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Asteroid Near-Earth

2025 OM4

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(2025 OM4)

Where is it now

Distance from Sun
0.723 AU
True anomaly
287.56°
Distance from Earth
0.898 AU
As of
19 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 2025 OM4 — 0.723 AU from the Sun 2025 OM4
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 OM4 is 0.898 AU from Earth today (7.5 light-minutes).

In the sky

Right ascension
10h 55m 35s
Declination
+05° 19′ 45″
Constellation
Leo
Distance from Earth
0.9 AU
Elongation from the Sun
44.13° — 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
0.862 AU
Eccentricity
0.294
Inclination
2.28°
Orbital period
292.2 days
Perihelion
0.608 AU
Aphelion
1.115 AU
Longitude of ascending node
139.52°
Argument of periapsis
19.74°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 5.4 LD
0.0138 AU
Tisserand (Jupiter)
6.815

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
38
Data arc
23 days
First observed
25 July 2025
Last observed
17 August 2025
Residual RMS
0.6 ″
Solution · Otto Matic
26 August 2026

Visual & observation

Absolute magnitude (H)
25.2

Discovery & classification

Aten Near-Earth Object

Close approaches 82 on record

Flyby geometry
Ecliptic flyby of 2025 OM4 at 2029-07-27 04:06 UTC Top-down view of the ecliptic, Earth at the centre, for the 2029-07-27 04:06 UTC close approach of 2025 OM4. Catalogue miss distance 16.8 LD · 6.45 × 10⁶ km. The curve is the geocentric path from 2029-07-24 to 2029-07-30, 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. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 16.8 LD · 6.45 × 10⁶ km 2029-07-27 04:06 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2029-07-27 04:06 UTC close approach of 2025 OM4. Catalogue miss distance 16.8 LD · 6.45 × 10⁶ km. The curve is the geocentric path from 2029-07-24 to 2029-07-30, 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. 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
2027-10-16 09:12:00 Venus 0.1428 AU 55.6 LD 16.3 km/s
2029-07-27 04:06:00 Earth 0.0431 AU 16.8 LD 6.3 km/s
2030-01-16 19:57:00 Venus 0.0962 AU 37.4 LD 7.1 km/s
2033-07-28 01:00:00 Earth 0.0477 AU 18.5 LD 6.2 km/s
2035-10-15 05:48:00 Venus 0.1391 AU 54.1 LD 16.1 km/s
2037-08-01 02:14:00 Earth 0.063 AU 24.5 LD 5.9 km/s
2038-01-09 13:31:00 Venus 0.086 AU 33.5 LD 6.7 km/s
2041-08-06 13:27:00 Earth 0.0778 AU 30.3 LD 5.8 km/s
2043-10-12 01:48:00 Venus 0.0939 AU 36.5 LD 14 km/s
2045-08-13 13:46:00 Earth 0.0912 AU 35.5 LD 5.8 km/s

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

Sources