8 Flora

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8 Flora 8 Flora Astronomical Symbol.svg
8Flora (Lightcurve Inversion).png
A three-dimensional model o 8 Flora based on its licht curve.
Discovery
Discovered bi J.R. Hind
Discovery date October 18, 1847
Designations
Pronunciation /ˈflɔərə/
Named after
Flōra
none
Main belt (Flora faimily)
Adjectives Florian
Orbital chairactereestics[1]
Epoch November 26, 2005 (JD 2453700.5)
Aphelion 380.850 Gm (2.546 AU)
Perihelion 277.995 Gm (1.858 AU)
329.422 Gm (2.202 AU)
Eccentricity 0.1561
1193.549 d (3.27 a)
19.95 km/s
156.401°
Inclination 5.886°
111.011°
285.128°
Proper orbital elements[2]
2.2014283 AU
0.1448717
5.5736218°
110.205216 deg / yr
3.26663 yr
(1193.138 d)
Precession o perihelion
32.016655 arcsec / yr
Precession of the ascending node
−35.510731 arcsec / yr
Pheesical chairacteristics
Dimensions 136×136×113 km[3]
128 km (mean)
145×145×120 km[4]
Mass 8.47×1018 kg[3]
4.3×1018 kg[5][6]
Mean density
3.13±1.43 g/cm³[3]
~3.3 g/cm³[7]
~0.045 m/s²
~0.081 km/s
0.533 d (12.799 h)[1]
Albedo 0.243 (geometric)[1]
Temperatur ~180 K
max: 276 K (+3 °C)
Spectral teep
S-type asteroid[1]
7.9[8] to 11.6
6.49[1]
0.21" to 0.053"

8 Flora is a lairge, bricht main-belt asteroid.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 1.3 1.4 "JPL Small-Body Database Browser: 8 Flora". 2008-04-14 last obs. Retrieved 2008-11-27.  Check date values in: |date= (help)
  2. "AstDyS-2 Flora Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. Retrieved 2011-10-01. 
  3. 3.0 3.1 3.2 Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Retrieved 2008-11-27. 
  4. Torppa, J.; et al. (2003). "Shapes and rotational properties of thirty asteroids from photometric data" (PDF). Icarus. 164 (2): 346. Bibcode:2003Icar..164..346T. doi:10.1016/S0019-1035(03)00146-5. 
  5. Michalak, G. (2001). "Determination of asteroid masses". Astronomy & Astrophysics. 374 (2): 703–711. Bibcode:2001A&A...374..703M. doi:10.1051/0004-6361:20010731. Retrieved 2008-11-10. 
  6. Michalak2001 assumed masses of perturbing asteroids used in calculations of perturbations of the test asteroids.
  7. Density (D=Mass/Volume=4.376/1.317=~3.3) calculated using JPL radius of 68km and the Michalak2001 assumed mass of 4.376E+18.
  8. Donald H. Menzel and Jay M. Pasachoff (1983). A Field Guide to the Stars and Planets (2nd ed.). Boston, MA: Houghton Mifflin. p. 391. ISBN 0-395-34835-8.