Skip to content
Public Universe
Trans-Neptunian object

469505

Add to an observing list or journal →

469505 (2003 FE128)

469505 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 35.81 AU to 59.69 AU from the Sun; one orbit takes 330 years. Discovered 31 March 2003 by Buie, M. W.. Orbit from the JPL solution of 7 October 2026.

Where is it now

Distance from Sun
36.901 AU
True anomaly
31.52°
Distance from Earth
37.648 AU
As of
25 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 — 0.994 AU from the Sun Earth 469505 — 36.901 AU from the Sun 469505
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 469505 is 37.648 AU from Earth today (5.2 light-hours).

In the sky

Right ascension
16h 48m 02s
Declination
-19° 04′ 50″
Constellation
Ophiuchus
Distance from Earth
37.66 AU
Elongation from the Sun
40.08° — 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
47.75 AU
Eccentricity
0.25
Inclination
3.38°
Orbital period
330 years
Perihelion
35.812 AU
Aphelion
59.688 AU
Longitude of ascending node
169.21°
Argument of periapsis
53.27°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 13,545.3 LD
34.8055 AU
Tisserand (Jupiter)
5.965

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
125
Data arc
22.33 years
First observed
31 March 2003
Last observed
28 July 2025
Residual RMS
0.47 ″
Solution · Otto Matic
7 October 2026

Visual & observation

Absolute magnitude (H)
6.3

Discovery & classification

Discovered by
Buie, M. W.
Discovery date
31 March 2003
Discovery site
Kitt Peak

Also known as 2003 FE128

TNO

Sources