Where is it now
- Distance from Sun
- 2.878 AU
- True anomaly
- 353.97°
- Distance from Earth
- 2.609 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
- 07h 47m 19s
- Declination
- +32° 01′ 38″
- Constellation
- Gemini
- Distance from Earth
- 2.61 AU
- Elongation from the Sun
- 95.37° — 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
- 3.136 AU
- Eccentricity
- 0.0828
- Inclination
- 12.12°
- Orbital period
- 5.55 years
- Perihelion
- 2.877 AU
- Aphelion
- 3.396 AU
- Longitude of ascending node
- 39.86°
- Argument of periapsis
- 59.25°
- Epoch · J2000
- 2461200.5
- Orbit class · MBA
- Main-belt asteroid
- Earth MOID · 745.2 LD
- 1.9148 AU
- Tisserand (Jupiter)
- 3.172
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 11,871
- Data arc
- 145.4 years
- First observed
- 8 September 1880
- Last observed
- 8 February 2026
- Residual RMS
- 0.22 ″
- Solution · Otto Matic
- 5 June 2026
Physical properties
- Mean radius
- 29 km
- Rotation period
- 6.25 hours
Visual & observation
- Geometric albedo
- 0.257
- Absolute magnitude (H)
- 8.36
- Colour index (B–V)
- 0.88
- Spectral type (SMASS)
- S
- Spectral type (Tholen)
- I
- Colour index (U–B)
- 0.45
Discovery & classification
- Discovered by
- Henry, P. P.
- Discovery date
- 2 November 1875
- Discovery site
- Paris
Also known as 152 · A875 VB
Close approaches 8 on record
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2059-04-16 20:15:00 | Juptr | 1.9957 AU | 776.7 LD | 5.1 km/s |
| 2069-10-06 12:45:00 | Juptr | 1.8901 AU | 735.6 LD | 3.8 km/s |
| 2080-01-28 00:11:00 | Juptr | 1.9705 AU | 766.9 LD | 2.5 km/s |
| 2153-08-12 00:58:00 | Juptr | 1.908 AU | 742.5 LD | 4.7 km/s |
| 2164-01-10 14:42:00 | Juptr | 1.9137 AU | 744.8 LD | 3.1 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