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Asteroid Near-Earth

2015 CB

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(2015 CB)

Where is it now

Distance from Sun
0.786 AU
True anomaly
43.81°
Distance from Earth
0.454 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 2015 CB — 0.786 AU from the Sun 2015 CB
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 CB is 0.454 AU from Earth today (3.8 light-minutes).

In the sky

Right ascension
11h 56m 59s
Declination
+31° 06′ 48″
Constellation
Ursa Major
Distance from Earth
0.45 AU
Elongation from the Sun
50.37° — 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
0.943 AU
Eccentricity
0.2055
Inclination
15.76°
Orbital period
334.4 days
Perihelion
0.749 AU
Aphelion
1.137 AU
Longitude of ascending node
319.12°
Argument of periapsis
47.7°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 20.0 LD
0.0513 AU
Tisserand (Jupiter)
6.32

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
189
Data arc
11.04 years
First observed
1 February 2015
Last observed
17 February 2026
Residual RMS
0.64 ″
Solution · Otto Matic
10 April 2026

Visual & observation

Absolute magnitude (H)
23.26

Discovery & classification

Aten Near-Earth Object

Close approaches 53 on record

Flyby geometry
Ecliptic flyby of 2015 CB at 2037-02-11 14:46 UTC Top-down view of the ecliptic, Earth at the centre, for the 2037-02-11 14:46 UTC close approach of 2015 CB. Catalogue miss distance 51.5 LD · 1.98 × 10⁷ km. The curve is the geocentric path from 2037-02-08 to 2037-02-14, 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 51.5 LD · 1.98 × 10⁷ km 2037-02-11 14:46 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2037-02-11 14:46 UTC close approach of 2015 CB. Catalogue miss distance 51.5 LD · 1.98 × 10⁷ km. The curve is the geocentric path from 2037-02-08 to 2037-02-14, 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
2037-02-11 14:46:00 Earth 0.1324 AU 51.5 LD 8.7 km/s
2056-10-29 17:22:00 Venus 0.1269 AU 49.4 LD 10.7 km/s
2058-02-01 04:00:00 Earth 0.1416 AU 55.1 LD 12.3 km/s
2058-09-04 13:46:00 Venus 0.0762 AU 29.6 LD 11.7 km/s
2059-07-20 19:19:00 Earth 0.1969 AU 76.6 LD 10.7 km/s
2060-07-08 14:45:00 Venus 0.1277 AU 49.7 LD 14.1 km/s
2069-02-01 05:24:00 Earth 0.0675 AU 26.3 LD 10.4 km/s
2080-02-04 14:16:00 Earth 0.061 AU 23.7 LD 9.2 km/s
2091-02-12 11:38:00 Earth 0.1352 AU 52.6 LD 8.6 km/s
2096-03-15 04:57:00 Venus 0.0811 AU 31.6 LD 11.3 km/s

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

Sources