Gpc-h Definition
symbol
(astronomy) An indeterminate unit of distance between 4/3 Gpc and 2 Gpc. The h is a parameter in the closed interval [0.5, 0.75] and reflects an uncertainty in the Hubble constant.
Wiktionary
(astronomy) An indeterminate unit of distance between 4/3 Gpc and 2 Gpc. The h is a parameter in the closed interval [0.5, 0.75] and reflects an uncertainty in the Hubble constant.