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Asteroid Near-Earth

138013

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138013 (2000 CN101)

Where is it now

Distance from Sun
1.724 AU
True anomaly
225.27°
Distance from Earth
2.632 AU
As of
11 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth 138013 — 1.724 AU from the Sun 138013
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 138013 is 2.632 AU from Earth today (21.9 light-minutes).

In the sky

Right ascension
11h 53m 21s
Declination
-02° 19′ 41″
Constellation
Virgo
Distance from Earth
2.62 AU
Elongation from the Sun
19.83° — too close to the Sun to observe

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
1.598 AU
Eccentricity
0.635
Inclination
15.99°
Orbital period
737.9 days
Perihelion
0.583 AU
Aphelion
2.613 AU
Longitude of ascending node
183.23°
Argument of periapsis
118.84°
Epoch · J2000
2461200.5
Orbit class · APO
Apollo
Earth MOID · 42.4 LD
0.1089 AU
Tisserand (Jupiter)
4.079

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
1,593
Data arc
42.01 years
First observed
7 March 1984
Last observed
11 March 2026
Residual RMS
0.54 ″
Solution · Otto Matic
10 April 2026

Physical properties

Mean radius
1.76 km

Visual & observation

Geometric albedo
0.172
Absolute magnitude (H)
14.7

Discovery & classification

Discovered by
LINEAR
Discovery date
8 February 2000
Discovery site
Socorro

Also known as 2000 CN101 · 1988 XU4

Apollo Near-Earth Object

Close approaches 22 on record

Flyby geometry
Ecliptic flyby of 138013 at 2057-04-11 00:39 UTC Top-down view of the ecliptic, Earth at the centre, for the 2057-04-11 00:39 UTC close approach of 138013. Catalogue miss distance 53.2 LD · 2.04 × 10⁷ km. The curve is the geocentric path from 2057-04-08 to 2057-04-14, 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 north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 14 Apr 53.2 LD · 2.04 × 10⁷ km 2057-04-11 00:39 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2057-04-11 00:39 UTC close approach of 138013. Catalogue miss distance 53.2 LD · 2.04 × 10⁷ km. The curve is the geocentric path from 2057-04-08 to 2057-04-14, 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 north 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
2029-03-15 04:12:00 Venus 0.1411 AU 54.9 LD 16 km/s
2057-04-11 00:39:00 Earth 0.1367 AU 53.2 LD 23.3 km/s
2059-04-16 19:29:00 Earth 0.119 AU 46.3 LD 20 km/s
2061-04-21 16:01:00 Earth 0.1976 AU 76.9 LD 16.7 km/s
2083-10-20 15:19:00 Earth 0.1455 AU 56.6 LD 20 km/s
2085-10-28 04:41:00 Earth 0.1575 AU 61.3 LD 23.3 km/s
2122-02-22 03:40:00 Venus 0.1252 AU 48.7 LD 26.2 km/s
2136-04-15 17:05:00 Venus 0.0949 AU 36.9 LD 24.8 km/s
2150-06-11 01:42:00 Venus 0.1205 AU 46.9 LD 26 km/s
2154-04-10 09:46:00 Earth 0.1835 AU 71.4 LD 25 km/s

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

Sources