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Centaur

2019 RZ16

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(2019 RZ16)

Where is it now

Distance from Sun
10.899 AU
True anomaly
173.39°
Distance from Earth
11.39 AU
As of
11 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth 2019 RZ16 — 10.899 AU from the Sun 2019 RZ16
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2019 RZ16 is 11.39 AU from Earth today (1.6 light-hours).

In the sky

Right ascension
09h 33m 11s
Declination
+16° 54′ 36″
Constellation
Leo
Distance from Earth
11.38 AU
Elongation from the Sun
58.92° — near the Sun — look low at dusk or dawn

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
6.692 AU
Eccentricity
0.6486
Inclination
4.58°
Orbital period
17.31 years
Perihelion
2.352 AU
Aphelion
11.033 AU
Longitude of ascending node
104.69°
Argument of periapsis
217.63°
Epoch · J2000
2461200.5
Orbit class · CEN
Centaur
Earth MOID · 521.7 LD
1.3406 AU
Tisserand (Jupiter)
2.498

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
39
Data arc
19.3 years
First observed
3 September 2000
Last observed
21 December 2019
Residual RMS
0.43 ″
Solution · Otto Matic
11 April 2025

Visual & observation

Absolute magnitude (H)
16.44

Discovery & classification

Centaur

Close approaches 9 on record

When (UTC) Body Distance Lunar distances Relative speed
2072-06-04 07:17:00 Jupiter 0.2955 AU 115.0 LD 9.8 km/s
2072-06-04 07:17:00 Juptr 0.2955 AU 115.0 LD 9.8 km/s
2089-07-12 19:44:00 Juptr 0.8392 AU 326.6 LD 7.1 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources