88611 Teharonhiawako

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88611 Teharonhiawako
Discovery
Discovered by Deep Ecliptic Survey
Discovery date August 20, 2001
Designations
MPC designation 88611 Teharonhiawako
Pronunciation Mohawk [tɛhaˌɺũhiaɰáːɡo]
2001 QT297
Minor planet category cubewano[1]
Orbital characteristics
Aphelion 45.280 AU
Perihelion 42.899 AU
44.089 AU
Eccentricity 0.027
294.68
141.9°
Inclination 2.6°
304.7°
242.2°
Known satellites Sawiskera
Physical characteristics
Dimensions 176±20 km,[2]
161±??[3]
Mass 2.445×1018 kg[4]
Mean density
0.5-2.0 g/cm3
Albedo 0.16–0.39[4]
5.5

88611 Teharonhiawako is a trans-Neptunian object and a member of the Kuiper belt, measuring 156–196 km in diameter. It is a binary object, with a large companion named Sawiskera (pronounced [zaɰískɛɺa] in Mohawk,[5] formally designed (88611) Teharonhiawako I Sawiskera), which at 108–136 km in diameter is about two-thirds the size of its primary.[2]

Teharonhiawako was discovered on August 20, 2001, by the Deep Ecliptic Survey, and Sawiskera was identified a month later. The primary is named after Teharonhiawako, a god of maize in the Iroquois creation myth, while the secondary is named after his evil twin brother Sawiskera. The objects were named in 2007.[2]

Sawiskera's orbit has the following parameters: semi-major-axis—27670 ± 120 km, period—828.76 ± 0.22 days, eccentricity—0.2494 ± 0.0021 and inclination—144.42 ± 0.35°(retrograde). The total system mass is about 2.4 × 1018 kg.[4]

References[edit]

  1. ^ Marc W. Buie (2005-07-11). "Orbit Fit and Astrometric record for 88611". SwRI (Space Science Department). Retrieved 2008-09-28. 
  2. ^ a b c Wm. Robert Johnston (6 May 2007). "(88611) Teharonhiawako and Sawiskera". Johnston's Archive. Retrieved 2008-09-28. 
  3. ^ Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 28 September 2008. Retrieved 2008-09-28. 
  4. ^ a b c Grundy, W. M.; Noll, K. S.; Nimmo, F.; Roe, H. G.; Buie, M. W.; Porter, S. B.; Benecchi, S. D.; Stephens, D. C.; Levison, H. F.; Stansberry, J. A. (2011). "Five new and three improved mutual orbits of transneptunian binaries" (pdf). Icarus 213 (2): 678. arXiv:1103.2751. Bibcode:2011Icar..213..678G. doi:10.1016/j.icarus.2011.03.012.  edit
  5. ^ Approximately zah-WEE-ske-lə[citation needed]

External links[edit]