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Asteroid Near-Earth

2015 CL

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(2015 CL)

Where is it now

Distance from Sun
1.072 AU
True anomaly
161.26°
Distance from Earth
1.172 AU
As of
16 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 — 0.997 AU from the Sun Earth 2015 CL — 1.072 AU from the Sun 2015 CL
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 CL is 1.172 AU from Earth today (9.8 light-minutes).

In the sky

Right ascension
09h 51m 09s
Declination
+15° 08′ 47″
Constellation
Leo
Distance from Earth
1.17 AU
Elongation from the Sun
58.59° — 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
0.733 AU
Eccentricity
0.5645
Inclination
2.97°
Orbital period
229 days
Perihelion
0.319 AU
Aphelion
1.146 AU
Longitude of ascending node
319.91°
Argument of periapsis
331.06°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 0.0 LD
0 AU
Tisserand (Jupiter)
7.722

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
74
Data arc
10.01 years
First observed
29 January 2015
Last observed
2 February 2025
Residual RMS
0.42 ″
Solution · Otto Matic
12 February 2025

Visual & observation

Absolute magnitude (H)
25.52

Discovery & classification

Aten Near-Earth Object

Close approaches 302 on record

Flyby geometry
Ecliptic flyby of 2015 CL at 2030-01-20 06:16 UTC Top-down view of the ecliptic, Earth at the centre, for the 2030-01-20 06:16 UTC close approach of 2015 CL. Catalogue miss distance 60.5 LD · 2.33 × 10⁷ km. The curve is the geocentric path from 2030-01-17 to 2030-01-23, 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. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 60.5 LD · 2.33 × 10⁷ km 2030-01-20 06:16 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2030-01-20 06:16 UTC close approach of 2015 CL. Catalogue miss distance 60.5 LD · 2.33 × 10⁷ km. The curve is the geocentric path from 2030-01-17 to 2030-01-23, 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. 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
2030-01-20 06:16:00 Earth 0.1556 AU 60.5 LD 12 km/s
2035-01-09 17:03:00 Earth 0.1643 AU 63.9 LD 12 km/s
2036-01-29 13:09:00 Venus 0.0806 AU 31.4 LD 18.2 km/s
2036-07-25 07:57:00 Mercury 0.0994 AU 38.7 LD 41.1 km/s
2036-07-25 07:57:00 Merc 0.0994 AU 38.7 LD 41.1 km/s
2036-09-12 02:23:00 Venus 0.0577 AU 22.5 LD 22.1 km/s
2037-04-27 08:12:00 Venus 0.1167 AU 45.4 LD 26.2 km/s
2039-09-13 01:47:00 Merc 0.0694 AU 27.0 LD 37.4 km/s
2039-09-13 01:47:00 Mercury 0.0694 AU 27.0 LD 37.4 km/s
2039-12-31 01:02:00 Earth 0.1488 AU 57.9 LD 12 km/s

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

Sources