User:MRaimondi

~HOLA~

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 Astronomer
The Astronomer is an oil painting on canvas by the Dutch Golden Age artist Johannes Vermeer, completed in 1668. The work depicts an astronomer studying a celestial globe beside a copy of Adriaan Metius's Institutiones Astronomicae Geographicae. Closely related to Vermeer's The Geographer, it is thought to portray the same sitter, possibly Antonie van Leeuwenhoek; a 2017 study showed that both paintings were made from canvas cut from the same bolt. The painting was seized by the Nazis from the Rothschild family during the Second World War, returned to them when the war concluded, and acquired by the French state in 1983. It is now in the collection of the Louvre in Paris.Painting credit: Johannes Vermeer
Eris
Eris (centre) and Dysnomia (left of centre), taken by the Hubble Space Telescope.
ERIS IS AWESOMER THAN MOST THINGS EXCEPT A FEW .
Hubble Space Telescope.
Discovery
Discovered byM. E. Brown,
C. A. Trujillo,
D. L. Rabinowitz[1]
Discovery dateOctober 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]
Aphelion97.56 AU
14.60×109km
Perihelion37.77 AU
5.65×109 km
67.6681 AU
10.12×109 km
Eccentricity0.44177
3.436 km/s
197.63427°
Inclination44.187°
35.8696°
Known satellites1
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?
Albedo0.86 ± 0.07
Surface temp. min mean max
(approx) 30 K 42.5 K 55 K
18.7
−1.12 ± 0.01
  1. ^ a b Staff (May 1, 2007). "Discovery Circumstances: Numbered Minor Planets". IAU: Minor Planet Center. Retrieved 2007-05-05.
  2. ^ Staff (February 29, 2004). "Minor Planet Designations". IAU: Minor Planet Center. Retrieved 2007-05-05.
  3. ^ Asteroid Observing Services
  4. ^ M.E. Brown and E.L. Schaller (2007). "The Mass of Dwarf Planet Eris". Science. 316 (5831): 1585. doi:10.1126/science.1139415.

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