Rishi: Traditionally assigned within Pitṛ-hymn lineages (often attributed in anukramaṇī tradition to seers of Pitṛ-sūkta strata; verify against the Vājasaneyin anukramaṇī for 19.63).
Devata: Pitaraḥ (the Fathers)
Chandas: Triṣṭubh-like cadence (as transmitted in VS Pitṛ sections; confirm by metrical scan in your edition).