218 



KNOWLEDGE 



[November 1, 1893. 



THE FACE OF THE SKY FOR NOVEMBER. 



By Herbert Sadler, F.E.A.S. 



SOLAR spots show but little dimiinition in number. 

 Conveniently observable minima of Algol occur at 

 Oh. 4m. A.M. on the Cth, 8b. 53m. p.m. on the 8th, 

 oh. i2va. P.M. on the 11th, and 9h. 35m. p.m. on 

 the 28th. 



Mercury is an evening star during the greater portion of 

 the month in the technical sense of the term, but, owing 

 to his proximity to the Sun and great southern declination, 

 he is very badly placed for observation. On the 1st he 

 sets at 5h. 8m. p.m., 36m. after sunset, with a southern 

 declination of 23° 10', and an apparent diameter of 0-0", 

 -Jgths of the disc being illuminated. On the 12th he sets 

 at 4h. 57m. p.m., 41m. after sunset, with a southern 

 declination of 24° 43', and an apparent diameter of TV', 

 ■jtijths of the disc being illuminated. He is at his greatest 

 eastern elongation (23°) on the 5th, and in inferior con- 

 junction with the Sim on the 26th. After this he becomes 

 a morning star, rising on the last day of the month at 

 6h. 58m. A.M., 46m. before sunrise, with a southern 

 declination of 18° 2', and an apparent diameter of 8i". 

 Dining the month the planet describes a looped path in 

 Libra and Scorpio. 



Venus is an evening star, but, owing to her great southern 

 declination, is also very badly placed for observation. She 

 sets on the 1st at 6h. 24m. p.m., or Ih. 5'2m. after the 

 Sun, with a southern declination of 25° 55', and an apparent 

 diameter of 17|", yo\,4'l's of ^^^ '^isc being illuminated, 

 and her theoretical brightness being about one half of 

 what it will be at the beginning of January, 1894. On the 

 16th she sets at 6h. 38m. p.m., or 2h. 28m. after the Sun, 

 with a southern declination of 25° 56', and an apparent 

 diameter of 20", -i%ths of the disc being illuminated. On 

 the 30th she sets at 7h. 5m. p.m., or 3h. 11m. after the 

 Sun, with a southern decimation of 23° 44', and an apparent 

 diameter of 23J", y^nths of the disc being illuminated, and 

 the theoretical brightness of the planet being about two- 

 thirds of what it will be at the beginning of next .January. 

 During October Venus describes a direct path through the 

 whole of Sagittarius on to the confines of Capricorn us, 

 being near A Sagittarii on the evening of the 11th, 

 0- Sagittarii on the 18th, and the wide pair, h^ h-, on the 

 25th. 



Mars is, for the purposes of the amateur, invisible. 



Jupiter is now a magnificent object in the evening sky, 

 being visible all night long. He rises on the 1st at 

 5h. 16m. P.M., or three-quarters of an hour after sunset, 

 with a northern declination of 18° 45', and an apparent 

 equatorial diameter of 47-9". On the 16th he rises at 

 4h. 10m. P.M., or about sunset, with a northern declination 

 of 18° 20', and an apparent equatorial diameter of 48-4". 

 He is in opposition to the Sun on the 18th, at a distance 

 from the earth of just 374 millions of miles. On the 30th 

 he rises at 3h. lum. p.m., with a northern declination of 

 17° 55', and an apparent equatorial diameter of 4H-0". 

 During the month he describes a retrograde path in Taurus, 

 to the south-west of the Pleiades. At about 7h. p.m. 

 on the 29th a 9^ magnitude star will be at about 20" 

 distance from the planet's northern limb. The following 

 phenomena of the satellites occur while the planet is more 

 than 8° above and the Sun 8° below the horizon : — On 

 the 1st an occultation reappearance of the first satellite at 

 7h. 28m. p.m. On the 3rd an eclipse reappearance of the 

 third satelhte at 6h. 46m. 21s. p.m. ; an occultation dis- 

 appearance of the same satellite at Oh. 52m. p.m., and its 

 occultation reappearance at 8h. 4m. p.m. On the 4th an 

 eclipse disappearance of the second satellite at 3h. 33m, 8s. 



A.M. On the 5th an eclipse disappearance of the first 

 satellite at 5h. 50m. 12s. a.m. ; a transit ingress of the 

 shadow of the second satellite at 9h. 50m. p.m., and of the 

 satellite itself at lOh. 81m. p.m. On the 6th a transit 

 egress of the shadow of the second satellite at Oh. 10m. 

