180 Garumna

This article is about the asteroid. For the insect: Garumna and the Latin name of the river in France, see Garonne.

180 Garumna
3D convex shape model of 180 Garumna
Discovery
Discovered byJ. Perrotin
Discovery date29 January 1878
Designations
(180) Garumna
Pronunciation/ɡəˈrʌmnə/[1]
Main belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc96.73 yr (35331 d)
Aphelion3.1722 AU (474.55 Gm)
Perihelion2.2739 AU (340.17 Gm)
2.7231 AU (407.37 Gm)
Eccentricity0.16494
4.49 yr (1641.3 d)
301.92°
0° 13m 9.624s / day
Inclination0.86595°
312.18°
175.87°
Earth MOID1.28761 AU (192.624 Gm)
Jupiter MOID1.89216 AU (283.063 Gm)
TJupiter3.338
Physical characteristics
23.866 h (0.9944 d)
S[3]
10.31

180 Garumna is a main belt asteroid that was discovered by the French astronomer Henri Joseph Perrotin on January 29, 1878.[4] Its name comes from the ancient Latin name for the Garonne River in France. In the Tholen classification system, it is categorized as a stony S-type asteroid, while the Bus asteroid taxonomy system lists it with the Sr sub-type.[3]

The rotation period of this asteroid is very nearly equal to that of the rotation of the Earth. This means that only a small portion of the light curve can be observed from any one location, requiring measurements from multiple sites in order to build a complete curve. In 2012, this mission was accomplished, giving a period of 23.866 ± 0.001 hours with a brightness variation of 0.42 ± 0.02 in magnitude. Allowing for a margin of error and changes in phase angle, this finding agrees with previous measurements made in 2008 and 2011.[5]

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ Cite error: The named reference JPL was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference DeMeo2009 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference IAU_MPC was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Pilcher2012 was invoked but never defined (see the help page).