163 Erigone

163 Erigone
3D convex shape model of 163 Erigone
Discovery
Discovered byJ. Perrotin
Discovery siteToulouse
Discovery date26 April 1876
Designations
(163) Erigone
Pronunciation/ɪˈrɪɡəniː/[1]
Named after
Erigone
A876 HC; 1892 RA;
1957 OT; 2017 YH23
Main belt (Erigone)
AdjectivesErigonian /ɛrɪˈɡoʊniən/[2] Erigonean /ɛrɪɡəˈniːən/
Orbital characteristics[3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc123.56 yr (45131 d)
Aphelion2.8188 AU (421.69 Gm)
Perihelion1.9161 AU (286.64 Gm)
2.3675 AU (354.17 Gm)
Eccentricity0.19064
3.64 yr (1330.5 d)
280.031°
0° 16m 14.052s / day
Inclination4.8148°
160.166°
298.260°
Earth MOID0.93686 AU (140.152 Gm)
Jupiter MOID2.3628 AU (353.47 Gm)
TJupiter3.518
Physical characteristics
Dimensions72.63±5.7 km[3]
72.70 ± 1.95 km[4]
Mass(2.01 ± 0.68) × 1018 kg[4]
Mean density
9.99 ± 3.45 g/cm3[4]
16.136 h (0.6723 d)[5]
0.0546±0.010[3]
0.0428 ± 0.0092 [6]
C[6] (Tholen)
9.47,[3] 9.48[6]

163 Erigone is an asteroid from the asteroid belt and the namesake of the Erigone family of asteroids that share similar orbital elements and properties. It was discovered by French astronomer Henri Joseph Perrotin on April 26, 1876, and named after one of the two Erigones in Greek mythology. This asteroid is orbiting the Sun at a distance of 2.37 AU with a period of 3.643 years and an eccentricity (ovalness) of 0.19. The orbital plane is inclined at an angle of 4.8° to the plane of the ecliptic.[3]

Photometric measurements taken in 2014 were used to construct a lightcurve that demonstrated a rotation period of 16.136±0.001 h with an amplitude of 0.32±0.02 in magnitude.[5] Erigone is a relatively large and dark asteroid with an estimated size of 73 km.[4] Based upon its spectrum, it is classified as a C-type asteroid,[6] which indicates that it probably has a carbonaceous composition. It is the largest member of the eponymously named Erigone collisional family.[7]

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ Publius Ovidius Naso, John Gower (1640) Ovids Festivalls
  3. ^ a b c d e "163 Erigone". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
  4. ^ a b c d Cite error: The named reference Carry2012 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Pilcher_et_al_2014 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Pravec2012 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Morate_et_al_2016 was invoked but never defined (see the help page).