Where is it now
- Distance from Sun
- 2.342 AU
- True anomaly
- 271.81°
- Distance from Earth
- 1.589 AU
- As of
- 11 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
- 22h 09m 06s
- Declination
- -20° 05′ 25″
- Constellation
- Aquarius
- Distance from Earth
- 1.59 AU
- Elongation from the Sun
- 127.62° — well clear of the Sun
Favours the southern hemisphere; low or below the horizon from far north.
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
- 2.387 AU
- Eccentricity
- 0.1225
- Inclination
- 5.58°
- Orbital period
- 3.69 years
- Perihelion
- 2.094 AU
- Aphelion
- 2.679 AU
- Longitude of ascending node
- 68.87°
- Argument of periapsis
- 5.93°
- Epoch · J2000
- 2461200.5
- Orbit class · MBA
- Main-belt asteroid
- Earth MOID · 431.4 LD
- 1.1085 AU
- Tisserand (Jupiter)
- 3.518
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 4,122
- Data arc
- 176.2 years
- First observed
- 31 July 1849
- Last observed
- 4 October 2025
- Residual RMS
- 0.41 ″
- Solution · Otto Matic
- 11 March 2026
Physical properties
- Mean radius
- 95 km
- Rotation period
- 5.08 hours
Visual & observation
- Geometric albedo
- 0.118
- Absolute magnitude (H)
- 6.18
- Colour index (B–V)
- 0.86
- Spectral type (Tholen)
- S
- Colour index (U–B)
- 0.5
Discovery & classification
- Discovered by
- Graham, A.
- Discovery date
- 25 April 1848
- Discovery site
- Markree
Also known as 9 · A848 HA · 1974 QU2
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)
- orbital elements: JPL SBDB