Looking:	south east (124 degrees from North)
:	73 degrees from horizon
Field of View:	4.5 degrees (width)
:	3.5 degrees (height)
Limiting Magnitude:	20.1
Observing Conditions:	Clear Sky Clock Online...
Universal Time:	14/11/2009 08:48:46
Local Time:	14/11/2009 00:48:46
Julian Day:	2455149.86720
Sidereal Time:	5h 21m 03.5s
Delta T:	83.6 seconds
Location:	Mayhill, USA
Latitude:	32° 54' N
Longitude:	105° 31' W
Heliocentric X:	0.607524927 au
Y:	0.780924940 au
Z:	1393.9 km
Distance from Sun:	0.989409065 au
Angle from Ecliptic Plane:	1.94243756 arcseconds
Phi:	52.1186689 degrees

Name:	Tejat Posterior
Catalogue number:	HIP30343
Object type:	Variable, Multiple Star
Bayer:	Mu
Flamsteed/other:	13
HIP number:	30343
TYC number:	TYC1878-1429-1
Rises:	13/11/2009 at 18:47:02
Transit:	14/11/2009 at 01:51:07
Sets:	14/11/2009 at 08:55:12
Constellation name:	Gemini
Constellation common name:	The Twins
Constellation possessive form:	Geminorum
Azimuth:	123.03
Altitude:	72.73
Hour Angle (JNow):	-15.63
RA (JNow):	95.89
Dec (JNow):	22.51
RA (J2000):	95.74
Dec (J2000):	22.51
Ecliptic longitude:	1.67
Ecliptic latitude:	-0.01
Galactic longitude:	189.73
Galactic latitude:	4.17
Distance from observer:	232 ly
Distance from Sun:	232 ly
Proper motion RA:	0.0568 arcsec/ year
Proper motion Dec:	-0.1084 arcsec/ year
Variability:	small, < 0.6 Mag
Radius:	177 solar radii
Double/multiple:	binary, > 10" sep
Apparent magnitude:	2.84
Absolute magnitude:	-1.42 (visual)
Spectral Class:	M3 II
Temperature:	3234 Kelvin
B-V colour:	1.62
Luminosity:	3086 suns
Description:	Tejat Posterior is a giant or supergiant star. Giant stars are large and bright and appear in the upper (brighter) portion of the Hertzsprun-Russell (HR) diagram. Red giants, appearing on the lower-temperature side of the "giant" region of the H-R diagram are stars that no longer burn hydrogen in their core, but can burn hydrogen in an outer shell surrounding a now helium core .  They are the next step in the life of a main sequence star like our Sun. When a main sequence star has fused a certain portion of the hydrogen in its core, the star begins to swell, increasing in size by a factor of 100. As the star expands, it also cools, and becomes redder, hence the name 'red giant'. Most red giants will end their lives as white dwarfs after they shed their outer shell as a planetary nebula. Blue giants, on the other hand, are younger stars that started out much larger than our Sun. These stars burn hotter and brighter than most, and consequently their lives are shorter. A good portion of these blue giants end their lives as supernovas, neutron stars or even black holes. Tejat Posterior is both a variable star and one member of a multiple star system. It is possible that this star is an ‘eclipsing variable’. Eclipsing variables are members of a double star system which pass directly in front of their companion stars during their orbit. When this happens, light from the companion star is blocked, and the binary star appears fainter to observers on Earth. The most famous eclipsing binary is Algol, nicknamed ‘the Demon Star’ for its spooky changes in brightness.
Heliocentric X:	-21 ly
Y:	213 ly
Z:	89 ly