Skip to content
Public Universe
Trans-Neptunian object

2017 CJ56

Add to an observing list or journal →

(2017 CJ56)

2017 CJ56 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 44.09 AU to 53.9 AU from the Sun; one orbit takes 343 years. Orbit from the JPL solution of 10 May 2024.

Where is it now

Distance from Sun
44.425 AU
True anomaly
336.61°
Distance from Earth
45.391 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 2017 CJ56 — 44.425 AU from the Sun 2017 CJ56
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 CJ56 is 45.391 AU from Earth today (6.3 light-hours).

In the sky

Right ascension
13h 12m 32s
Declination
-08° 38′ 11″
Constellation
Virgo
Distance from Earth
45.39 AU
Elongation from the Sun
13.56° — 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
48.996 AU
Eccentricity
0.1001
Inclination
22.09°
Orbital period
343 years
Perihelion
44.093 AU
Aphelion
53.9 AU
Longitude of ascending node
17.48°
Argument of periapsis
205.79°
Epoch · J2000
2457798.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 16,772.8 LD
43.0986 AU
Tisserand (Jupiter)
5.764

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 9).

Observations used
7
Data arc
21 days
First observed
2 February 2017
Last observed
23 February 2017
Residual RMS
0.19 ″
Solution · Otto Matic
10 May 2024

Visual & observation

Absolute magnitude (H)
9.05

Discovery & classification

TNO

Sources