November 29

November 29 Leap Leap+1 Leap+2 Leap+3
1950 19 Omicron SCO 19 Omicron SCO
20 Sigma SCO 20 Sigma SCO
4Psi OPH 4Psi OPH 4Psi OPH
5Rho OPH 5Rho OPH
2000 BS 6070 d SCO
19 Omicron SCO 19 Omicron SCO 19 Omicron SCO
20 Sigma SCO 20 Sigma SCO 20 Sigma SCO 20 Sigma SCO
4Psi OPH 4Psi OPH

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: HR 6070 d SCO aka HD 146624 formerly BS 6070
Birthday from Jack’s initial research: Nov 28
Magnitude: 4.8
Spectrum/Star type: White
Distance in Light Years: 140
Diameter compared to Sun: ~2.5x
Luminosity compared to Sun: ~50x
Date best observed: Jul 10

Name: 19 Omicron SCO
Birthday from Jack’s initial research: Nov 28
Magnitude: 4.5
Spectrum/Star type: White Giant
Distance in Light Years: 1175
Diameter compared to Sun: ~6x
Luminosity compared to Sun: ~50x
Date best observed: July 11
Additional information: This star is far away for a visible star.

Name: 20Sigma SCO
Birthday from Jack’s initial research: Nov 28
Magnitude: 2.9, variable
Spectrum/Star type: Blue, but dust makes it less so from our view.
Distance in Light Years: 735
Diameter compared to Sun: 2 Hot Stars, one losing mass to the other.
Luminosity compared to Sun: 65,000 & 27,000
Date best observed: July 11
Additional information: 20 Sigma is a spectroscopic binary. Interstellar dust dims the brightness by 1+ magnitude! One star is a young, massive, rare O Star, the other is blue; both are egg-shaped! There are 2 other companions as well. Together with Tau Sco they are known as Al Niyat, “Outworks of the Heart”, protecting the Heart of the Scorpion, Antares.

Name: 4Psi OPH
Birthday from Jack’s initial research: Nov 29
Magnitude: 4.5
Spectrum/Star type: Orange Giant
Distance in Light Years: 180
Diameter compared to Sun: ~15x
Luminosity compared to Sun: ~60x
Date best observed: Jul 12
Additional information: 4 Psi is in the leg of Ophiuchus, the Serpent-Bearer.

Name: 5Rho OPH
Birthday from Jack’s initial research: Nov 30
Magnitude: 4.6
Spectrum/Star type: Blue, Binary
Distance in Light Years: 395
Luminosity compared to Sun: 4900 & 2100
Date best observed: Jul 12
Additional information: There are 4 or 5 stars in a beautiful faint nebula here. It is in the leg of Ophiuchus, above Antares.

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