Eris

Eris

Monday, October 14, 2019

Eris, first discovered in 2003, first appeared to be larger than Pluto, a discovery that triggered debate in the scientific community and eventually led to the International Astronomical Union's decision in 2006 to clarify the definition of a planet. Recent observations indicate Eris may actually be a little smaller than Pluto. The dwarf planet is often so far from the sun that its atmosphere collapses and freezes on the surface in an icy glaze. The coating gleams brightly, reflecting as much sunlight as freshly fallen snow. Scientist's believe surface temperatures to vary from about -359 degrees Fahrenheit (-217 degrees Celsius) to -405 degrees Fahrenheit (-243 degrees Celsius). The thin atmosphere will thaw in hundreds of years as Eris gets closer to the sun, revealing a rocky surface scientists believe is similar to Pluto. -[NASA]

Changing Data

Rises:
Sets:
Apparent Magnitude:
Illumination:
%
Size (")
Distance in light minutes:
Distance in miles:
0
Distance in AU:

Orbital Data

Rotational Period:
1.079
Orbital Period:
561.37
Perihelion:
5.766 * 109 km
Aphelion:
1.459 * 1010 km
Epoch:
2011.08.27
Inclination:
46.87°
Semi-Major Axis:
1.018 * 1010 km
Orbit Circumference:
6.084 * 1010 km
Eccentricity:
0.433628367
Ascending Node:
36.06488°
Axial Tilt:
°
Albedo:
Color BV:
0.78
Color UV:
Equatorial Diameter:
2.600 * 103 km
Equatorial Circumference:
0.000 * 100 km
Surface Area:
7.850 * 107 km2
Surface Gravity:
~0.8 m/s2
Surface Temperature:
-243 - -218
Mass:
1.670 * 1022 kg
Volume:
0.00000 * 100 km3
Density:
2.36 g/cm3
Absolute Magnitude:
-1.2