Page:Star Lore Of All Ages, 1911.pdf/592

Stars Approaching the Earth

Star Name	Speed in Miles per Second
	Potsdam	Todd[1]	Greenwich	Vogel
Altair		23.9	27	23.7
Polaris	16.3		16
Algol	02.3		02
Arcturus			45	04.6
Vega			34	09.7
Deneb			36	05.1
Pollux[2]			33
Sirius				09.7
Procyon	07			05.5
Castor				18.4

Stars Receding the Earth

Star Name	Speed in Miles per Second
	Potsdam	Todd[1]	Vogel	Greenwich
Aldebaran	30	31.1	30.1	31
Rigel	39	13.6	10.1	18
Betelgeuse		17.6		28
α Coronæ		20.3
Capella	17		15.2	23
ε Orionis	34		35

Famous Temporary Stars

Date	Appearing in the Constellation
134 b.c.	Scorpio	The star of Hipparchus
123 a.d.	Ophiuchus

1. From Todd's Astronomy.
2. According to Allen Pollux is receding from the earth at a rate of 1 mile per second.