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Centaur

2023 OS44

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(2023 OS44)

Where is it now

Distance from Sun
6.467 AU
True anomaly
127.35°
Distance from Earth
6.935 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 2023 OS44 — 6.467 AU from the Sun 2023 OS44
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 OS44 is 6.935 AU from Earth today (57.7 light-minutes).

In the sky

Right ascension
09h 31m 07s
Declination
+15° 15′ 36″
Constellation
Leo
Distance from Earth
6.93 AU
Elongation from the Sun
58.85° — 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
6.043 AU
Eccentricity
0.5125
Inclination
16.95°
Orbital period
14.86 years
Perihelion
2.946 AU
Aphelion
9.14 AU
Longitude of ascending node
314.49°
Argument of periapsis
50.65°
Epoch · J2000
2461200.5
Orbit class · CEN
Centaur
Earth MOID · 770.1 LD
1.9788 AU
Tisserand (Jupiter)
2.631

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
39
Data arc
104 days
First observed
26 July 2023
Last observed
7 November 2023
Residual RMS
0.45 ″
Solution · Otto Matic
16 November 2023

Visual & observation

Absolute magnitude (H)
16.61

Discovery & classification

Centaur

Close approaches 7 on record

When (UTC) Body Distance Lunar distances Relative speed
2138-12-18 19:04:00 Juptr 1.3011 AU 506.4 LD 6.8 km/s
2156-11-19 22:01:00 Juptr 1.4512 AU 564.8 LD 10.2 km/s
2200-01-18 08:19:00 Juptr 1.9604 AU 762.9 LD 7.9 km/s

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

Sources