 A.M., and of the satellite itself at Oh. 46m. a.m.; a transit 

 ingress of the first satellite at 3h. 7m. a.m. ; a transit 

 ingress of the satellite at 8h. 27m. a.m. ; a transit egress 

 of the shadow at 5h. 19m. a.m., and of the satellite at 

 5h. 38m. A.M. On the 7lh an eclipse disappearance of the 

 first satellite at Oh. 18m. 57s. a.m., and its reappearance 

 from occultation at 2h. 46m. a.m. ; an occultation re- 

 appearance of the second satellite at 7h. 48m. p.m. ; a 

 transit ingress of the shadow of the first satellite at Oh. 35m. 

 P.M. ; of the satellite at 9h. 52m. p.m. ; a transit egress of 

 the shadow at lib. 47m. p.m. On the 8th a transit egress 

 of the first satellite at Oh. 3m. a.m., an eclipse disappear- 

 ance of the same satelhte at 6h. 47m. 36s. p.m., and an 

 occultation reappearance of the satellite at 9h. 12m. p.m. 

 On the 9th a transit egress of the shadow of the first 

 satellite at 6h. 16m. p.m., and of the satellite itself at 

 6h. 29m. P.M. On the lOth an eclipse disappearance of 

 the third satellite at 9h. 9m. 30s. p.m. ; an occultation 

 reappearance of the same satellite at llh. 21m. p.m. On 

 the 11th an eclipse disappearance of the first satellite 

 at 6h. 8m. 10s. a.m. On the 13th a transit ingress of 

 the shadow of the second satellite at Oh. 27m. a.m. ; of the 

 satellite itself at Oh. 47m. a.m. ; a transit egress of the 

 shadow of the second satellite at 2h. 48m. a.m. ; of 

 the satellite itself at 8h. 2m. a.m. ; a transit ingress of the 

 shadow of the first satellite at 5h. Im. a.m., and of 

 the satellite itself nine minutes later. On the 14th an 

 eclipse disappearance of the first satellite at 2h. 13m. 47s. 

 A.M. ; an occultation reappearance of the satellite at 

 4h. 30m. A.M. ; an eclipse disappearance of the second 

 satellite at 7h. 25m. 42s. p.m.; its reappearance from 

 occultation at 9h. 52m. p.m. ; a transit ingress of the 

 shadow of the first satellite at llh. 30m. p.m., and of 

 the satellite itself at llh. 36m. p.m. On the 15th a transit 

 egress of the shadow of the first satellite at Ih. 42m. a.m. ; of 

 the satellite itself five minutes later ; an eclipse disappear- 

 ance of the first satellite at 8h. 42m. 29s. p.m., and its 

 reappearance from occultation at lOh. 56m. p.m. On the 

 16th a transit ingress of the shadow of the first satellite at 

 5h. 58m. p.m. ; of the satellite at 6h. 2m. p.m. ; a transit 

 egress of the shadow at 8h. 11m. p.m., and of the satellite 

 at 8h. 13m. p.m. On the I8th an eclipse disappearance of 

 the third satellite at lb. 10m. 303. a.m., and its reappear- 

 ance at 2h. 43m. 21s. p.m. On the 20th a transit ingress 

 of the second satellite at 3h. 2m. a.m. ; of its shadow at 

 81i. 5m. a.m. ; a transit egress of the satellite at 5h. 17m. 

 A.M., and of its shadow at 5h. 25m. a.m. On tl;e 21st an 

 occultation disappearance of the first satellite at 4h. 3m. 

 A.M., and its eclipse reappearance at 6h. 16m. lOs. a.m. ; a 

 transit egress of the shadow of the third satellite at 51i. 3m. 

 P.M. ; an occultation disappearance of the second satellite 

 at Oh. 49m. p.m. On the 22nd an eclipse reappearance of 

 the second satellite at Oh. 14m. 47s. a.m. ; a transit ingress 

 of the first satellite at Ih. 19m. a.m. ; of its shadow at 

 lb. 24m. P.M. ; a transit egress of the first satellite at 3h. 30m. 

 A.M., and of its shadow at 3h. 37m. a.m. ; an occultation 

 disappearance of the first satellite at lOh. 29m. p.m. On 

 the 23rd an eclipse reappearance of the first satellite at 

 Oh. 45m. 323. a.m. ; a transit egress of the third satellite 

 at 6h. 25m. p.m. ; of its shadow at Oh. 44in. p.m. ; a transit 

 ingress of the first satellite at 7h. 45m. p.m. ; of its shadow 

 at 7h. 53m. p.m. ; a transit egress of the first satellite at 

 9h. 50m. P.M., and of its shadow at lOh. 5m. p.m. On the 

 24th an occultation disappearance of the first satellite at 



