Pease 1

{{Planetary nebula |

| image = 250px

| name = Pease 1

| type = Planetary

| epoch = J2000.0

| ra =

| dec =

| dist_ly = 33,600{{cite web |title=Globular Cluster M15 and Planetary Nebula Pease 1 |url=http://www.astropix.com/HTML/SHOW_DIG/M15_Pease1.HTM |url-status=dead |archive-url=https://web.archive.org/web/20110718101428/http://www.astropix.com/HTML/SHOW_DIG/M15_Pease1.HTM |archive-date=2011-07-18 |website=astropix.com}}

| appmag_v = +15.5

| size_v = 3 arcsecs

| constellation = Pegasus

| radius_ly = 0.24

| absmag_v = -

| notes =

| names =

}}

Pease 1 is a planetary nebula located within the globular cluster M15 33,600 light-years away in the constellation Pegasus. It was the first planetary nebula known to exist within a globular cluster when it was discovered in 1928{{citation |last1=O'Meara |first1=Stephen James |title=Deep-Sky Companions: The Messier Objects |page=74 |year=1998 |postscript=. |url=https://books.google.com/books?id=jis4evHuuzUC&pg=PA74 |publisher=Cambridge University Press |isbn=978-0521553322 |last2=Levy |first2=David H. |author-link2=David H. Levy}} by Francis G. Pease, and just two more have been found (in other clusters) since.{{Cite journal |last1=Bond |first1=Howard E. |last2=Bellini |first2=Andrea |last3=Sahu |first3=Kailash C. |date=2024-09-17 |title=Testing Cluster Membership of Planetary Nebulae with High-precision Proper Motions. I. HST Observations of JaFu 1 Near the Globular Cluster Palomar 6 |journal=The Astronomical Journal |language=en |volume=168 |issue=4 |pages=160 |doi=10.3847/1538-3881/ad67d4 |doi-access=free |arxiv=2407.18135 |bibcode=2024AJ....168..160B |issn=1538-3881}} At magnitude 15.5, it requires telescopes with an aperture of at least {{convert|300|mm}} to be detected.{{cite book |last=Dunlop |first=Storm |url=https://archive.org/details/collinsatlasofni0000dunl |title=Atlas of the Night Sky |publisher=Collins |year=2005 |isbn=0-00-717223-0 |url-access=registration}}