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Trans-Neptunian object

2005 GA187

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(2005 GA187)

Where is it now

Distance from Sun
34.194 AU
True anomaly
296.03°
Distance from Earth
34.916 AU
As of
16 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 — 0.997 AU from the Sun Earth 2005 GA187 — 34.194 AU from the Sun 2005 GA187
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2005 GA187 is 34.916 AU from Earth today (4.8 light-hours).

In the sky

Right ascension
16h 02m 28s
Declination
-32° 35′ 43″
Constellation
Lupus
Distance from Earth
34.92 AU
Elongation from the Sun
42.69° — near the Sun — look low at dusk or dawn

Favours the southern hemisphere; low or below the horizon from far north.

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
39.224 AU
Eccentricity
0.2147
Inclination
18.76°
Orbital period
245.7 years
Perihelion
30.802 AU
Aphelion
47.646 AU
Longitude of ascending node
27.73°
Argument of periapsis
283.92°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 11,612.8 LD
29.8397 AU
Tisserand (Jupiter)
5.211

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
25
Data arc
10.17 years
First observed
10 April 2005
Last observed
12 June 2015
Residual RMS
0.21 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
7.5

Discovery & classification

TNO

Sources