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Asteroid Near-Earth Potentially hazardous

2015 AH

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(2015 AH)

Where is it now

Distance from Sun
0.697 AU
True anomaly
339.61°
Distance from Earth
1.152 AU
As of
21 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 — 0.995 AU from the Sun Earth 2015 AH — 0.697 AU from the Sun 2015 AH
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 AH is 1.152 AU from Earth today (9.6 light-minutes).

In the sky

Right ascension
16h 16m 26s
Declination
-14° 42′ 40″
Constellation
Scorpius
Distance from Earth
1.15 AU
Elongation from the Sun
36.99° — 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
0.907 AU
Eccentricity
0.2405
Inclination
14.07°
Orbital period
315.5 days
Perihelion
0.689 AU
Aphelion
1.125 AU
Longitude of ascending node
255.27°
Argument of periapsis
70.63°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 15.6 LD
0.0401 AU
Tisserand (Jupiter)
6.523

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
90
Data arc
7.25 years
First observed
23 December 2014
Last observed
23 March 2022
Residual RMS
0.41 ″
Solution · Otto Matic
1 March 2023

Visual & observation

Absolute magnitude (H)
21.58

Discovery & classification

Aten Near-Earth Object Potentially Hazardous Asteroid

Close approaches 160 on record

Flyby geometry
Ecliptic flyby of 2015 AH at 2028-01-05 18:01 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-01-05 18:01 UTC close approach of 2015 AH. Catalogue miss distance 96.0 LD · 3.69 × 10⁷ km. The curve is the geocentric path from 2028-01-02 to 2028-01-08, 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 96.0 LD · 3.69 × 10⁷ km 2028-01-05 18:01 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-01-05 18:01 UTC close approach of 2015 AH. Catalogue miss distance 96.0 LD · 3.69 × 10⁷ km. The curve is the geocentric path from 2028-01-02 to 2028-01-08, 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
2028-01-05 18:01:00 Earth 0.2466 AU 96.0 LD 7.4 km/s
2028-06-10 14:34:00 Earth 0.2483 AU 96.6 LD 10.1 km/s
2033-12-15 11:18:00 Earth 0.0569 AU 22.2 LD 11.2 km/s
2034-07-26 15:01:00 Earth 0.3535 AU 137.6 LD 11.3 km/s
2035-04-12 13:13:00 Earth 0.3172 AU 123.4 LD 16.7 km/s
2039-12-29 03:48:00 Earth 0.3653 AU 142.2 LD 20 km/s
2040-09-14 23:21:00 Earth 0.3669 AU 142.8 LD 9.6 km/s
2041-05-09 01:33:00 Earth 0.1643 AU 63.9 LD 9.9 km/s
2046-12-11 18:02:00 Earth 0.1533 AU 59.7 LD 7.8 km/s
2047-06-28 10:36:00 Earth 0.2943 AU 114.5 LD 10.7 km/s

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

Sources