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Trans-Neptunian object

623070

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623070 (2015 KW174)

623070 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 35.15 AU to 62.06 AU from the Sun; one orbit takes 338.9 years. Discovered 21 May 2015 by Outer Solar System Origins Survey. Orbit from the JPL solution of 27 July 2023.

Where is it now

Distance from Sun
40.764 AU
True anomaly
291.41°
Distance from Earth
41.54 AU
As of
26 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 623070 — 40.764 AU from the Sun 623070
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 623070 is 41.54 AU from Earth today (5.8 light-hours).

In the sky

Right ascension
16h 41m 40s
Declination
-12° 56′ 03″
Constellation
Ophiuchus
Distance from Earth
41.54 AU
Elongation from the Sun
38.19° — 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
48.608 AU
Eccentricity
0.2768
Inclination
13.52°
Orbital period
338.9 years
Perihelion
35.152 AU
Aphelion
62.063 AU
Longitude of ascending node
208.16°
Argument of periapsis
112.77°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 13,295.4 LD
34.1632 AU
Tisserand (Jupiter)
5.818

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
36
Data arc
8.96 years
First observed
1 June 2014
Last observed
17 May 2023
Residual RMS
0.19 ″
Solution · Otto Matic
27 July 2023

Visual & observation

Absolute magnitude (H)
7.83

Discovery & classification

Discovered by
Outer Solar System Origins Survey
Discovery date
21 May 2015
Discovery site
Maunakea

Also known as 2015 KW174

TNO

Sources