Declension table of ?gaganastha

Masculine	Singular	Dual	Plural
Nominative	gaganasthaḥ	gaganasthau	gaganasthāḥ
Vocative	gaganastha	gaganasthau	gaganasthāḥ
Accusative	gaganastham	gaganasthau	gaganasthān
Instrumental	gaganasthena	gaganasthābhyām	gaganasthaiḥ gaganasthebhiḥ
Dative	gaganasthāya	gaganasthābhyām	gaganasthebhyaḥ
Ablative	gaganasthāt	gaganasthābhyām	gaganasthebhyaḥ
Genitive	gaganasthasya	gaganasthayoḥ	gaganasthānām
Locative	gaganasthe	gaganasthayoḥ	gaganastheṣu

Compound gaganastha -

Adverb -gaganastham -gaganasthāt