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Asteroid Near-Earth

2025 WZ9

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(2025 WZ9)

Where is it now

Distance from Sun
1.157 AU
True anomaly
187.78°
Distance from Earth
1.506 AU
As of
16 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 — 0.997 AU from the Sun Earth 2025 WZ9 — 1.157 AU from the Sun 2025 WZ9
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 WZ9 is 1.506 AU from Earth today (12.5 light-minutes).

In the sky

Right ascension
11h 01m 09s
Declination
+25° 51′ 53″
Constellation
Leo Minor
Distance from Earth
1.5 AU
Elongation from the Sun
50.26° — 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
0.801 AU
Eccentricity
0.4542
Inclination
27.49°
Orbital period
262.1 days
Perihelion
0.437 AU
Aphelion
1.166 AU
Longitude of ascending node
54.49°
Argument of periapsis
232.42°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 29.8 LD
0.0766 AU
Tisserand (Jupiter)
7.113

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
51
Data arc
5.24 years
First observed
20 October 2020
Last observed
17 January 2026
Residual RMS
0.32 ″
Solution · Otto Matic
18 January 2026

Visual & observation

Absolute magnitude (H)
20.7

Discovery & classification

Aten Near-Earth Object

Close approaches 135 on record

Flyby geometry
Ecliptic flyby of 2025 WZ9 at 2030-11-20 12:24 UTC Top-down view of the ecliptic, Earth at the centre, for the 2030-11-20 12:24 UTC close approach of 2025 WZ9. Catalogue miss distance 57.6 LD · 2.22 × 10⁷ km. The curve is the geocentric path from 2030-11-17 to 2030-11-23, 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 north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 57.6 LD · 2.22 × 10⁷ km 2030-11-20 12:24 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2030-11-20 12:24 UTC close approach of 2025 WZ9. Catalogue miss distance 57.6 LD · 2.22 × 10⁷ km. The curve is the geocentric path from 2030-11-17 to 2030-11-23, 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 north 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
2028-09-03 00:30:00 Venus 0.1076 AU 41.9 LD 19 km/s
2030-11-20 12:24:00 Earth 0.1481 AU 57.6 LD 16.1 km/s
2032-12-23 21:44:00 Venus 0.1148 AU 44.7 LD 18.7 km/s
2035-11-23 16:03:00 Earth 0.0763 AU 29.7 LD 18.6 km/s
2037-04-14 19:54:00 Venus 0.1249 AU 48.6 LD 18.3 km/s
2040-11-27 06:14:00 Earth 0.1476 AU 57.4 LD 21.8 km/s
2041-08-04 19:10:00 Venus 0.1355 AU 52.7 LD 18 km/s
2042-02-25 05:20:00 Mercury 0.0756 AU 29.4 LD 20 km/s
2042-02-25 05:20:00 Merc 0.0756 AU 29.4 LD 20 km/s
2042-11-12 15:55:00 Merc 0.0401 AU 15.6 LD 21.7 km/s

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

Sources