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Trans-Neptunian object

2017 DQ171

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(2017 DQ171)

Where is it now

Distance from Sun
38.635 AU
True anomaly
30.86°
Distance from Earth
39.619 AU
As of
22 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 — 0.995 AU from the Sun Earth 2017 DQ171 — 38.635 AU from the Sun 2017 DQ171
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 DQ171 is 39.619 AU from Earth today (5.5 light-hours).

In the sky

Right ascension
13h 33m 51s
Declination
-04° 00′ 21″
Constellation
Virgo
Distance from Earth
39.62 AU
Elongation from the Sun
8.61° — too close to the Sun to observe

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
45.662 AU
Eccentricity
0.1714
Inclination
7.56°
Orbital period
308.6 years
Perihelion
37.834 AU
Aphelion
53.489 AU
Longitude of ascending node
156.24°
Argument of periapsis
16.18°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,337.6 LD
36.8412 AU
Tisserand (Jupiter)
5.9

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
14
Data arc
2.99 years
First observed
5 April 2016
Last observed
3 April 2019
Residual RMS
0.1 ″
Solution · Otto Matic
30 July 2024

Visual & observation

Absolute magnitude (H)
9.64

Discovery & classification

TNO

Sources