165 Loreley

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165 Loreley
165Loreley (Lightcurve Inversion).png
A three-dimensional model of 165 Loreley based on its light curve.
Discovery
Discovered by C. H. F. Peters
Discovery date 9 August 1876
Designations
main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 139.51 yr (50957 d)
Aphelion 3.3904 AU (507.20 Gm)
Perihelion 2.8599 AU (427.83 Gm)
3.1251 AU (467.51 Gm)
Eccentricity 0.084887
5.52 yr (2017.9 d)
125.88°
0° 10m 42.24s / day
Inclination 11.224°
302.53°
347.29°
Earth MOID 1.84454 AU (275.939 Gm)
Jupiter MOID 1.81383 AU (271.345 Gm)
Jupiter Tisserand parameter 3.180
Physical characteristics
Dimensions 154.78±4.8 km[1]
164.92 ± 8.14 km[2]
Mass (1.91 ± 0.19) × 1019 kg[2]
Mean density
8.14 ± 1.46 g/cm3[2]
7.226 h (0.3011 d)[1]
7.22667 h[3]
0.0642±0.004
7.65,[1] 7.76[4]

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]

References[edit]

  1. ^ a b c d Yeomans, Donald K., "165 Loreley", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016. 
  2. ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336free to read, 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), pp. 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", The Minor Planet Bulletin, 34, pp. 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), pp. 39–63, Bibcode:2006Icar..185...39M, doi:10.1016/j.icarus.2006.06.001, PMC 2600456free to read, PMID 19081813. 

External links[edit]