User:MRaimondi
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[edit] ~HOLA~
Stuff I like
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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.
Picture of the day | |
United States Army forces target railway cars south of Wonsan, North Korea, an east coast port city, during the Korean War. Trains in North Korea were targets of attack by U.S. and other U.N. forces, so much so that both military and civilian trains often had to wait out the daylight hours in tunnels. Photo credit: United States Army |
ERIS IS AWESOMER THAN MOST THINGS EXCEPT A FEW .
Hubble Space Telescope. |
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Discovery
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Discovered by | M. E. Brown, C. A. Trujillo, D. L. Rabinowitz[1] |
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Discovery date | October 21, 2003[1] | ||||||
Designations
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MPC designation | 136199 Eris | ||||||
Alternative names | 2003 UB313[2] | ||||||
Minor planet category |
dwarf planet TNO (scattered disc object) |
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Epoch March 6, 2006 (JD 2453800.5)[3] |
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Aphelion | 97.56 AU 14.60×109km |
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Perihelion | 37.77 AU 5.65×109 km |
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Semi-major axis | 67.6681 AU 10.12×109 km |
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Eccentricity | 0.44177 | ||||||
Average orbital speed | 3.436 km/s | ||||||
Mean anomaly | 197.63427° | ||||||
Inclination | 44.187° | ||||||
Longitude of ascending node | 35.8696° | ||||||
Satellites | 1 | ||||||
Physical characteristics
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Equatorial radius | 1,200 ± 50 km 0.19 Earths |
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Mass | (1.66 ± 0.02)×1022 kg[4] | ||||||
Mean density | 2.3 g/cm3 | ||||||
Equatorial surface gravity | ~0.8 m/s2 | ||||||
Sidereal rotation period |
> 8 h? | ||||||
Albedo | 0.86 ± 0.07 | ||||||
Surface temp. (approx) |
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Apparent magnitude | 18.7 | ||||||
Absolute magnitude | −1.12 ± 0.01 |