PSR B1620-26

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Image:Artist's impression of pulsar planet B1620-26c.jpg

PSR B1620-26 is a binary star about 12,399 light-years away in the constellation Scorpius (M4).

It is theorized that originally B1620-26 A had another, lower mass white dwarf companion, which was ejected when the current B1620-26 B interacted with the original binary system. At that time, B1620-26 B was still a main sequence star, with it's planet (PSR B1620-26c). Whereupon, the planet settled into orbit around both stars.

The triple system is just outside the core of the globular cluster. The age of the cluster has been estimated to be about 12.7 billion years. Hence this is the age estimate for the birth of the planet, and two stars.

1 PSR B1620-26 A
2 PSR B1620-26 B
3 Planet
- 3.1 PSR B1620-26c
4 External links

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PSR B1620-26 A

{{Starbox short | name = PSR B1620-26 A | epoch = J2000.0 | constell = Scorpius | ra = 16^h 23^m 38^s | dec = -26° 31' 53" | appmag_v = +24 | dist_ly = 12,399 | dist_pc = 3,800 | spectral = Pulsar | names = PSR J1623-2631,
16:23:38.22-23:31:53.8 J2000,
16:23:38.24-26:31:53.9,
ICRS 2000 }}

PSR B1620-26 A is a pulsar.

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PSR B1620-26 B

{{Starbox short | name = PSR B1620-26 B | epoch = J2000.0 | constell = Scorpius | ra = 16^h 23^m 38^s | dec = -26° 31' 53" | appmag_v = +24 | dist_ly = 12,399 | dist_pc = 3,800 | spectral = DB | names = unsure }}

PSR B1620-26 B is a white dwarf companion to the pulsar primary with a mass of 0.34 M_S.

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