Juno, minor-planet designation 3 Juno in the Minor Planet Center catalogue seestem, wis the third asteroid tae be discovered an is ane o the larger main-belt asteroids, bein ane o the twa lairgest stany (S-type) asteroids, alang wi 15 Eunomia.
asteroid
3 Juno
All data from the card 35
- Discovered bi
- Karl Ludwig Harding
- Discovery date
- September 1, 1804
- Named after
- Juno (Laitin: Iūno)
- Alternative names
- none
- Minor planet category
- Main belt (Juno clump)
- Adjectives
- Junonian
- Aphelion
- 3.356 AU (502.050 Gm)
- Perihelion
- 1.988 AU (297.40 Gm)
- Semi-major axis
- 2.672 AU (399.725 Gm)
- Eccentricity
- 0.2559
- Orbital period
- 4.37 a (1595.4 d)
- Average orbital speed
- 17.93 km/s
- Mean anomaly
- 256.8°
- Inclination
- 12.968°
- Longitude o ascendin node
- 169.96°
- Argument o perihelion
- 247.93°
- Proper semi-major axis
- 2.6693661 AU
- Proper eccentricity
- 0.2335060
- Proper inclination
- 13.2515192°
- Proper mean motion
- 82.528181 deg / yr
- Proper orbital period
- 4.36215 yr(1593.274 d)
- Precession o perihelion
- 43.635655 arcsec / yr
- Precession of the ascending node
- −61.222138 arcsec / yr
- Dimensions
- (320×267×200)±6 km(233 km)
- Mass
- 2.67 ×1019 kg
- Mean density
- 2.98 ± 0.55 g/cm³
- Surface gravity
- 0.12 m/s²
- Escape velocity
- 0.18 km/s
- Rotation period
- 7.21 hr (0.3004 d)
- Albedo
- 0.238 (geometric)
- Temperatur
- ~163 Kmax: 301 K (+28°C)
- Spectral teep
- S-type asteroid
- Apparent magnitude
- 7.4 to 11.55
- Absolute magnitude (H)
- 5.33
- Angular diameter
- 0.30" tae 0.07"
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