4 Vesta

Frae Wikipedia
Lowp tae: navigation, rake
4 Vesta Modren astrological seembol o Vesta
Vesta full mosaic.jpg
Composite greyscale image o Vesta taken bi the Dawn spacecraft.
Discovery
Discovered bi Heinrich Wilhelm Olbers
Discovery date 29 March 1807
Designations
Pronunciation /ˈvɛstə/
Named efter Vesta
Minor planet category Main belt (Vesta faimily)
Adjective Vestan, Vestian
Orbital characteristics[2]
Epoch 2010-Jul-23 (JD 2455400.5)
Aphelion 2.571 AU (384.72 Gm)
Perihelion 2.1526 AU (321.82 Gm)
Semi-major axis 2.362 AU (353.268 Gm)
Eccentricity 0.08862
Orbital period 3.63 a (1325.85 d)
Average orbital speed 19.34 km/s
Mean anomaly 307.80°
Inclination 7.134° tae Ecliptic
5.56° tae Invariable plane[1]
Longitude o ascendin node 103.91°
Argument o perihelion 149.84°
Satellites None
Proper orbital elements[3]
Proper semi-major axis 2.3615126 AU
Proper eccentricity 0.0987580
Proper inclination 6.3923416°
Proper mean motion 99.188833 deg / yr
Proper orbital period 3.62944 yr
(1325.653 d)
Precession o perihelion 36.872897 arcsec / yr
Precession o the ascendin node −39.597863 arcsec / yr
Pheesical characteristics
Dimensions (572.6 × 557.2 × 446.4) ± 0.2 km[4]
525.4±0.2 km (mean)
Mass (2.59076±0.00001)×1020 kg[4]
Mean density 3.456 g/cm³[4]
Equatorial surface gravity 0.25 m/s2
0.025 g
Escape velocity 0.36  km/s
Rotation period 0.2226 d (5.342 h)[2][5]
Albedo 0.423 (geometric)[6]
Temperatur min: 85 K (−188 °C)
max: 270 K (−3 °C)[7]
Spectral type V-type asteroid[2][8]
Apparent magnitude 5.1[9] to 8.48
Absolute magnitude (H) 3.20[2][6]
Angular diameter 0.70″ tae 0.22″

Vesta, minor-planet designation 4 Vesta, is ane o the lairgest asteroids in the Solar Seestem, wi a mean diameter o 525 kilometres (326 mi).[4]

References[eedit | eedit soorce]

  1. "The MeanPlane (Invariable plane) of the Solar System passing through the barycenter". 3 Aprile 2009. Retrieved 10 Aprile 2009.  (produced with Solex 10 written by Aldo Vitagliano; see also Invariable plane)
  2. 2.0 2.1 2.2 2.3 "JPL Small-Body Database Browser: 4 Vesta". Retrieved 1 Juin 2008. 
  3. "AstDyS-2 Vesta Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. Retrieved 1 October 2011. 
  4. 4.0 4.1 4.2 4.3 Russell, C. T.; et al. (2012). "Dawn at Vesta: Testing the Protoplanetary Paradigm". Science. 336 (6082): 684. Bibcode:2012Sci...336..684R. doi:10.1126/science.1219381. 
  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 original on 28 Januar 2007. Retrieved 2013-12-26. 
  6. 6.0 6.1 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (2004). "Infra-Red Astronomy Satellite (IRAS) Minor Planet Survey. IRAS-A-FPA-3-RDR-IMPS-V6.0.". NASA Planetary Data System. Archived frae the original on 11 Mairch 2007. Retrieved 15 Mairch 2007. 
  7. Mueller, T. G.; Metcalfe, L. (2001). "ISO and Asteroids" (PDF). European Space Agency (ESA) bulletin. 108: 38. 
  8. Neese, C.; Ed. (2005). "Asteroid Taxonomy EAR-A-5-DDR-TAXONOMY-V5.0". NASA Planetary Data System. Archived frae the original on 11 Mairch 2007. Retrieved 2013-12-25. 
  9. Menzel, Donald H.; and Pasachoff, Jay M. (1983). A Field Guide to the Stars and Planets (2nd ed.). Boston, MA: Houghton Mifflin. p. 391. ISBN 0-395-34835-8.