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Comet

Barros

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C/2018 E2 (Barros)

Barros is a comet in the Comet orbit class. Its orbit takes it from 3.92 AU to 3,265.63 AU from the Sun; one orbit takes 66,099.1 years. Orbit from the JPL solution of 6 July 2022.

Where is it now

Distance from Sun
20.774 AU
True anomaly
128.63°
Distance from Earth
20.168 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 Barros — 20.774 AU from the Sun Barros
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Barros is 20.168 AU from Earth today (2.8 light-hours).

In the sky

Right ascension
02h 30m 02s
Declination
+65° 37′ 16″
Constellation
Cassiopeia
Distance from Earth
20.17 AU
Elongation from the Sun
126.57° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

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
1,634.776 AU
Eccentricity
0.9976
Inclination
97.74°
Orbital period
66,099.1 years
Perihelion
3.922 AU
Aphelion
3,265.63 AU
Longitude of ascending node
67.2°
Argument of periapsis
277.48°
Epoch · J2000
2458202.5
Orbit class · COM
Comet
Earth MOID · 1,427.4 LD
3.6677 AU
Tisserand (Jupiter)
-0.327

Orbit quality

Observations used
62
Data arc
4.62 years
First observed
23 May 2015
Last observed
3 January 2020
Residual RMS
0.48 ″
Solution · Otto Matic
6 July 2022

Visual & observation

Absolute magnitude (H)
9.9
Total magnitude M₁ · K₁ 10.3
9.9

Discovery & classification

Also known as 2018 E2

Named

Sources