November 18

November 18 Leap Leap+1 Leap+2 Leap+3
1950 37 LIB 37 LIB
38Gamma LIB 38Gamma LIB 38Gamma LIB
39Upsilon LIB 39Upsilon LIB 39Upsilon LIB
40Tau LIB 40Tau LIB
2000 37 LIB 37 LIB 37 LIB
38Gamma LIB 38Gamma LIB 38Gamma LIB
39Upsilon LIB 39Upsilon LIB

In many 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: 37 LIB
Birthday from Jack’s initial research: Nov 17
Magnitude: 4.6
Spectrum/Star type: Orange Giant
Distance in Light Years: 94
Diameter compared to Sun: ~10
Luminosity compared to Sun: ~50
Date best observed: Jun 29

Name: 38Gamma LIB
Birthday from Jack’s initial research: Nov 18
Magnitude: 3.9
Spectrum/Star type: Orange Giant
Distance in Light Years: 150
Diameter compared to Sun: ~15
Luminosity compared to Sun: 70
Date best observed: Jun 30
Additional information: 38 Gamma is a double star.

Name: 39Upsilon LIB
Birthday from Jack’s initial research: Nov 18
Magnitude: 3.6
Spectrum/Star type: Orange giant
Distance in Light Years: 195
Diameter compared to Sun: ~20x
Luminosity compared to Sun: ~100x
Date best observed: Jun 30
Additional information: 39 Upsilon is a double star. In Upton’s Star Atlas of 1896, Sigma, Tau, and Upsilon LIB were still shown to be in the Scorpion!

Name: 40Tau LIB
Birthday from Jack’s initial research: Nov 19
Magnitude: 3.7
Spectrum/Star type: Blue
Distance in Light Years: 445
Diameter compared to Sun: ~6
Luminosity compared to Sun: 10s of thousands
Date best observed: Jul 1
Additional information: In Upton’s Star Atlas of 1896, Sigma, Tau, and Upsilon LIB were still shown to be in the Scorpion!

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