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Trans-Neptunian object

2009 KM30

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(2009 KM30)

Where is it now

Distance from Sun
41.473 AU
True anomaly
23.79°
Distance from Earth
41.867 AU
As of
18 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 — 0.996 AU from the Sun Earth 2009 KM30 — 41.473 AU from the Sun 2009 KM30
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2009 KM30 is 41.867 AU from Earth today (5.8 light-hours).

In the sky

Right ascension
18h 05m 58s
Declination
-26° 57′ 49″
Constellation
Sagittarius
Distance from Earth
41.87 AU
Elongation from the Sun
65.98° — well clear of the Sun

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
41.732 AU
Eccentricity
0.0068
Inclination
3.84°
Orbital period
269.6 years
Perihelion
41.449 AU
Aphelion
42.015 AU
Longitude of ascending node
24.38°
Argument of periapsis
224.46°
Epoch · J2000
2454988.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,736.6 LD
40.4361 AU
Tisserand (Jupiter)
5.776

Orbit quality

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

Observations used
26
Data arc
53 days
First observed
25 May 2009
Last observed
17 July 2009
Residual RMS
0.22 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
8.93

Discovery & classification

TNO

Sources