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Trans-Neptunian object

2017 BG233

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(2017 BG233)

Where is it now

Distance from Sun
38.341 AU
True anomaly
37.92°
Distance from Earth
39.125 AU
As of
17 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 2017 BG233 — 38.341 AU from the Sun 2017 BG233
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 BG233 is 39.125 AU from Earth today (5.4 light-hours).

In the sky

Right ascension
11h 03m 52s
Declination
+00° 05′ 28″
Constellation
Leo
Distance from Earth
39.11 AU
Elongation from the Sun
38.6° — 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
41.7 AU
Eccentricity
0.0978
Inclination
16.72°
Orbital period
269.3 years
Perihelion
37.62 AU
Aphelion
45.78 AU
Longitude of ascending node
185.03°
Argument of periapsis
302.4°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,268.9 LD
36.6647 AU
Tisserand (Jupiter)
5.521

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
109
Data arc
831 days
First observed
25 December 2016
Last observed
5 April 2019
Residual RMS
0.12 ″
Solution · Otto Matic
17 September 2025

Visual & observation

Absolute magnitude (H)
9.61

Discovery & classification

TNO

Sources