sˈʌbsᵻkwənt klˈeɪmz hɐvbɪn mˌeɪd baɪ vˈɛɹiəs əbzˈɜːvɚz ˈɛvɚ sˈɪns, ɪŋklˈuːdɪŋ sˌɜː wˈɪljəm hˈɜːʃəl, sˌɜː pˈætɹɪk mˈʊɹ, dˈeɪl pˈiː. kɹˈuːɪkʃˌæŋk, ænd wˈɪljəm kˈeɪ. hˈɑːɹtmən.
Subsequent claims have been made by various observers ever since, including Sir William Herschel, Sir Patrick Moore, Dale P. Cruikshank, and William K. Hartmann.