Skip to content
Public Universe
Trans-Neptunian object

469306

Add to an observing list or journal →

469306 (1999 CD158)

Where is it now

Distance from Sun
45.573 AU
True anomaly
246.09°
Distance from Earth
46.048 AU
As of
20 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 469306 — 45.573 AU from the Sun 469306
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 469306 is 46.048 AU from Earth today (6.4 light-hours).

In the sky

Right ascension
10h 15m 21s
Declination
+23° 46′ 26″
Constellation
Leo
Distance from Earth
46.04 AU
Elongation from the Sun
61.46° — 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
43.838 AU
Eccentricity
0.1412
Inclination
25.42°
Orbital period
290.3 years
Perihelion
37.648 AU
Aphelion
50.029 AU
Longitude of ascending node
118.94°
Argument of periapsis
143.43°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,269.2 LD
36.6654 AU
Tisserand (Jupiter)
5.309

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
282
Data arc
26.93 years
First observed
10 February 1999
Last observed
14 January 2026
Residual RMS
0.59 ″
Solution · Otto Matic
7 June 2026

Physical properties

Rotation period
6.88 hours

Visual & observation

Absolute magnitude (H)
5.24

Discovery & classification

Discovered by
Luu, J. X., Jewitt, D. C., Trujillo, C. A.
Discovery date
10 February 1999
Discovery site
Mauna Kea

Also known as 1999 CD158

TNO

Sources