|May12-07, 12:14 AM||#1|
Gliese 581 d
I'm trying to find a reasonable estimate of the density of Gliese 581 d (not c).
According to Wiki, d is ~1.96x the radius of Earth and ~7.7x the mass. This makes for a density very near Earth's (2^3=8). Yet they then go on to list its density as 730kg/m^3 or 0.73g/cm^3 - almost as rarefied as Saturn.
Can anyone point me at some more authoritative numbers? I know we're only estimating, but clearly one of those three numbers r,d or m is spurious.
|May12-07, 11:51 PM||#2|
I notice the article you mention is lacking citations on both the radius and the density, so it is possible those are flawed as well.
|Similar Threads for: Gliese 581 d|
|Gliese 581c/d and their Red Sun?||Astrophysics||4|
|Habitability of Gliese 581 D||Astrophysics||0|