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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.

3 Juno Juno symbol.svg
Juno 4 wavelengths.jpg
Juno seen at fower wavelengths. A lairge crater appears dark at 934 nm.
Discovery
Discovered bi Karl Ludwig Harding
Discovery date September 1, 1804
Designations
Pronunciation /ˈn/
Named after
Juno (Laitin: Iūno)
none
Main belt (Juno clump)
Adjectives Junonian /ˈnniən/[1]
Orbital chairactereestics[2]
Epoch November 30, 2008 (JD 2454800.5)
Aphelion 3.356 AU (502.050 Gm)
Perihelion 1.988 AU (297.40 Gm)
2.672 AU (399.725 Gm)
Eccentricity 0.2559
4.37 a (1595.4 d)
17.93 km/s
256.8°
Inclination 12.968°
169.96°
247.93°
Proper orbital elements[3]
2.6693661 AU
0.2335060
13.2515192°
82.528181 deg / yr
4.36215 yr
(1593.274 d)
Precession o perihelion
43.635655 arcsec / yr
Precession of the ascending node
−61.222138 arcsec / yr
Pheesical chairacteristics
Dimensions (320×267×200)±6 km[4]
(233 km)[2]
Mass 2.67 ×1019 kg[4]
Mean density
2.98 ± 0.55 g/cm³[4]
0.12 m/s²
0.18 km/s
7.21 hr[2] (0.3004 d)[5]
Albedo 0.238 (geometric)[2][6]
Temperatur ~163 K
max: 301 K (+28°C)[7]
Spectral teep
S-type asteroid[2][8]
7.4[9][10] to 11.55
5.33[2][6]
0.30" tae 0.07"

ReferencesEedit

  1. "Junonian". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005.  (Subscription or UK public library membership required.)
  2. 2.0 2.1 2.2 2.3 2.4 2.5 "JPL Small-Body Database Browser: 3 Juno". 2008-07-30 last obs. Retrieved 2008-11-01.  Check date values in: |date= (help)
  3. "AstDyS-2 Juno Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. Retrieved 2011-10-01. 
  4. 4.0 4.1 4.2 Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Retrieved 2008-12-03. 
  5. Harris, A. W.; Warner, B. D.; Pravec, P.; Eds. (2006). "Asteroid Lightcurve Derived Data. EAR-A-5-DDR-DERIVED-LIGHTCURVE-V8.0". NASA Planetary Data System. Archived frae the oreeginal on 2007-01-28. Retrieved 2007-03-15. 
  6. 6.0 6.1 Davis, D. R.; Neese, C., Eds. (2002). "Asteroid Albedos. EAR-A-5-DDR-ALBEDOS-V1.1". NASA Planetary Data System. Archived frae the oreeginal on 2007-01-25. Retrieved 2007-02-18. 
  7. Lim, Lucy F.; McConnochie, Timothy H.; Bell, James F.; Hayward, Thomas L. (2005). "Thermal infrared (8-13 µm) spectra of 29 asteroids: the Cornell Mid-Infrared Asteroid Spectroscopy (MIDAS) Survey". Icarus. 173 (2): 385–408. Bibcode:2005Icar..173..385L. doi:10.1016/j.icarus.2004.08.005. 
  8. Neese, C.; Ed. (2005). "Asteroid Taxonomy.EAR-A-5-DDR-TAXONOMY-V5.0". NASA Planetary Data System. Archived frae the oreeginal on 2006-09-05. Retrieved 2013-12-24. 
  9. "AstDys (3) Juno Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2010-06-26. 
  10. "Bright Minor Planets 2005". Minor Planet Center. Archived frae the oreeginal on 2010-08-27.