Declension table of ?ṛtaspati

Masculine	Singular	Dual	Plural
Nominative	ṛtaspatiḥ	ṛtaspatī	ṛtaspatayaḥ
Vocative	ṛtaspate	ṛtaspatī	ṛtaspatayaḥ
Accusative	ṛtaspatim	ṛtaspatī	ṛtaspatīn
Instrumental	ṛtaspatinā	ṛtaspatibhyām	ṛtaspatibhiḥ
Dative	ṛtaspataye	ṛtaspatibhyām	ṛtaspatibhyaḥ
Ablative	ṛtaspateḥ	ṛtaspatibhyām	ṛtaspatibhyaḥ
Genitive	ṛtaspateḥ	ṛtaspatyoḥ	ṛtaspatīnām
Locative	ṛtaspatau	ṛtaspatyoḥ	ṛtaspatiṣu

Compound ṛtaspati -

Adverb -ṛtaspati