88611 Teharonhiawako
| Discovery | |
|---|---|
| Discovered by | Deep Ecliptic Survey |
| Discovery date | August 20, 2001 |
| Designations | |
Designation | 88611 Teharonhiawako |
| Pronunciation | Mohawk: Template:IPA-moh |
| 2001 QT297 | |
| 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 Template:IPA-moh 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 Teharonhia:wako, 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
- ^ Marc W. Buie (2005-07-11). "Orbit Fit and Astrometric record for 88611". SwRI (Space Science Department). Retrieved 2008-09-28.
- ^ a b c Wm. Robert Johnston (6 May 2007). "(88611) Teharonhiawako and Sawiskera". Johnston's Archive. Retrieved 2008-09-28.
- ^ 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.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ 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.
- ^ Approximately zah-WEE-ske-lə[citation needed]
External links
- Orbital simulation from JPL (Java) / Ephemeris
- 88611 Teharonhiawako at the JPL Small-Body Database
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