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Centaur

2016 YO42

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(2016 YO42)

Where is it now

Distance from Sun
7.927 AU
True anomaly
198.16°
Distance from Earth
6.973 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 2016 YO42 — 7.927 AU from the Sun 2016 YO42
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2016 YO42 is 6.973 AU from Earth today (58.0 light-minutes).

In the sky

Right ascension
23h 56m 59s
Declination
+13° 06′ 16″
Constellation
Pegasus
Distance from Earth
6.98 AU
Elongation from the Sun
161.12° — near opposition — up most of the night

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
6.238 AU
Eccentricity
0.2976
Inclination
11.52°
Orbital period
15.58 years
Perihelion
4.382 AU
Aphelion
8.094 AU
Longitude of ascending node
255.99°
Argument of periapsis
271.88°
Epoch · J2000
2461200.5
Orbit class · CEN
Centaur
Earth MOID · 1,328.9 LD
3.4148 AU
Tisserand (Jupiter)
2.883

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
17
Data arc
38 days
First observed
25 December 2016
Last observed
1 February 2017
Residual RMS
0.13 ″
Solution · Otto Matic
11 April 2025

Visual & observation

Absolute magnitude (H)
18.16

Discovery & classification

Centaur

Sources