Athrabeth

Athrabeth is produced by James Pierson. James can be found on twitter @jpierson

The Tolkien Society Summer Seminar: https://www.tolkiensociety.org/events/tolkien-society-summer-seminar/

J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Quenta Silmarillion: Of the Coming of the Elves and the Captivity of Melkor"

2.0 2.1 J.R.R. Tolkien, Christopher Tolkien (ed.), Morgoth's Ring, pp. 71, 141 160

J.R.R. Tolkien, Christopher Tolkien (ed.), The Lost Road and Other Writings, Part Three: "The Etymologies", entries "ANÁR" and "RÎ"

J.R.R. Tolkien, Christopher Tolkien (ed.), Morgoth's Ring, "Index: Star-names", p. 435

Kristine Larsen, "A Definitive Identification of Tolkien’s `Borgil': An Astronomical and Literary Approach" in Tolkien Studies, vol. 2 (pp. 161–170), West Virginia University Press, 2005

3.0 3.1 J.R.R. Tolkien, "The Rivers and Beacon-hills of Gondor" (edited by Carl F. Hostetter), in Vinyar Tengwar, Number 42, July 2001, pp. 5-31

J.R.R. Tolkien, Christopher Tolkien (ed.), The Book of Lost Tales Part One, Appendix: Names in the Lost Tales – Part I, p. 255

J.R.R. Tolkien, "Qenyaqetsa: The Qenya Phonology and Lexicon", in Parma Eldalamberon XII (edited by Carl F. Hostetter, Christopher Gilson, Arden R. Smith, and Patrick H. Wynne), p. 43

J.R.R. Tolkien, "Words, Phrases and Passages in Various Tongues in The Lord of the Rings", in Parma Eldalamberon XVII (edited by Christopher Gilson), p. 24

https://www.forodrim.org/daeron/md_astro.html