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Trans-Neptunian object

2015 KK178

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(2015 KK178)

Where is it now

Distance from Sun
37.084 AU
True anomaly
234.81°
Distance from Earth
37.595 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 2015 KK178 — 37.084 AU from the Sun 2015 KK178
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 KK178 is 37.595 AU from Earth today (5.2 light-hours).

In the sky

Right ascension
17h 21m 22s
Declination
-14° 30′ 40″
Constellation
Serpens
Distance from Earth
37.61 AU
Elongation from the Sun
57.83° — near the Sun — look low at dusk or dawn

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
36.774 AU
Eccentricity
0.0149
Inclination
22.92°
Orbital period
223 years
Perihelion
36.227 AU
Aphelion
37.322 AU
Longitude of ascending node
240.56°
Argument of periapsis
148.13°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 13,718.5 LD
35.2505 AU
Tisserand (Jupiter)
5.038

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
154
Data arc
15.42 years
First observed
16 February 2010
Last observed
20 July 2025
Residual RMS
0.73 ″
Solution · Otto Matic
27 August 2026

Visual & observation

Absolute magnitude (H)
6.46

Discovery & classification

Also known as 2015 MA150

TNO

Sources