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Asteroid Near-Earth

2023 HO2

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(2023 HO2)

Where is it now

Distance from Sun
1.195 AU
True anomaly
205.54°
Distance from Earth
2.044 AU
As of
20 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 2023 HO2 — 1.195 AU from the Sun 2023 HO2
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 HO2 is 2.044 AU from Earth today (17.0 light-minutes).

In the sky

Right ascension
15h 15m 32s
Declination
-08° 01′ 31″
Constellation
Libra
Distance from Earth
2.04 AU
Elongation from the Sun
23.09° — 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
0.879 AU
Eccentricity
0.4822
Inclination
24.55°
Orbital period
301.1 days
Perihelion
0.455 AU
Aphelion
1.303 AU
Longitude of ascending node
205.58°
Argument of periapsis
198.34°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 66.6 LD
0.1711 AU
Tisserand (Jupiter)
6.573

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
38
Data arc
24 days
First observed
18 April 2023
Last observed
12 May 2023
Residual RMS
0.49 ″
Solution · Otto Matic
23 May 2023

Visual & observation

Absolute magnitude (H)
22.74

Discovery & classification

Aten Near-Earth Object

Close approaches 134 on record

Flyby geometry
Ecliptic flyby of 2023 HO2 at 2027-04-02 01:01 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-04-02 01:01 UTC close approach of 2023 HO2. Catalogue miss distance 132.8 LD · 5.1 × 10⁷ km. The curve is the geocentric path from 2027-03-30 to 2027-04-05, 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 132.8 LD · 5.1 × 10⁷ km 2027-04-02 01:01 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-04-02 01:01 UTC close approach of 2023 HO2. Catalogue miss distance 132.8 LD · 5.1 × 10⁷ km. The curve is the geocentric path from 2027-03-30 to 2027-04-05, 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
2027-04-02 01:01:00 Earth 0.3412 AU 132.8 LD 23.9 km/s
2028-05-07 02:54:00 Earth 0.3508 AU 136.5 LD 14.5 km/s
2028-08-27 23:00:00 Earth 0.4963 AU 193.1 LD 20 km/s
2032-03-29 06:29:00 Earth 0.1719 AU 66.9 LD 16.6 km/s
2033-05-30 15:44:00 Earth 0.3699 AU 143.9 LD 14.6 km/s
2037-04-11 19:10:00 Earth 0.2514 AU 97.8 LD 14.6 km/s
2038-06-07 21:46:00 Earth 0.4426 AU 172.3 LD 20.7 km/s
2041-04-04 15:20:00 Earth 0.4216 AU 164.1 LD 26.7 km/s
2042-05-01 04:47:00 Earth 0.3366 AU 131.0 LD 14.6 km/s
2046-03-29 04:35:00 Earth 0.1985 AU 77.2 LD 18.5 km/s

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

Sources