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Trans-Neptunian object

2015 KM199

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(2015 KM199)

Where is it now

Distance from Sun
39.894 AU
True anomaly
104.69°
Distance from Earth
40.565 AU
As of
16 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 KM199 — 39.894 AU from the Sun 2015 KM199
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 KM199 is 40.565 AU from Earth today (5.6 light-hours).

In the sky

Right ascension
16h 37m 37s
Declination
-18° 35′ 16″
Constellation
Ophiuchus
Distance from Earth
40.57 AU
Elongation from the Sun
46.59° — 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
39.38 AU
Eccentricity
0.187
Inclination
6.59°
Orbital period
247.1 years
Perihelion
32.014 AU
Aphelion
46.745 AU
Longitude of ascending node
103.77°
Argument of periapsis
42.89°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 12,076.0 LD
31.0299 AU
Tisserand (Jupiter)
5.501

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
27
Data arc
732 days
First observed
29 May 2014
Last observed
30 May 2016
Residual RMS
0.3 ″
Solution · Otto Matic
9 May 2021

Visual & observation

Absolute magnitude (H)
9.32

Discovery & classification

TNO

Sources