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Asteroid Near-Earth

2021 LD6

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(2021 LD6)

2021 LD6 is an asteroid in the Aten orbit class. Its orbit takes it from 0.89 AU to 1.09 AU from the Sun; one orbit takes 358.8 days. Orbit from the JPL solution of 24 November 2022.

Where is it now

Distance from Sun
0.936 AU
True anomaly
63.46°
Distance from Earth
0.855 AU
As of
2 November 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 — 0.992 AU from the Sun Earth 2021 LD6 — 0.936 AU from the Sun 2021 LD6
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2021 LD6 is 0.855 AU from Earth today (7.1 light-minutes).

In the sky

Right ascension
10h 48m 07s
Declination
+07° 30′ 29″
Constellation
Leo
Distance from Earth
0.86 AU
Elongation from the Sun
60.42° — 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
0.988 AU
Eccentricity
0.1
Inclination
0.77°
Orbital period
358.8 days
Perihelion
0.889 AU
Aphelion
1.087 AU
Longitude of ascending node
100.65°
Argument of periapsis
288.77°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 0.3 LD
0.0008 AU
Tisserand (Jupiter)
6.133

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
41
Data arc
37 days
First observed
2 June 2021
Last observed
9 July 2021
Residual RMS
0.45 ″
Solution · Otto Matic
24 November 2022

Visual & observation

Absolute magnitude (H)
27.2

Discovery & classification

Listed by JPL impact monitoring; see the Sentry table for current probabilities.

Aten Near-Earth Object

Close approaches 36 on record

Flyby geometry
Ecliptic flyby of 2021 LD6 at 2070-02-10 14:52 UTC Sun 173.6 LD · 6.67 × 10⁷ km 2070-02-10 14:52 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2070-02-10 14:52 UTC close approach of 2021 LD6. Catalogue miss distance 173.6 LD · 6.67 × 10⁷ km. The curve is the geocentric path from 2070-02-07 to 2070-02-13, 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
2070-02-10 14:52:00 Earth 0.4462 AU 173.6 LD 16.4 km/s
2071-02-05 22:28:00 Earth 0.3362 AU 130.8 LD 13.1 km/s
2072-02-01 08:21:00 Earth 0.2264 AU 88.1 LD 9.7 km/s
2073-01-26 20:05:00 Earth 0.1183 AU 46.0 LD 6.4 km/s
2074-01-23 02:15:00 Earth 0.0168 AU 6.5 LD 3.4 km/s
2075-01-22 01:37:00 Earth 0.0158 AU 6.1 LD 2.5 km/s
2075-11-29 00:47:00 Earth 0.084 AU 32.7 LD 2.5 km/s
2076-03-09 23:59:00 Earth 0.076 AU 29.6 LD 2.4 km/s
2076-10-19 18:00:00 Earth 0.1046 AU 40.7 LD 3.2 km/s
2077-04-18 20:45:00 Earth 0.0858 AU 33.4 LD 2.6 km/s

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

Sources