Skip to content
Public Universe
Trans-Neptunian object

2017 BN233

Add to an observing list or journal →

(2017 BN233)

2017 BN233 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 37.17 AU to 57.22 AU from the Sun; one orbit takes 324.2 years. Orbit from the JPL solution of 5 June 2026.

Where is it now

Distance from Sun
37.83 AU
True anomaly
334.27°
Distance from Earth
38.493 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 2017 BN233 — 37.83 AU from the Sun 2017 BN233
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 BN233 is 38.493 AU from Earth today (5.3 light-hours).

In the sky

Right ascension
10h 49m 55s
Declination
-04° 50′ 59″
Constellation
Sextans
Distance from Earth
38.49 AU
Elongation from the Sun
47.64° — 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
47.196 AU
Eccentricity
0.2124
Inclination
11.7°
Orbital period
324.2 years
Perihelion
37.173 AU
Aphelion
57.22 AU
Longitude of ascending node
245.55°
Argument of periapsis
304.62°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,083.5 LD
36.1882 AU
Tisserand (Jupiter)
5.874

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
32
Data arc
12.77 years
First observed
3 April 2013
Last observed
11 January 2026
Residual RMS
0.15 ″
Solution · Otto Matic
5 June 2026

Visual & observation

Absolute magnitude (H)
7.38

Discovery & classification

TNO

Sources