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Asteroid Near-Earth

2025 AC1

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(2025 AC1)

Where is it now

Distance from Sun
0.989 AU
True anomaly
215.62°
Distance from Earth
1.882 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 AC1 — 0.989 AU from the Sun 2025 AC1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 AC1 is 1.882 AU from Earth today (15.6 light-minutes).

In the sky

Right ascension
12h 37m 09s
Declination
-00° 31′ 41″
Constellation
Virgo
Distance from Earth
1.88 AU
Elongation from the Sun
18.5° — too close to the Sun to observe

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
0.852 AU
Eccentricity
0.2225
Inclination
6.4°
Orbital period
287.4 days
Perihelion
0.663 AU
Aphelion
1.042 AU
Longitude of ascending node
98.3°
Argument of periapsis
215.87°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 1.0 LD
0.0027 AU
Tisserand (Jupiter)
6.889

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
40
Data arc
19 days
First observed
3 January 2025
Last observed
22 January 2025
Residual RMS
0.55 ″
Solution · Otto Matic
27 January 2025

Visual & observation

Absolute magnitude (H)
26.89

Discovery & classification

Listed by JPL impact monitoring; see the Sentry table for current probabilities.

Aten Near-Earth Object

Close approaches 19 on record

Flyby geometry
Ecliptic flyby of 2025 AC1 at 2035-12-26 08:22 UTC Top-down view of the ecliptic, Earth at the centre, for the 2035-12-26 08:22 UTC close approach of 2025 AC1. Catalogue miss distance 32.5 LD · 1.25 × 10⁷ km. The curve is the geocentric path from 2035-12-23 to 2035-12-29, 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 32.5 LD · 1.25 × 10⁷ km 2035-12-26 08:22 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2035-12-26 08:22 UTC close approach of 2025 AC1. Catalogue miss distance 32.5 LD · 1.25 × 10⁷ km. The curve is the geocentric path from 2035-12-23 to 2035-12-29, 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
2031-02-05 12:49:00 Venus 0.0633 AU 24.6 LD 9.1 km/s
2035-12-26 08:22:00 Earth 0.0836 AU 32.5 LD 8.7 km/s
2036-07-04 17:32:00 Venus 0.064 AU 24.9 LD 6 km/s
2040-03-08 22:02:00 Earth 0.1125 AU 43.8 LD 6.7 km/s
2041-12-13 06:48:00 Venus 0.0605 AU 23.5 LD 9.4 km/s
2050-10-12 14:03:00 Venus 0.0524 AU 20.4 LD 8.3 km/s
2051-02-05 10:35:00 Earth 0.0935 AU 36.4 LD 5.3 km/s
2056-03-10 10:35:00 Venus 0.0637 AU 24.8 LD 6 km/s
2061-08-19 09:34:00 Venus 0.0756 AU 29.4 LD 10.2 km/s
2061-12-28 07:27:00 Earth 0.0059 AU 2.3 LD 6.5 km/s

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

Sources