Geometric albedo node of their orbit, and hence lie on the ecliptic. In practice, measurements at small nonzero phase angles are used to derive the parameters which characterize the directional reflectance properties for the body (Hapke parameters). The reflectance function described by these can then be extrapolated to zero phase angle to obtain an estimate of the geometric albedo. For very bright, solid, airless objects such as Saturn's moons Enceladus and Tethys, whose total reflectance (Bond albedo) is close to one, a strong opposition effect combines with the high Bond albedo to give them a geometric albedo above unity (1.4 in the
Albedo One emotion... I don't think we've ever published a story nobody disliked and I doubt (hope) we ever will." The overall approach to selection of fiction for publication in "Albedo One" has been commended by one reviewer by stating that "while other publishers strain to adhere to self-imposed deadlines, Albedo One embraces a publishing schedule dictated by its gradual accumulation of quality material - material that mixes first time writers with established professionals, and that demands an audience." "For the main article see Aeon Award" Since 2004 "Albedo One" has sponsored the Aeon Award, a fiction contest aimed at promoting new