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Asteroid Near-Earth

2021 LJ6

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(2021 LJ6)

Where is it now

Distance from Sun
0.793 AU
True anomaly
257.94°
Distance from Earth
0.283 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 2021 LJ6 — 0.793 AU from the Sun 2021 LJ6
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2021 LJ6 is 0.283 AU from Earth today (2.4 light-minutes).

In the sky

Right ascension
12h 13m 31s
Declination
-41° 29′ 13″
Constellation
Centaurus
Distance from Earth
0.29 AU
Elongation from the Sun
36.92° — near the Sun — look low at dusk or dawn

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
0.961 AU
Eccentricity
0.5135
Inclination
16.56°
Orbital period
344.2 days
Perihelion
0.468 AU
Aphelion
1.455 AU
Longitude of ascending node
80.29°
Argument of periapsis
52.05°
Epoch · J2000
2459377.5
Orbit class · ATE
Aten
Earth MOID · 3.2 LD
0.0082 AU
Tisserand (Jupiter)
6.121

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
22
Data arc
4 days
First observed
10 June 2021
Last observed
14 June 2021
Residual RMS
0.45 ″
Solution · Otto Matic
13 August 2022

Visual & observation

Absolute magnitude (H)
25.95

Discovery & classification

Aten Near-Earth Object

Close approaches 22 on record

Flyby geometry
Ecliptic flyby of 2021 LJ6 at 2027-09-20 19:38 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-09-20 19:38 UTC close approach of 2021 LJ6. Catalogue miss distance 174.5 LD · 6.71 × 10⁷ km. The curve is the geocentric path from 2027-09-17 to 2027-09-23, 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 174.5 LD · 6.71 × 10⁷ km 2027-09-20 19:38 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-09-20 19:38 UTC close approach of 2021 LJ6. Catalogue miss distance 174.5 LD · 6.71 × 10⁷ km. The curve is the geocentric path from 2027-09-17 to 2027-09-23, 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
2026-10-10 02:24:00 Earth 0.262 AU 101.9 LD 17.3 km/s
2026-10-31 20:13:00 Venus 0.1106 AU 43.1 LD 21.3 km/s
2027-09-20 19:38:00 Earth 0.4484 AU 174.5 LD 27.2 km/s
2073-12-25 06:48:00 Earth 0.4746 AU 184.7 LD 21.6 km/s
2094-10-27 08:28:00 Venus 0.0932 AU 36.3 LD 18.9 km/s

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

Sources