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Trans-Neptunian object

2015 NR45

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(2015 NR45)

2015 NR45 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 22.67 AU to 73.13 AU from the Sun; one orbit takes 331.5 years. Orbit from the JPL solution of 11 April 2025.

Where is it now

Distance from Sun
36.103 AU
True anomaly
94.51°
Distance from Earth
35.304 AU
As of
25 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 2015 NR45 — 36.103 AU from the Sun 2015 NR45
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 NR45 is 35.304 AU from Earth today (4.9 light-hours).

In the sky

Right ascension
23h 28m 40s
Declination
+14° 34′ 17″
Constellation
Pegasus
Distance from Earth
35.31 AU
Elongation from the Sun
142.3° — well clear of the Sun

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
47.9 AU
Eccentricity
0.5268
Inclination
25.5°
Orbital period
331.5 years
Perihelion
22.667 AU
Aphelion
73.133 AU
Longitude of ascending node
322.47°
Argument of periapsis
305.55°
Epoch · J2000
2457222.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 8,451.6 LD
21.7168 AU
Tisserand (Jupiter)
4.764

Orbit quality

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

Observations used
10
Data arc
7 days
First observed
15 July 2015
Last observed
22 July 2015
Residual RMS
0.11 ″
Solution · Otto Matic
11 April 2025

Visual & observation

Absolute magnitude (H)
10.39

Discovery & classification

TNO

Sources