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Hello, My name is Marcus. I am 15 and I go to the Gwinnett School of Mathematics, Science, and Technology. I have used wikipedia extensively. I used to edit alot but... I forgot my old account. Now, i am just getting back into wikipedia. I still have alot to learn and I want to continue improving wikipedia.
The red-tailed hawk (Buteo jamaicensis) is a bird of prey that breeds throughout most of North America, from the interior of Alaska and northern Canada to as far south as Panama and the West Indies. It occupies a wide range of habitats and altitudes, including deserts, grasslands, forests, agricultural fields, and urban areas. Red-tailed hawks are opportunistic generalists and their diet is variable. In North America, they are most often predators of small mammals such as rodents. Prey that is terrestrial and at least partially diurnal is preferred, so types such as ground squirrels are preferred where they naturally occur. The bird is legally protected in Canada and Mexico, and in the United States by the Migratory Bird Treaty Act of 1918. This red-tailed hawk in flight was photographed at the Sacramento National Wildlife Refuge in California.Photograph credit: Frank Schulenburg
 ERIS IS AWESOMER THAN MOST THINGS EXCEPT A FEW . Hubble Space Telescope. | |||||||||
| Discovery | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Discovered by | M. E. Brown, C. A. Trujillo, D. L. Rabinowitz[1] | ||||||||
| Discovery date | October 21, 2003[1] | ||||||||
| Designations | |||||||||
Designation | 136199 Eris | ||||||||
| 2003 UB313[2] | |||||||||
| dwarf planet TNO (scattered disc object) | |||||||||
| Orbital characteristics | |||||||||
| Epoch March 6, 2006 (JD 2453800.5)[3] | |||||||||
| Aphelion | 97.56 AU 14.60×109km | ||||||||
| Perihelion | 37.77 AU 5.65×109 km | ||||||||
| 67.6681 AU 10.12×109 km | |||||||||
| Eccentricity | 0.44177 | ||||||||
Average orbital speed | 3.436 km/s | ||||||||
| 197.63427° | |||||||||
| Inclination | 44.187° | ||||||||
| 35.8696° | |||||||||
| Known satellites | 1 | ||||||||
| Physical characteristics | |||||||||
Equatorial radius | 1,200 ± 50 km 0.19 Earths | ||||||||
| Mass | (1.66 ± 0.02)×1022 kg[4] | ||||||||
Mean density | 2.3 g/cm3 | ||||||||
| ~0.8 m/s2 | |||||||||
| > 8 h? | |||||||||
| Albedo | 0.86 ± 0.07 | ||||||||
| |||||||||
| 18.7 | |||||||||
| −1.12 ± 0.01 | |||||||||
- ^ a b Staff (May 1, 2007). "Discovery Circumstances: Numbered Minor Planets". IAU: Minor Planet Center. Retrieved 2007-05-05.
- ^ Staff (February 29, 2004). "Minor Planet Designations". IAU: Minor Planet Center. Retrieved 2007-05-05.
- ^ Asteroid Observing Services
- ^ M.E. Brown and E.L. Schaller (2007). "The Mass of Dwarf Planet Eris". Science. 316 (5831): 1585. doi:10.1126/science.1139415.