Where is it now
- Distance from Sun
- 2.849 AU
- True anomaly
- 346.07°
- Distance from Earth
- 2.576 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
- 06h 56m 20s
- Declination
- +20° 47′ 21″
- Constellation
- Gemini
- Distance from Earth
- 2.57 AU
- Elongation from the Sun
- 95.92° — 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
- 3.408 AU
- Eccentricity
- 0.1677
- Inclination
- 2.12°
- Orbital period
- 6.29 years
- Perihelion
- 2.837 AU
- Aphelion
- 3.98 AU
- Longitude of ascending node
- 204.27°
- Argument of periapsis
- 252.28°
- Epoch · J2000
- 2461200.5
- Orbit class · OMB
- Outer main-belt asteroid
- Earth MOID · 721.6 LD
- 1.8541 AU
- Tisserand (Jupiter)
- 3.121
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 7,538
- Data arc
- 161.9 years
- First observed
- 6 April 1864
- Last observed
- 13 February 2026
- Residual RMS
- 0.34 ″
- Solution · Otto Matic
- 5 June 2026
Physical properties
- Mean radius
- 73 km
- Rotation period
- 9.97 hours
Visual & observation
- Geometric albedo
- 0.058
- Absolute magnitude (H)
- 8
- Colour index (B–V)
- 0.7
- Spectral type (SMASS)
- X
- Spectral type (Tholen)
- P
- Colour index (U–B)
- 0.3
Discovery & classification
- Discovered by
- d'Arrest, H.
- Discovery date
- 21 October 1862
- Discovery site
- Copenhagen
Also known as 76 · A862 UA · A911 OB
Close approaches 13 on record
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2041-03-10 13:02:00 | Juptr | 1.9703 AU | 766.8 LD | 3.1 km/s |
| 2054-08-03 08:16:00 | Juptr | 1.4858 AU | 578.2 LD | 1.2 km/s |
| 2067-12-02 17:48:00 | Juptr | 1.1395 AU | 443.5 LD | 0.3 km/s |
| 2081-03-24 07:53:00 | Juptr | 1.2738 AU | 495.7 LD | 0.8 km/s |
| 2094-09-21 09:32:00 | Juptr | 1.7522 AU | 681.9 LD | 3.2 km/s |
| 2160-12-16 03:16:00 | Juptr | 1.6866 AU | 656.4 LD | 1.9 km/s |
| 2174-05-18 17:06:00 | Juptr | 1.2228 AU | 475.9 LD | 0.5 km/s |
| 2187-08-20 21:24:00 | Juptr | 1.1432 AU | 444.9 LD | 0.4 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)
- 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