88611 Teharonhiawako
| Discovery | |
|---|---|
| Discovered by | Deep Ecliptic Survey |
| Discovery date | 20 August 2001 |
| Designations | |
| MPC designation | 88611 Teharonhiawako |
| Pronunciation | Mohawk: [dɛhaɺũhjáːɰaɡo] |
| 2001 QT297 | |
| cubewano[1] | |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 4463 days (12.22 yr) |
| Aphelion | 45.235 AU (6.7671 Tm) |
| Perihelion | 42.454 AU (6.3510 Tm) |
| 43.845 AU (6.5591 Tm) | |
| Eccentricity | 0.031712 |
| 290.32 yr (106041 d) | |
| 158.44° | |
| Inclination | 2.5834° |
| 304.78° | |
| 236.43° | |
| Known satellites | Sawiskera |
| Earth MOID | 41.4583 AU (6.20207 Tm) |
| Jupiter MOID | 37.0149 AU (5.53735 Tm) |
| Physical characteristics | |
| Dimensions | 220+41 −44 km (combinded) 178+33 −36 km (primary) 129+24 −26 km (secondary)[3] |
| Mass | 2.445×1018 kg[4] |
|
Mean density
|
1.15+0.87 −0.91 g/cm3[3] |
|
Sidereal rotation period
|
4.7526±0.0007 h[5] |
| 0.145+0.086 −0.045[3] |
|
| 6.00±0.13,[5] 5.8[2] | |
88611 Teharonhiawako is a trans-Neptunian object and a member of the Kuiper belt, measuring about 220 km in diameter. It is a binary object, with a large companion named Sawiskera (pronounced [zaɰískɛɺa] in Mohawk,[6] formally designed (88611) Teharonhiawako I Sawiskera), which at 126 km in diameter is about two-thirds the size of its primary.[7]
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.[7]
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
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Approximately zah-WEE-ske-lə[citation needed]
- ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
External links
- Orbital simulation from JPL (Java) / Ephemeris
- 88611 Teharonhiawako at the JPL Small-Body Database
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