Where is it now
- Distance from Sun
- 2.597 AU
- True anomaly
- 55.66°
- Distance from Earth
- 2.799 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
- 09h 34m 01s
- Declination
- +16° 36′ 22″
- Constellation
- Leo
- Distance from Earth
- 2.79 AU
- Elongation from the Sun
- 68.51° — well clear of the Sun
Favours the northern hemisphere; low or below the horizon from far south.
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
- 2.665 AU
- Eccentricity
- 0.0426
- Inclination
- 2.37°
- Orbital period
- 4.35 years
- Perihelion
- 2.551 AU
- Aphelion
- 2.778 AU
- Longitude of ascending node
- 6.82°
- Argument of periapsis
- 56.89°
- Epoch · J2000
- 2461200.5
- Orbit class · MBA
- Main-belt asteroid
- Earth MOID · 608.6 LD
- 1.5639 AU
- Tisserand (Jupiter)
- 3.381
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 8,009
- Data arc
- 161.5 years
- First observed
- 2 October 1864
- Last observed
- 29 March 2026
- Residual RMS
- 0.33 ″
- Solution · Otto Matic
- 5 June 2026
Physical properties
- Mean radius
- 22 km
- Rotation period
- 8.3 hours
Visual & observation
- Geometric albedo
- 0.223
- Absolute magnitude (H)
- 9.04
- Spectral type (Tholen)
- S
Discovery & classification
- Discovered by
- Tuttle, H. P.
- Discovery date
- 7 April 1862
- Discovery site
- Cambridge
Also known as 73 · A862 GA · 1949 HE1 · 1952 BA · 1954 JG
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB