It's easy to get spectral information about asteroids, from the JPL database for instance. They often have an albedo estimation, but almost never have a mass estimate (if you have albedo and mass, then you roughly have density).
So the natural question is if we can just estimate density general...
ISRO's MOM lifting off (credit Universe Today).
What it comes down to is that this launch went over the ocean - thereby creating a need for floating things to collect telemetry data. It's ground track looked like this:
A gyre in oceanography is any large system of rotating ocean currents, particularly those involved with large wind movements. Gyres are caused by the Coriolis Effect; planetary vorticity along with horizontal and vertical friction, which determine the circulation patterns from the wind curl (torque). The term gyre can be used to refer to any type of vortex in the air or the sea, even one that is man-made, but it is most commonly used in oceanography to refer to the major ocean systems.
Major gyres
The following are the five most notable gyres:
* Indian Ocean Gyre
* North Atlantic Gyre...
