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Trans-Neptunian object

1995 FB21

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(1995 FB21)

Where is it now

Distance from Sun
42.424 AU
True anomaly
286.74°
Distance from Earth
42.714 AU
As of
18 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 1995 FB21 — 42.424 AU from the Sun 1995 FB21
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 1995 FB21 is 42.714 AU from Earth today (5.9 light-hours).

In the sky

Right ascension
18h 34m 16s
Declination
-23° 50′ 24″
Constellation
Sagittarius
Distance from Earth
42.72 AU
Elongation from the Sun
72.06° — well clear of the Sun

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
42.425 AU
Eccentricity
0.0001
Inclination
0.68°
Orbital period
276.3 years
Perihelion
42.422 AU
Aphelion
42.427 AU
Longitude of ascending node
28.36°
Argument of periapsis
324.01°
Epoch · J2000
2449812.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 16,114.5 LD
41.407 AU
Tisserand (Jupiter)
5.833

Orbit quality

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

Observations used
11
Data arc
9 days
First observed
29 March 1995
Last observed
7 April 1995
Residual RMS
0.18 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
7.5

Discovery & classification

TNO

Sources