The PSR B1257+12 System
3 planets
Virgo
PSR B1257+12 is a planetary system in the constellation Virgo hosting 3 confirmed exoplanets, about 1,957 light-years from Earth.
PSR B1257+12: Star and Habitable Zone
PSR B1257+12
- Mass
- 1.40 M☉
- Age
- 3.0 billion years (Sun: 4.6)
All 3 Planets in the PSR B1257+12 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| PSR B1257+12 b | Terrestrial | 25 d | — | — | 1994 |
| PSR B1257+12 c | Super Earth | 67 d | — | — | 1992 |
| PSR B1257+12 d | Super Earth | 98 d | — | — | 1992 |
Discovery History
The first planet found here, PSR B1257+12 c, was discovered in 1992 using the pulsar timing method. The most recent addition, PSR B1257+12 b, followed in 1994.
- 1992 — PSR B1257+12 c (Pulsar Timing)
- 1992 — PSR B1257+12 d (Pulsar Timing)
- 1994 — PSR B1257+12 b (Pulsar Timing)
Frequently Asked Questions About PSR B1257+12
How many planets does PSR B1257+12 have?
PSR B1257+12 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the PSR B1257+12 system habitable?
None of the known planets in PSR B1257+12 orbit within the star's habitable zone.
How far away is PSR B1257+12?
PSR B1257+12 is about 1,957 light-years from Earth in the constellation Virgo.
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