News Release Archive:

News Release 585 of 1051

July 10, 2003 02:00 PM (EDT)

News Release Number: STScI-2003-19

Oldest Known Planet Identified

Technical facts about this news release:

About the Object
Object Name: B1620-26 in M4 (NGC 6121)
Object Description: Pulsar with Companion in Globular Cluster
Position (J2000): R.A. 16h 23m 35.4s
Dec. -26° 31' 31.9"
Constellation: Scorpius
Distance: M4 is roughly 5,600 light-years (1,720 parsecs) from the Earth.
About the Data
Data Description: Data for this release was taken from HST proposals 5461 and 8679 together with archived observations from HST proposal 8153. The full team involved in this discovery is composed of Brad Hansen (UCLA), Harvey Richer (UBC), Steinn Sigurdsson (Penn State), Ingrid Stairs (UBC) and Stephen Thorsett (UCSC).
Instrument: WFPC2
Exposure Date(s): February - April 1995; January - April 2001
Filters: F336W (B) 11,800 sec
F555W (V) 15,000 sec
F814W (I) 4800 sec
About the Image
Image Credit: NASA and H. Richer (U. British Columbia)
Release Date: July 10, 2003
Orientation: Globular Cluster M4