Bergelmir (moon)

Bergelmir
Bergelmir imaged by the Cassini spacecraft in September 2014
Discovery
Discovered byS. Sheppard, D. Jewitt,
J. Kleyna, and B. Marsden
Discovery dateMay 4, 2005
Designations
Designation
Saturn XXXVIII
Pronunciation/ˈbɛərjɛlmɪər/ or /ˈbɜːrɡəlmɪər/[a]
Named after
Bergelmir
S/2004 S 15
AdjectivesBergelmian[b]
Orbital characteristics[1]
19338000 km
Eccentricity0.142
1006.659 d[2]
Inclination158.5°
Satellite ofSaturn
GroupNorse group
Physical characteristics[2][3]
5+50%
−30% km
8.13±0.09 h
Albedo0.06 (assumed)
Spectral type
B–R = 1.10 ± 0.15[4]
24.2
15.2

Bergelmir or Saturn XXXVIII (provisional designation S/2004 S 15) is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on May 4, 2005, from observations taken between December 12, 2004, and March 9, 2005.

Bergelmir is about 6 kilometers (4 miles) in diameter,[3] and orbits Saturn at an average distance of 19,338,000 km in 1006.659 days, at an inclination of 157° to the ecliptic (134° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.152. Its rotation period is 8.13±0.09 hours.[2]

It was named in April 2007 after Bergelmir, a giant from Norse mythology and the grandson of Ymir, the primordial giant. Bergelmir and his wife alone among their kind were the only survivors of the enormous deluge of blood from Ymir's wounds when he was killed by Odin and his brothers at the dawn of time. Bergelmir then became the progenitor of a new race of giants.


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  1. ^ Cite error: The named reference Ma2010 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference LPSC2654 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Denk2018 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference GraykowskiJewitt2018 was invoked but never defined (see the help page).