Palomar Distant Solar System Survey

The Palomar Distant Solar System Survey (PDSSS) was a wide-field survey aimed at finding distant trans-Neptunian objects.{{cite journal

|title= Schwamb et al. 2010

|bibcode=2010ApJ...720.1691S

|arxiv=1007.2954|doi=10.1088/0004-637X/720/2/1691|last1=Schwamb

|first1=Megan E.

|last2=Brown

|first2=Michael E.

|last3=Rabinowitz

|first3=David L.

|last4=Ragozzine

|first4=Darin

|journal=The Astrophysical Journal

|year=2010

|volume=720

|issue=2

|page=1691

|s2cid=5853566

}} It used the robotic 1.2 m Samuel Oschin Telescope at Palomar Observatory and the QUEST large-area CCD camera in 2007 and 2008.

The survey was designed to identify putative members of a Sedna-like population with perihelia greater than 45 AU. The limiting magnitude of this study was 21.3 in the R-band; it was sensitive out to distances of 1000 AU, and 12,000 square degrees of sky were searched. This observing program was responsible for the discovery of 25 minor planets including trans-Neptunian objects and centaurs. {{mpl|(309239) 2007 RW|10}}{{Cite web |title=MPEC 2007-X06 : 2007 RW10, 2007 RG283, 2007 RH283 |url=https://www.minorplanetcenter.net/mpec/K07/K07X06.html |access-date=2024-08-03 |website=www.minorplanetcenter.net}} and Gǃkúnǁʼhòmdímà ({{mp|(229762) 2007 UK|126}}){{Cite web |title=MPEC 2008-D38 : 2007 UK126 |url=https://minorplanetcenter.net/mpec/K08/K08D38.html |access-date=2024-08-03 |website=minorplanetcenter.net}} were among the objects discovered by this survey. It redetected Sedna but no other objects in Sedna-like orbits were identified.