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Asteroid Near-Earth

2023 OH2

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(2023 OH2)

Where is it now

Distance from Sun
1.194 AU
True anomaly
216.18°
Distance from Earth
0.424 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 2023 OH2 — 1.194 AU from the Sun 2023 OH2
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 OH2 is 0.424 AU from Earth today (3.5 light-minutes).

In the sky

Right ascension
03h 56m 37s
Declination
-56° 28′ 59″
Constellation
Reticulum
Distance from Earth
0.42 AU
Elongation from the Sun
107.27° — 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
0.952 AU
Eccentricity
0.4575
Inclination
20.28°
Orbital period
339.5 days
Perihelion
0.517 AU
Aphelion
1.388 AU
Longitude of ascending node
131.89°
Argument of periapsis
41.15°
Epoch · J2000
2460151.5
Orbit class · ATE
Aten
Earth MOID · 28.9 LD
0.0742 AU
Tisserand (Jupiter)
6.177

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
50
Data arc
15 days
First observed
24 July 2023
Last observed
8 August 2023
Residual RMS
0.34 ″
Solution · Otto Matic
1 September 2023

Visual & observation

Absolute magnitude (H)
23.36

Discovery & classification

Aten Near-Earth Object

Close approaches 14 on record

Flyby geometry
Ecliptic flyby of 2023 OH2 at 2026-12-17 01:20 UTC Top-down view of the ecliptic, Earth at the centre, for the 2026-12-17 01:20 UTC close approach of 2023 OH2. Catalogue miss distance 126.3 LD · 4.86 × 10⁷ km. The curve is the geocentric path from 2026-12-14 to 2026-12-20, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 126.3 LD · 4.86 × 10⁷ km 2026-12-17 01:20 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2026-12-17 01:20 UTC close approach of 2023 OH2. Catalogue miss distance 126.3 LD · 4.86 × 10⁷ km. The curve is the geocentric path from 2026-12-14 to 2026-12-20, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2026-12-17 01:20:00 Earth 0.3246 AU 126.3 LD 15.9 km/s
2027-11-09 20:30:00 Earth 0.4416 AU 171.8 LD 23.9 km/s
2035-08-07 12:16:00 Earth 0.4087 AU 159.1 LD 27.4 km/s
2036-07-25 06:08:00 Earth 0.0741 AU 28.8 LD 16.3 km/s

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

Sources