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Trans-Neptunian object

2019 JW147

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(2019 JW147)

Where is it now

Distance from Sun
49.547 AU
True anomaly
175.39°
Distance from Earth
50.289 AU
As of
20 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 — 0.996 AU from the Sun Earth 2019 JW147 — 49.547 AU from the Sun 2019 JW147
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2019 JW147 is 50.289 AU from Earth today (7.0 light-hours).

In the sky

Right ascension
10h 59m 21s
Declination
-01° 01′ 07″
Constellation
Leo
Distance from Earth
50.28 AU
Elongation from the Sun
41.84° — 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
43.809 AU
Eccentricity
0.1315
Inclination
7.38°
Orbital period
290 years
Perihelion
38.047 AU
Aphelion
49.571 AU
Longitude of ascending node
273.8°
Argument of periapsis
76.61°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,418.1 LD
37.0482 AU
Tisserand (Jupiter)
5.824

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
15
Data arc
4.9 years
First observed
23 February 2015
Last observed
19 January 2020
Residual RMS
0.15 ″
Solution · Otto Matic
30 December 2024

Visual & observation

Absolute magnitude (H)
7.87

Discovery & classification

TNO

Sources