165 Loreley

From Wikipedia, the free encyclopedia
Jump to: navigation, search
165 Loreley
165Loreley (Lightcurve Inversion).png
A three-dimensional model of 165 Loreley based on its light curve.
Discovered by C. H. F. Peters
Discovery date August 9, 1876
main belt
Orbital characteristics[1]
Aphelion 3.385 AU
Perihelion 2.870 AU
3.128 AU
5.53 a
Inclination 11.24°
Physical characteristics
Dimensions 164.92 ± 8.14[2] km
Mass (1.91 ± 0.19) × 1019[2] kg
Mean density
8.14 ± 1.46[2] g/cm3
7.22667[3] h
Albedo 0.078

165 Loreley is a main-belt asteroid that was discovered by C. H. F. Peters on August 9, 1876, in Clinton, New York and named after the Lorelei, a figure in German folklore.

In the late 1990s, a network of astronomers worldwide gathered light curve data that was ultimately used to derive the spin states and shape models of 10 new asteroids, including (165) Loreley. The light curve of this asteroid varies by no more than 0.2 in magnitude, while the derived shape model shows multiple flat spots on the surface.[3][5]

One stellar occultation by Loreley has been observed, on July 20, 2003.

The asteroid has an oblate shape with a size ratio of 1.26 ± 0.08 between the major and minor axes, as determined from the W. M. Keck Observatory.[6]


  1. ^ Yeomans, Donald K., "165 Loreley", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-25. 
  2. ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009.  See Table 1.
  3. ^ a b Ďurech, J.; et al. (April 2007), "Physical models of ten asteroids from an observers", Astronomy and Astrophysics 465 (1): 331–337, Bibcode:2007A&A...465..331D, doi:10.1051/0004-6361:20066347. 
  4. ^ Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 34: 113–119, Bibcode:2007MPBu...34..113W. 
  5. ^ Durech, J.; et al. (November 2006), "Asteroid brightness and geometry", VizieR On-line Data Catalog: J/A+A/465/331, Bibcode:2006yCat..34650331D. 
  6. ^ Marchis, F.; et al. (November 2006), "Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey", Icarus 185 (1): 39–63, Bibcode:2006Icar..185...39M, doi:10.1016/j.icarus.2006.06.001, PMC 2600456, PMID 19081813.