Two common optical albedos that are used in astronomy are the (V-band) geometric albedo (measuring brightness when illumination comes from directly behind the observer) and the Bond albedo (measuring total proportion of electromagnetic energy reflected).
tˈuː kˈɑːmən ˈɑːptɪkəl ælbˈiːdoʊz ðæt ɑːɹ jˈuːzd ɪn ɐstɹˈɑːnəmi ɑːɹ ðə vˈiːbˈænd dʒˌiːoʊmˈɛtɹɪk ælbˈiːdoʊ mˈɛʒɚɹɪŋ bɹˈaɪtnəs wɛn ɪlˌuːmᵻnˈeɪʃən kˈʌmz fɹʌm dᵻɹˈɛktli bᵻhˌaɪnd ðɪ əbzˈɜːvɚ ænd ðə bˈɑːnd ælbˈiːdoʊ mˈɛʒɚɹɪŋ tˈoʊɾəl pɹəpˈoːɹʃən ʌv ɪlˌɛktɹoʊmɐɡnˈɛɾɪk ˈɛnɚdʒi ɹᵻflˈɛktᵻd.