HIP 28270 A

From my calculations, the star HIP 28270 A was overhead at 2:30 pm June 17 in Pasadena, Texas.  Ziekal, this is your star.

Z Full Stellarium window
Image from Stellarium.  HIP 28270 A is the object circled in the middle of this image.

This is a massive star, type B9, that is part of a double system in the constellation Auriga.  At magnitude 8.5 it probably can not be seen with the unaided eye.  This is because this particular star is so distant, 701 Light Years.

The light we see from HIP 28270 A left that star 701 years ago.  That’s about the time Dante published his Divine Comedy.

Z Info
from Stellarium

Spectral Type B stars are hot and blue, and produce lots of ultraviolet radiation.  B stars are massive and brilliant.  They fuse their nuclear fuel at such a fast rate that they do not live very long, as stars go.

HIP 28270 A is a bright star, but its distance makes it appear dim to us.  It’s Absolute Magnitude is 1.59  If it were only 32.6 Light Years away, it would be one of our brightest stars.

HIP 28270 A is highest in the Buffalo night sky December thru March.  Its coordinates are 5 hours 59 minutes 31 seconds,   +29 degrees 57 minutes 39 seconds

Screen Shot 2017-06-20 at 7.32.16 AM.pngAs you can tell on the HR Diagram above, B stars are more rare than Type G stars.  Our Sun is a Type G star.  HIP 28270 A is not a White Dwarf (bottom left corner of the HR Diagram) nor a giant or supergiant  (along the top.)  This star is on the main sequence, that sweeping diagonal line from top left to bottom right, that contains stars that are happily fusing hydrogen into helium in their cores.  When HIP 28270 A runs out of nuclear fuel, it may die in what we call a Supernova Explosion.

Companies and individuals have no authority to sell stars or sell naming rights for stars,  The International Astronomical Union has the authority to name objects, usually after the discoverer.  But if you were born in Pasadena Texas around 2:30 in the afternoon on June 17, this star was directly overhead.  I can’t give you this star, it’s been your star all along.

iPhoto Library 76
Dennis Hands adjusting the focus on the transit of Venus.  2004 in South Africa



Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s