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Asteroid Near-Earth

2021 CL7

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(2021 CL7)

Where is it now

Distance from Sun
0.845 AU
True anomaly
84.79°
Distance from Earth
0.804 AU
As of
20 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 2021 CL7 — 0.845 AU from the Sun 2021 CL7
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2021 CL7 is 0.804 AU from Earth today (6.7 light-minutes).

In the sky

Right ascension
10h 31m 37s
Declination
+16° 58′ 49″
Constellation
Leo
Distance from Earth
0.81 AU
Elongation from the Sun
54.85° — near the Sun — look low at dusk or dawn

Favours the northern hemisphere; low or below the horizon from far south.

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
0.889 AU
Eccentricity
0.1823
Inclination
7.32°
Orbital period
306 days
Perihelion
0.727 AU
Aphelion
1.051 AU
Longitude of ascending node
327.34°
Argument of periapsis
25.73°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 12.2 LD
0.0313 AU
Tisserand (Jupiter)
6.661

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
55
Data arc
22 days
First observed
11 February 2021
Last observed
5 March 2021
Residual RMS
0.42 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
25.67

Discovery & classification

Aten Near-Earth Object

Close approaches 110 on record

Flyby geometry
Ecliptic flyby of 2021 CL7 at 2031-02-01 04:46 UTC Top-down view of the ecliptic, Earth at the centre, for the 2031-02-01 04:46 UTC close approach of 2021 CL7. Catalogue miss distance 94.8 LD · 3.65 × 10⁷ km. The curve is the geocentric path from 2031-01-29 to 2031-02-04, 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 94.8 LD · 3.65 × 10⁷ km 2031-02-01 04:46 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2031-02-01 04:46 UTC close approach of 2021 CL7. Catalogue miss distance 94.8 LD · 3.65 × 10⁷ km. The curve is the geocentric path from 2031-01-29 to 2031-02-04, 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
2031-02-01 04:46:00 Earth 0.2437 AU 94.8 LD 12.4 km/s
2031-08-17 02:50:00 Venus 0.0904 AU 35.2 LD 5.9 km/s
2031-08-17 12:28:00 Earth 0.2716 AU 105.7 LD 8.9 km/s
2036-02-07 07:37:00 Earth 0.4227 AU 164.5 LD 18 km/s
2036-09-14 11:37:00 Earth 0.2825 AU 109.9 LD 9.2 km/s
2037-04-15 10:22:00 Earth 0.3493 AU 135.9 LD 14.8 km/s
2040-11-02 10:26:00 Venus 0.0521 AU 20.3 LD 6.1 km/s
2041-10-15 05:14:00 Earth 0.2721 AU 105.9 LD 8 km/s
2042-04-19 19:41:00 Earth 0.1841 AU 71.6 LD 9 km/s
2047-03-19 00:12:00 Earth 0.0919 AU 35.8 LD 5.1 km/s

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

Sources