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Centaur

2017 BA94

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(2017 BA94)

Where is it now

Distance from Sun
10.319 AU
True anomaly
189.92°
Distance from Earth
9.827 AU
As of
11 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth 2017 BA94 — 10.319 AU from the Sun 2017 BA94
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 BA94 is 9.827 AU from Earth today (1.4 light-hours).

In the sky

Right ascension
20h 58m 05s
Declination
-01° 47′ 12″
Constellation
Aquarius
Distance from Earth
9.83 AU
Elongation from the Sun
116.51° — well clear of the Sun

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
6.441 AU
Eccentricity
0.6459
Inclination
19.23°
Orbital period
16.35 years
Perihelion
2.281 AU
Aphelion
10.601 AU
Longitude of ascending node
275.64°
Argument of periapsis
217.59°
Epoch · J2000
2461200.5
Orbit class · CEN
Centaur
Earth MOID · 516.3 LD
1.3266 AU
Tisserand (Jupiter)
2.412

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
31
Data arc
31 days
First observed
3 January 2017
Last observed
3 February 2017
Residual RMS
0.47 ″
Solution · Otto Matic
6 June 2022

Visual & observation

Absolute magnitude (H)
17.62

Discovery & classification

Centaur

Sources