Table:
text: Historical brightest stars
Jocelyn Tomkin's 1998 list of the brightest star in Earth's night sky at each period within the last or next 5 million years
Jocelyn Tomkin's 1998 list of the brightest star in Earth's night sky at each period within the last or next 5 million years
Star Start_year End_year Maximum_year Maximum_magnitude Distance_at_maximum_LY Current_distance Current_magnitude_
Epsilon Canis Majoris ... -4460000 -4700000 -3.99 34 430 1.50
Beta Canis Majoris -4460000 -3700000 -4420000 -3.65 37 500 1.99
Canopus (first time) -3700000 -1370000 -3110000 -1.86 177 310 -0.72
Zeta Sagittarii -1370000 -1080000 -1200000 -2.74 8 89.1 2.60
Zeta Leporis -1080000 -950000 -1050000 -2.05 5.3 70 3.55
Canopus (second time) -950000 -420000 -950000 -1.09 252 310 -0.72
Aldebaran -420000 -210000 -320000 -1.54 21.5 65 0.85
Capella -210000 -160000 -240000 -0.82 27.9 42.2 0.08
Canopus (third time) -160000 -90000 -160000 -0.70 302 310 -0.72
Sirius (current) -90000 +210,000 +60,000 -1.64 7.8 8.6 -1.46

text: Historical brightest stars
Jocelyn Tomkin's 1998 list of the brightest star in Earth's night sky at each period within the last or next 5 million years
Jocelyn Tomkin's 1998 list of the brightest star in Earth's night sky at each period within the last or next 5 million years
Star Start_year End_year Maximum_year Maximum_magnitude Distance_at_maximum_LY Current_distance Current_magnitude_
Vega +210,000 +480,000 +290,000 -0.81 17.2 25.04 0.03
Canopus (fourth time) +480,000 +990,000 +480,000 -0.40 346 310 -0.72
Beta Aurigae +990,000 +1,150,000 +1,190,000 -0.40 28.5 82.1 1.9
Delta Scuti +1,150,000 +1,330,000 +1,250,000 -1.84 9.2 187 4.72
Gamma Draconis +1,330,000 +2,030,000 +1,550,000 -1.39 27.7 154 2.36
Upsilon Librae +2,030,000 +2,670,000 +2,290,000 -0.46 30 195 3.6
NR Canis Majoris +2,670,000 +3,050,000 +2,870,000 -0.88 14 280 5.6
Omicron Herculis +3,050,000 +3,870,000 +3,470,000 -0.63 44 346 3.83
Beta Cygni +3,870,000 ... +4,610,000 -0.52 80 390 3.18

text: Historical brightest stars
Jocelyn Tomkin's 1998 list of the brightest star in Earth's night sky at each period within the last or next 5 million years
Jocelyn Tomkin's 1998 list of the brightest star in Earth's night sky at each period within the last or next 5 million years
Star Start_year End_year Maximum_year Maximum_magnitude Distance_at_maximum_LY Current_distance Current_magnitude_
Epsilon Canis Majoris ... -4460000 -4700000 -3.99 34 430 1.50
Beta Canis Majoris -4460000 -3700000 -4420000 -3.65 37 500 1.99
Canopus (first time) -3700000 -1370000 -3110000 -1.86 177 310 -0.72
Zeta Sagittarii -1370000 -1080000 -1200000 -2.74 8 89.1 2.60
Zeta Leporis -1080000 -950000 -1050000 -2.05 5.3 70 3.55
Canopus (second time) -950000 -420000 -950000 -1.09 252 310 -0.72
Aldebaran -420000 -210000 -320000 -1.54 21.5 65 0.85
Capella -210000 -160000 -240000 -0.82 27.9 42.2 0.08
Canopus (third time) -160000 -90000 -160000 -0.70 302 310 -0.72
Sirius (current) -90000 +210,000 +60,000 -1.64 7.8 8.6 -1.46

text: Historical brightest stars
Jocelyn Tomkin's 1998 list of the brightest star in Earth's night sky at each period within the last or next 5 million years
Jocelyn Tomkin's 1998 list of the brightest star in Earth's night sky at each period within the last or next 5 million years
Star Start_year End_year Maximum_year Maximum_magnitude Distance_at_maximum_LY Current_distance Current_magnitude_
Vega +210,000 +480,000 +290,000 -0.81 17.2 25.04 0.03
Canopus (fourth time) +480,000 +990,000 +480,000 -0.40 346 310 -0.72
Beta Aurigae +990,000 +1,150,000 +1,190,000 -0.40 28.5 82.1 1.9
Delta Scuti +1,150,000 +1,330,000 +1,250,000 -1.84 9.2 187 4.72
Gamma Draconis +1,330,000 +2,030,000 +1,550,000 -1.39 27.7 154 2.36
Upsilon Librae +2,030,000 +2,670,000 +2,290,000 -0.46 30 195 3.6
NR Canis Majoris +2,670,000 +3,050,000 +2,870,000 -0.88 14 280 5.6
Omicron Herculis +3,050,000 +3,870,000 +3,470,000 -0.63 44 346 3.83
Beta Cygni +3,870,000 ... +4,610,000 -0.52 80 390 3.18

Question: Among the historically brightest stars, how many stars are greater than zero in magnitude?

Question: Among the historically brightest stars, how many stars do not have current magnitudes greater than zero?