Skip to content
Public Universe
Trans-Neptunian object

1999 RX214

Add to an observing list or journal →

(1999 RX214)

Where is it now

Distance from Sun
49.631 AU
True anomaly
124.47°
Distance from Earth
48.64 AU
As of
22 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 — 0.995 AU from the Sun Earth 1999 RX214 — 49.631 AU from the Sun 1999 RX214
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 1999 RX214 is 48.64 AU from Earth today (6.7 light-hours).

In the sky

Right ascension
02h 05m 16s
Declination
+15° 21′ 51″
Constellation
Aries
Distance from Earth
48.64 AU
Elongation from the Sun
175.14° — near opposition — up most of the night

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
46.209 AU
Eccentricity
0.1686
Inclination
4.82°
Orbital period
314.1 years
Perihelion
38.419 AU
Aphelion
53.998 AU
Longitude of ascending node
3.83°
Argument of periapsis
266.16°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,557.5 LD
37.4062 AU
Tisserand (Jupiter)
5.967

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
30
Data arc
17.88 years
First observed
6 September 1999
Last observed
24 July 2017
Residual RMS
0.21 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
6.78

Discovery & classification

TNO

Sources