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Trans-Neptunian object

1999 CR133

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(1999 CR133)

Where is it now

Distance from Sun
42.25 AU
True anomaly
46.48°
Distance from Earth
42.949 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 1999 CR133 — 42.25 AU from the Sun 1999 CR133
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 1999 CR133 is 42.949 AU from Earth today (6.0 light-hours).

In the sky

Right ascension
10h 48m 32s
Declination
+08° 19′ 52″
Constellation
Leo
Distance from Earth
42.94 AU
Elongation from the Sun
45.3° — near the Sun — look low at dusk or dawn

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
42.252 AU
Eccentricity
0
Inclination
1.73°
Orbital period
274.6 years
Perihelion
42.25 AU
Aphelion
42.254 AU
Longitude of ascending node
135.13°
Argument of periapsis
337.79°
Epoch · J2000
2451224.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 16,047.6 LD
41.2353 AU
Tisserand (Jupiter)
5.82

Orbit quality

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

Observations used
4
Data arc
6 days
First observed
12 February 1999
Last observed
18 February 1999
Residual RMS
0.07 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
8.08

Discovery & classification

TNO

Sources