Where is it now
- Distance from Sun
- 2.64 AU
- True anomaly
- 294.22°
- Distance from Earth
- 3.403 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.
In the sky
- Right ascension
- 11h 59m 16s
- Declination
- +10° 56′ 31″
- Constellation
- Virgo
- Distance from Earth
- 3.4 AU
- Elongation from the Sun
- 34.38° — 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
- 2.721 AU
- Eccentricity
- 0.0639
- Inclination
- 13.09°
- Orbital period
- 4.49 years
- Perihelion
- 2.547 AU
- Aphelion
- 2.895 AU
- Longitude of ascending node
- 83.91°
- Argument of periapsis
- 145.36°
- Epoch · J2000
- 2461200.5
- Orbit class · MBA
- Main-belt asteroid
- Earth MOID · 600.9 LD
- 1.5439 AU
- Tisserand (Jupiter)
- 3.318
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 12,333
- Data arc
- 140.5 years
- First observed
- 5 October 1885
- Last observed
- 5 April 2026
- Residual RMS
- 0.25 ″
- Solution · Otto Matic
- 5 June 2026
Physical properties
- Mean radius
- 80 km
- Rotation period
- 18.56 hours
Visual & observation
- Geometric albedo
- 0.036
- Absolute magnitude (H)
- 8.5
- Colour index (B–V)
- 0.7
- Spectral type (SMASS)
- Ch
- Spectral type (Tholen)
- C
- Colour index (U–B)
- 0.41
Discovery & classification
- Discovered by
- Borrelly, A.
- Discovery date
- 8 June 1875
- Discovery site
- Marseilles
Also known as 146 · A875 LC · 1950 CY
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB