173 Ino

From Wikipedia, the free encyclopedia
  (Redirected from (173) Ino)
Jump to: navigation, search
173 Ino
Discovery
Discovered by A. Borrelly
Discovery date 1 August 1877
Designations
MPC designation (173) Ino
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 137.23 yr (50124 d)
Aphelion 3.3150 AU (495.92 Gm)
Perihelion 2.1769 AU (325.66 Gm)
2.7459 AU (410.78 Gm)
Eccentricity 0.20724
4.55 yr (1662.0 d)
177.40°
0° 12m 59.796s / day
Inclination 14.201°
148.24°
228.58°
Earth MOID 1.20178 AU (179.784 Gm)
Jupiter MOID 2.2149 AU (331.34 Gm)
Jupiter Tisserand parameter 3.273
Physical characteristics
Dimensions 154.10±3.5 km[1]
160.07 ± 6.04 km[2]
Mass (4.79 ± 3.11) × 1018 kg[2]
Mean density
2.23 ± 1.47 g/cm3[2]
6.15 h (0.256 d)[1]
6.163 hours[3]
0.0642±0.003
C
7.66,[1] 7.80[4]

173 Ino is a large main-belt asteroid that was discovered by French astronomer Alphonse Borrelly on August 1, 1877, and named after Ino, a queen in Greek mythology. The adjectival form of the asteroid name is Inoan. Categorized as a C-type asteroid from its spectrum, 173 Ino has a dark surface and a primitive carbonaceous composition.

Multiple photometric studies of this asteroid were performed between 1978 and 2002. The combined data gave an irregular, asymmetrical light curve with a period of 6.163 ± 0.005 hours and a brightness variation of 0.10–0.15 in magnitude. The asteroid is rotating in a retrograde direction.[3]

References[edit]

  1. ^ a b c d Yeomans, Donald K., "173 Ino", 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:1203.4336Freely accessible, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009.  See Table 1.
  3. ^ a b Michałowski, T.; et al. (April 2005), "Photometry and models of selected main belt asteroids. II. 173 Ino, 376 Geometria, and 451 Patientia", Astronomy and Astrophysics, 443 (1), pp. 329–335, Bibcode:2005A&A...443..329M, doi:10.1051/0004-6361:20053656. 
  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. 

External links[edit]