecliptic flyby of 243298 at 2050-10-29 14:30 UTC Top-down view of the ecliptic, Earth at the centre, for the 2050-10-29 14:30 UTC close approach of 243298. Catalogue miss distance 40.3 LD · 1.55 × 10⁷ km. The curve is the geocentric path from 2050-10-26 to 2050-11-01, 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 Moon’s position is approximate. The inset is a heliocentric view and is approximate. Sun 40.3 LD · 1.55 × 10⁷ km 2050-10-29 14:30 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2050-10-29 14:30 UTC close approach of 243298. Catalogue miss distance 40.3 LD · 1.55 × 10⁷ km. The curve is the geocentric path from 2050-10-26 to 2050-11-01, 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 Moon’s position is approximate. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2050-10-29 14:30:00 Earth 0.1035 AU 40.3 LD 8.9 km/s
2124-11-20 18:03:00 Earth 0.1892 AU 73.6 LD 11.4 km/s

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

Sources