calculated distance to Pi Serpentis as 177.07 light years away from Earth or 54.29 parsecs. It would take a spaceship travelling at the speed of light, 177.07 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.
In 2007, Hipparcos data was revised with a new parallax of 18.22 which put Pi Serpentis at a distance of 179.01 light years or 54.88 parsecs. It should not be taken as though the star is moving closer or further away from us. It is purely that the distance was recalculated.
The star's Galacto-Centric Distance is 7,371.00 Parsecs or 24,041.50 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.
The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.
|Primary / Proper / Traditional Name||Pi Serpentis|
|Alternative Names||Pi. Ser, HD 143894, HIP 78554, HR 5972, 44 Serpentis, 44 Ser, BD+23 2886|
|Multiple Star System||No / Unknown|
|Star Type||main sequence Dwarf Star|
|Absolute Magnitude||1.15 / 1.12|
|Visual / Apparent Magnitude||4.82|
|Naked Eye Visible||Yes - Magnitudes|
|Right Ascension (R.A.)||16h 02m 17.69|
|Declination (Dec.)||+22° 48` 15.8|
|Galactic Latitude||46.78 degrees|
|Galactic Longitude||38.14 degrees|
|1997 Distance from Earth||18.42 Parallax (milliarcseconds)|
|177.07 Light Years|
|2007 Distance from Earth||18.22 Parallax (milliarcseconds)|
|179.01 Light Years|
|Galacto-Centric Distance||24,041.50 Light Years / 7,371.00 Parsecs|
|Proper Motion Dec.||23.60 ± 0.21 milliarcseconds/year|
|Proper Motion RA.||4.03 ± 0.26 milliarcseconds/year|
|Radial Velocity||-28.20 ± 4.20 km/s|
|Iron Abundance||0.38 ± 9.99 Fe/H|
|Stellar Luminosity (Lsun)||31.41|
|Calculated Effective Temperature||8,815 Kelvin|