512245 is an asteroid in the Aten orbit class. Its orbit takes it from 0.79 AU to 1.18 AU from the Sun; one orbit takes 355.4 days. Discovered 2 January 2016 by CSS. Orbit from the JPL solution of 26 March 2026.
Where is it now
- Distance from Sun
- 1.148 AU
- True anomaly
- 153.07°
- Distance from Earth
- 1.342 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 02m 48s
- Declination
- +06° 50′ 21″
- Constellation
- Leo
- Distance from Earth
- 1.34 AU
- Elongation from the Sun
- 56.63° — near the Sun — look low at dusk or dawn
Visible from both hemispheres.
From your location
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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
- 0.982 AU
- Eccentricity
- 0.2003
- Inclination
- 9.18°
- Orbital period
- 355.4 days
- Perihelion
- 0.785 AU
- Aphelion
- 1.179 AU
- Longitude of ascending node
- 302.87°
- Argument of periapsis
- 21.65°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 46.2 LD
- 0.1187 AU
- Tisserand (Jupiter)
- 6.139
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 1,882
- Data arc
- 13.22 years
- First observed
- 3 January 2013
- Last observed
- 26 March 2026
- Residual RMS
- 0.31 ″
- Solution · Otto Matic
- 26 March 2026
Physical properties
- Rotation period
- 4.52 hours
Visual & observation
- Absolute magnitude (H)
- 19.91
Discovery & classification
- Discovered by
- CSS
- Discovery date
- 2 January 2016
- Discovery site
- Catalina
Also known as 2016 AU8
Close approaches 70 on record
Top-down view of the ecliptic, Earth at the centre, for the 2053-12-10 20:07 UTC close approach of 512245. Catalogue miss distance 53.4 LD · 2.05 × 10⁷ km. The curve is the geocentric path from 2053-12-07 to 2053-12-13, 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 |
|---|---|---|---|---|
| 2037-02-11 02:27:00 | Venus | 0.0759 AU | 29.5 LD | 7.6 km/s |
| 2048-10-20 16:25:00 | Venus | 0.0822 AU | 32.0 LD | 8.4 km/s |
| 2053-12-10 20:07:00 | Earth | 0.1372 AU | 53.4 LD | 8.7 km/s |
| 2054-12-28 07:09:00 | Earth | 0.134 AU | 52.1 LD | 6.6 km/s |
| 2056-01-23 12:38:00 | Earth | 0.1805 AU | 70.2 LD | 7 km/s |
| 2058-03-18 18:54:00 | Earth | 0.1987 AU | 77.3 LD | 5.9 km/s |
| 2058-06-15 15:14:00 | Earth | 0.1851 AU | 72.0 LD | 7.1 km/s |
| 2059-05-05 00:02:00 | Earth | 0.1594 AU | 62.0 LD | 7 km/s |
| 2060-06-28 15:23:00 | Venus | 0.1283 AU | 49.9 LD | 10 km/s |
| 2078-12-09 19:52:00 | Venus | 0.1374 AU | 53.5 LD | 7.4 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB