Of course there isn't, but every Papal Declaration can be judged against the criteria necessary for it to be deemed infallible. When this is done there has been only one instance; in 1950 when Pope Pius XII defined the Assumption of Mary as being an article of faith for Roman Catholics. Prior to the solemn definition of 1870, Pope Pius IX, with the support of the overwhelming majority of Roman Catholic bishops, had proclaimed the Immaculate Conception of Mary an ex cathedra dogma in December 1854.
Of course there isn't, but every Papal Declaration can be judged against the criteria necessary for it to be deemed infallible. When this is done there has been only one instance; in 1950 when Pope Pius XII defined the Assumption of Mary as being an article of faith for Roman Catholics. Prior to the solemn definition of 1870, Pope Pius IX, with the support of the overwhelming majority of Roman Catholic bishops, had proclaimed the Immaculate Conception of Mary an ex cathedra dogma in December 1854.
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Interestingly, you said there was only one and listed two. Did you miss some others?
Catechism Of The Catholic Church
891 "The Roman Pontiff, head of the college of bishops, enjoys this infallibility in virtue of his office, when, as supreme pastor and teacher of all the faithful - who confirms his brethren in the faith he proclaims by a definitive act a doctrine pertaining to faith or morals. . . . The infallibility promised to the Church is also present in the body of bishops when, together with Peter's successor, they exercise the supreme Magisterium," above all in an Ecumenical Council. When the Church through its supreme Magisterium proposes a doctrine "for belief as being divinely revealed," and as the teaching of Christ, the definitions "must be adhered to with the obedience of faith." This infallibility extends as far as the deposit of divine Revelation itself.
ORDINATIO SACERDATOLIS
Wherefore, in order that all doubt may be removed regarding a matter of great importance, a matter which pertains to the Church's divine constitution itself, in virtue of my ministry of confirming the brethren (cf. Lk 22:32) I declare that the Church has no authority whatsoever to confer priestly ordination on women and that this judgment is to be definitively held by all the Church's faithful.
Infallible? Why or why not?
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UNAM SANCTAM
Furthermore, we declare, we proclaim, we define that it is absolutely necessary for salvation that every human creature be subject to the Roman Pontiff.
Infallible? Why or why not?
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MUNIFICENTISSIMUS DEUS
44. For which reason, after we have poured forth prayers of supplication again and again to God, and have invoked the light of the Spirit of Truth, for the glory of Almighty God who has lavished his special affection upon the Virgin Mary, for the honor of her Son, the immortal King of the Ages and the Victor over sin and death, for the increase of the glory of that same august Mother, and for the joy and exultation of the entire Church; by the authority of our Lord Jesus Christ, of the Blessed Apostles Peter and Paul, and by our own authority, we pronounce, declare, and define it to be a divinely revealed dogma: that the Immaculate Mother of God, the ever Virgin Mary, having completed the course of her earthly life, was assumed body and soul into heavenly glory.
You have already declared this to be Infallible so my only question would be why?
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What is the distinguishing characteristics between the three (and there are more) I have listed which would determine the infallibility of either or all?