December 27

December 27 Leap Leap+1 Leap+2 Leap+3
1950 20Epsilon SGR 20Epsilon SGR
21 SGR 21 SGR 21 SGR
22Lambda SGR 22Lambda SGR
Gamma SCT
2000 19Delta SGR
20Epsilon SGR 20Epsilon SGR 20Epsilon SGR 20Epsilon SGR
21 SGR 21 SGR 21 SGR
22Lambda SGR

In some cases you have a choice of stars for this date. Remember that a brighter star has a smaller magnitude number, if that is your choice.

Name: 19Delta SGR Media
Birthday from Jack’s initial research: Dec 26
Magnitude: 2.7
Spectrum/Star type: Orange Giant
Distance in Light Years: 305
Diameter compared to Sun: 60
Luminosity compared to Sun: 1200 in infra-red
Date best observed: Aug 10
Additional information: From Latin for “Middle” of the Bow. It has three faint companions.

Name: 20Epsilon SGR Kaus Australis
Birthday from Jack’s initial research: Dec 26
Magnitude: 1.8
Spectrum/Star type: Blue Giant
Distance in Light Years: 145
Diameter compared to Sun: 7
Luminosity compared to Sun: 345
Date best observed: Aug 11
Additional information: From Arabic & Latin: “the Southern Part of the Bow”. This is the brightest star in Sagittarius and lies outside of the zodiac. It is a shell star rotating 70x faster than the sun.

Name: 21 SGR
Birthday from Jack’s initial research: Dec 27
Magnitude: 4.8
Spectrum/Star type: Orange Giant
Distance in Light Years: 600
Luminosity compared to Sun: ~250
Date best observed: Aug 12
Additional information: This is a double star.

Name: 22Lambda SGR Kaus Borealis
Birthday from Jack’s initial research: Dec 27
Magnitude: 2.8
Spectrum/Star type: Orange Giant
Distance in Light Years: 77
Diameter compared to Sun: 10
Luminosity compared to Sun: 30
Date best observed: Aug 12
Additional information: From Arabic & Latin for “Northern Part of the Bow”. Three degrees to the NE is the beautiful globular cluster M22 at 5.1 mag.

Name: Gamma SCT
Birthday from Jack’s initial research: Dec 28
Magnitude: 4.7
Spectrum/Star type: White
Distance in Light Years: 290
Diameter compared to Sun: ~4
Luminosity compared to Sun: ~110
Date best observed: Aug 13
Additional information: A zodiac star in The Shield, Scutum, fast-rotating. The beautiful Scutum Star Cloud is above this star, and 2 gorgeous telescopic nebulae are just to its west! Jim Kaler in his STARS website tells us that Gamma Scutum is coming our way – 2 million years from now it will be only 14 light-years away and shine brighter than Sirius, the brightest star in our night sky.

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