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Asteroid Near-Earth

2012 XE133

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(2012 XE133)

Where is it now

Distance from Sun
0.427 AU
True anomaly
29.18°
Distance from Earth
1.119 AU
As of
15 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 2012 XE133 — 0.427 AU from the Sun 2012 XE133
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2012 XE133 is 1.119 AU from Earth today (9.3 light-minutes).

In the sky

Right ascension
14h 55m 56s
Declination
-16° 16′ 37″
Constellation
Libra
Distance from Earth
1.1 AU
Elongation from the Sun
23.02° — near the Sun — look low at dusk or dawn

Favours the southern hemisphere; low or below the horizon from far north.

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
0.723 AU
Eccentricity
0.4326
Inclination
6.73°
Orbital period
224.6 days
Perihelion
0.41 AU
Aphelion
1.036 AU
Longitude of ascending node
281.01°
Argument of periapsis
337.11°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 1.0 LD
0.0025 AU
Tisserand (Jupiter)
7.863

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
180
Data arc
8.07 years
First observed
12 December 2012
Last observed
5 January 2021
Residual RMS
0.4 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
23.3

Discovery & classification

Aten Near-Earth Object

Close approaches 320 on record

Flyby geometry
Ecliptic flyby of 2012 XE133 at 2028-12-30 09:19 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-12-30 09:19 UTC close approach of 2012 XE133. Catalogue miss distance 3.84 LD · 1.48 × 10⁶ km. The curve is the geocentric path from 2028-12-27 to 2029-01-02, 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 28 Dec 1 Jan 3.84 LD · 1.48 × 10⁶ km 2028-12-30 09:19 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-12-30 09:19 UTC close approach of 2012 XE133. Catalogue miss distance 3.84 LD · 1.48 × 10⁶ km. The curve is the geocentric path from 2028-12-27 to 2029-01-02, 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
2028-12-30 04:07:00 Moon 0.0081 AU 3.1 LD 10.6 km/s
2028-12-30 09:19:00 Earth 0.0099 AU 3.8 LD 9.7 km/s
2031-01-30 13:44:00 Mercury 0.0557 AU 21.7 LD 19.5 km/s
2031-01-30 13:44:00 Merc 0.0557 AU 21.7 LD 19.5 km/s
2031-11-18 17:49:00 Earth 0.2188 AU 85.1 LD 16.3 km/s
2032-03-30 00:10:00 Earth 0.4901 AU 190.7 LD 14.3 km/s
2033-12-28 02:22:00 Earth 0.3676 AU 143.0 LD 22.3 km/s
2035-05-14 23:40:00 Mercury 0.0802 AU 31.2 LD 26.5 km/s
2035-05-14 23:40:00 Merc 0.0802 AU 31.2 LD 26.5 km/s
2036-08-21 20:59:00 Mercury 0.0558 AU 21.7 LD 20.6 km/s

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

Sources