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Centaur

2015 KG157

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(2015 KG157)

Where is it now

Distance from Sun
5.951 AU
True anomaly
241.29°
Distance from Earth
5.505 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 2015 KG157 — 5.951 AU from the Sun 2015 KG157
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 KG157 is 5.505 AU from Earth today (45.8 light-minutes).

In the sky

Right ascension
05h 44m 38s
Declination
+21° 08′ 23″
Constellation
Taurus
Distance from Earth
5.49 AU
Elongation from the Sun
112.61° — well clear of the Sun

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
5.861 AU
Eccentricity
0.4539
Inclination
73.57°
Orbital period
14.19 years
Perihelion
3.2 AU
Aphelion
8.521 AU
Longitude of ascending node
78.11°
Argument of periapsis
116.51°
Epoch · J2000
2457172.5
Orbit class · CEN
Centaur
Earth MOID · 985.7 LD
2.5327 AU
Tisserand (Jupiter)
1.423

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 9).

Observations used
12
Data arc
2 days
First observed
29 May 2015
Last observed
31 May 2015
Residual RMS
0.43 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
15.7

Discovery & classification

Centaur

Sources