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
MPC designation
(165) Loreley
Pronunciation
/ˈlɔːrəlaɪ/[1]
Alternative designations
A876 PA; 1948 QS; 1959 PB; 1960 WG
Minor planet category
main belt
Orbital characteristics[2]
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)
Semi-major axis
3.1251 AU (467.51 Gm)
Eccentricity
0.084887
Orbital period (sidereal)
5.52 yr (2017.9 d)
Mean anomaly
125.88°
Mean motion
0° 10m 42.24s / day
Inclination
11.224°
Longitude of ascending node
302.53°
Argument of perihelion
347.29°
Earth MOID
1.84454 AU (275.939 Gm)
Jupiter MOID
1.81383 AU (271.345 Gm)
TJupiter
3.180
Physical characteristics
Dimensions
180.083±2.064 km[2] 164.92 ± 8.14 km[3]
Mass
(1.91 ± 0.19) × 1019 kg[3]
Mean density
8.14 ± 1.46 g/cm3[3]
Synodic rotation period
7.226 h (0.3011 d)[2] 7.22667 h[4]
Geometric albedo
0.0642±0.004
Absolute magnitude (H)
7.65,[2] 7.76[5]
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.[4][6]
Between 2003 and 2021, 165 Loreley has been observed to occult thirteen stars.
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.[7]
^"Lorelei". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
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165Loreley 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...
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