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PSR B1957+20

PSR B1957+20 Facts

Location of PSR B1957+20

The location of the pulsar in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For PSR B1957+20, the location is 19h 59m 37.00 and 20° 48` 15.00 .

Physical Properties (Age) of PSR B1957+20

PSR B1957+20 Colour and Temperature

PSR B1957+20 has a spectral type of PSR.

The star is believed to be about 2.20 Billion years old. To put in context, the Sun is believed to be about five billion years old and the Universe is about 13.8 billion years old.

Distance to PSR B1957+20

The Parallax of the star is given as 0.65 which gives a calculated distance to PSR B1957+20 of 4990.26 light years from the Earth or 1529.99 parsecs. It is about 29,335,869,054,783,191.74 miles from Earth.

The star is roughly 315,580,891.91 Astronomical Units from the Earth/Sun give or take a few. An Astronomical Unit is the distance between Earth and the Sun. The number of A.U. is the number of times that the star is from the Earth compared to the Sun.

Time to Travel to PSR B1957+20

A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days).

If you were to drive there at about 120 m.p.h. in a car with an infinity engine so you didn't have to pull over for petrol, it would take you 244,465,575,456,526.60 hours or 27,907,029,161.70 years.

At the time of writing, the fastest probe so far created is the New Horizon probe which is travelling at a speed of 33,000 m.p.h. If the probe was travelling to PSR B1957+20 then it would take 888,965,728,932.82 hours / 101,480,106.04 years to get there. Speed Ref: N.A.S.A.

It would to take a spaceship journey travelling at the speed of light, 4990.26 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

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Additional PSR B1957+20 Facts and Figures

Visual Facts

Primary / Proper / Traditional NamePSR B1957+20
Spectral TypePSR
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypePulsar
GalaxyMilky Way
Age2.20 Billion Years Old
Right Ascension (R.A.)19h 59m 37.00
Declination (Dec.)20° 48` 15.00
Distance from Earth0.65 Parallax (milliarcseconds)
 4990.26 Light Years
 1529.99 Parsecs
 315,580,891.91 Astronomical Units

Companions (Multi-Star and Exoplanets) Facts

Exoplanet Count1

Sources and Links


List of Extrasolar Planets orbiting PSR B1957+20

NameStatusMass (Jupiters)Orbital Period (Days)EccentricityDiscoveredSemi-Major AxisPeriastron
PSR B1957+20 bConfirmed0.3801988

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Comments and Questions

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