2015 AC44 is an asteroid in the Aten orbit class. Its orbit takes it from 0.8 AU to 1.17 AU from the Sun; one orbit takes 356.8 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 1.165 AU
- True anomaly
- 171.24°
- Distance from Earth
- 1.559 AU
- As of
- 2 November 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.
In the sky
- Right ascension
- 11h 25m 25s
- Declination
- -01° 21′ 51″
- Constellation
- Leo
- Distance from Earth
- 1.56 AU
- Elongation from the Sun
- 48.44° — 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.
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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
- 0.985 AU
- Eccentricity
- 0.1863
- Inclination
- 20.41°
- Orbital period
- 356.8 days
- Perihelion
- 0.801 AU
- Aphelion
- 1.168 AU
- Longitude of ascending node
- 295.73°
- Argument of periapsis
- 26.59°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 57.6 LD
- 0.1481 AU
- Tisserand (Jupiter)
- 6.086
Orbit quality
Orbit poorly determined (uncertainty code 6).
- Observations used
- 24
- Data arc
- 34 days
- First observed
- 14 January 2015
- Last observed
- 17 February 2015
- Residual RMS
- 0.54 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 24.4
Discovery & classification
Close approaches 128 on record
Top-down view of the ecliptic, Earth at the centre, for the 2053-12-27 10:56 UTC close approach of 2015 AC44. Catalogue miss distance 167.7 LD · 6.44 × 10⁷ km. The curve is the geocentric path from 2053-12-24 to 2053-12-30, 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. 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.
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2032-03-07 17:52:00 | Venus | 0.1133 AU | 44.1 LD | 14.1 km/s |
| 2048-10-16 13:09:00 | Venus | 0.1364 AU | 53.1 LD | 14.1 km/s |
| 2053-12-27 10:56:00 | Earth | 0.4308 AU | 167.7 LD | 18.8 km/s |
| 2054-12-27 07:36:00 | Earth | 0.3164 AU | 123.1 LD | 15.5 km/s |
| 2055-12-30 05:39:00 | Earth | 0.219 AU | 85.2 LD | 13 km/s |
| 2057-01-04 06:50:00 | Earth | 0.1572 AU | 61.2 LD | 11.6 km/s |
| 2057-09-05 06:49:00 | Earth | 0.3196 AU | 124.4 LD | 12.2 km/s |
| 2058-01-12 14:53:00 | Earth | 0.1552 AU | 60.4 LD | 11.1 km/s |
| 2058-08-15 02:54:00 | Earth | 0.2642 AU | 102.8 LD | 13 km/s |
| 2059-01-22 11:03:00 | Earth | 0.2 AU | 77.8 LD | 11 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB