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Asteroid Near-Earth

2025 HF12

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(2025 HF12)

Where is it now

Distance from Sun
1.166 AU
True anomaly
138.35°
Distance from Earth
1.7 AU
As of
24 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 — 0.994 AU from the Sun Earth 2025 HF12 — 1.166 AU from the Sun 2025 HF12
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 HF12 is 1.7 AU from Earth today (14.1 light-minutes).

In the sky

Right ascension
11h 40m 45s
Declination
+12° 31′ 42″
Constellation
Leo
Distance from Earth
1.7 AU
Elongation from the Sun
41.87° — 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
0.971 AU
Eccentricity
0.4201
Inclination
14.11°
Orbital period
349.5 days
Perihelion
0.563 AU
Aphelion
1.379 AU
Longitude of ascending node
51.21°
Argument of periapsis
305.9°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 9.0 LD
0.0232 AU
Tisserand (Jupiter)
6.119

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
151
Data arc
4.17 years
First observed
8 March 2022
Last observed
10 May 2026
Residual RMS
0.27 ″
Solution · Otto Matic
26 August 2026

Visual & observation

Absolute magnitude (H)
22.8

Discovery & classification

Aten Near-Earth Object

Close approaches 50 on record

Flyby geometry
Ecliptic flyby of 2025 HF12 at 2048-05-15 11:47 UTC Top-down view of the ecliptic, Earth at the centre, for the 2048-05-15 11:47 UTC close approach of 2025 HF12. Catalogue miss distance 20.7 LD · 7.95 × 10⁶ km. The curve is the geocentric path from 2048-05-12 to 2048-05-18, 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 13 May 18 May 20.7 LD · 7.95 × 10⁶ km 2048-05-15 11:47 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2048-05-15 11:47 UTC close approach of 2025 HF12. Catalogue miss distance 20.7 LD · 7.95 × 10⁶ km. The curve is the geocentric path from 2048-05-12 to 2048-05-18, 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
2048-05-15 11:47:00 Earth 0.0532 AU 20.7 LD 15.8 km/s
2068-09-22 21:07:00 Venus 0.1411 AU 54.9 LD 20.8 km/s
2069-05-14 15:50:00 Earth 0.1888 AU 73.5 LD 10.6 km/s
2070-05-15 15:47:00 Earth 0.0676 AU 26.3 LD 16.2 km/s
2077-05-02 13:55:00 Venus 0.1069 AU 41.6 LD 19 km/s
2085-12-10 15:10:00 Venus 0.0844 AU 32.8 LD 17.7 km/s
2091-05-15 07:41:00 Earth 0.1876 AU 73.0 LD 10.6 km/s
2092-05-15 06:25:00 Earth 0.0684 AU 26.6 LD 16.2 km/s
2094-07-21 09:05:00 Venus 0.0737 AU 28.7 LD 17 km/s
2103-03-02 12:38:00 Venus 0.0688 AU 26.8 LD 16.6 km/s

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

Sources