BDF-521

{{Short description|Galaxy in the constellation Piscis Austrinus}}

{{refimprove|date=October 2024}}

{{Infobox Galaxy

| name = BDF-521

| image =

| caption =

| epoch = J2000

| ra = {{RA|22|27|46.66}}

| dec = {{DEC|-35|07|07.7}}

| z = 7.008{{cite journal | doi=10.1088/2041-8205/730/2/L35 | title=Spectroscopic Confirmation of Two Lyman Break Galaxies at Redshift Beyond 7 | date=2011 | last1=Vanzella | first1=E. | last2=Pentericci | first2=L. | last3=Fontana | first3=A. | last4=Grazian | first4=A. | last5=Castellano | first5=M. | last6=Boutsia | first6=K. | last7=Cristiani | first7=S. | last8=Dickinson | first8=M. | last9=Gallozzi | first9=S. | last10=Giallongo | first10=E. | last11=Giavalisco | first11=M. | last12=Maiolino | first12=R. | last13=Moorwood | first13=A. | last14=Paris | first14=D. | last15=Santini | first15=P. | journal=The Astrophysical Journal | volume=730 | issue=2 | pages=L35 | bibcode=2011ApJ...730L..35V | arxiv=1011.5500 }}

| h_radial_v =

| dist_ly = 12.9 billion light-years
(light travel distance)

| type =

| mass =

| appmag_v = 28

| size_v =

| constellation name = Piscis Austrinus

| notes =

| names = CFP2010 BDF 521

}}

BDF-521 is a distant galaxy with a redshift of z = 7.008, corresponding to a distance traveled by light to come down to Earth of 12.89 billion light years.