238 



KNOWLEDGE 



[October 1, 18fl4. 



5h. 25m. P.M., or 20m. after sunset, with a northern 

 declination of 8° 52', and an apparent diameter of 21-7". 

 On the 2'2nd he rises at 4h. olm. p.m., as the Sun sets, 

 with a northern declination of 8° 27', and an apparent 

 diameter of 21'3", being now at his brightest (star magni- 

 tude — 2-3). On the 31st he rises at 4h. 7m. p.m., with a 

 northern decUnation of 8' 1', and an apparent diameter of 

 20'4". During October Mars describes a retrograde path 

 fi-om the confines of Cetus and Aries into Pisces, being 

 about 20' south of the 4ird magnitude star Piscium on 

 the night of the 24th. At about 9h. 20m. p.m. on the 17th 

 a 10| magmitude star wUl be about j ' south of the planet's 

 limb. 



Jupiter is an evening star, and is becoming well placed 

 for obseiTatiou. On the 1st he rises at 9h. 23m. p.m., 

 with a northern declination of 22° 59', and an apparent 

 diameter of 39;|^", the phase on the p limb amounting to 

 0-4". On the 8th he rises at 9h. Im. p.m , with a 

 northern declination of 22° 59', and an apparent diameter 

 of 40-1". On the 17th he rises at 8h. 28m. p.m., with a 

 northern declination of 22° 58', and an apparent diameter 

 of 41^". On the 22nd he rises at 8h. 7m. p.m., with a 

 northern declination of 22° 58', and an apparent diameter 

 of 41-9". On the 31st he rises at 7h. 83m. p.m., or 3h. 

 after sunset, with a northern declination of 22° 59', and an 

 apparent diameter of 43", the phase amounting to 0-3". 

 During the month he is almost stationary in Gemini, a 

 little to theX.E. of /x Geminorum. The following pheno- 

 mena of the satellites occur whUe the Sun is 8° below and 

 Jupiter 8° above the horizon : — On the 2nd an eclipse dis- 

 appearance of the first satellite at 5h. 15m. 15s. a.m., a 

 transit ingress of the shadow of the third satellite at 

 llh. 24m. P.M. On the 3rd a transit egress of the shadow 

 of the third satellite at 2h. Om. a.m., a transit ingress of 

 the shadow of the first satellite at 2h. 32m. a.m., a transit 

 ingress of the satellite itself at 3h. 51m. a.m., a transit 

 ingress of the third satellite at 4h. 41m. a.m., a transit 

 egress of the shadow of the first satellite at 4h. 47m. 

 a.m., and an eclipse disappearance of the first satellite 

 at llh. 43m. 38s. a.m. On the 4th an occultation reap- 

 pearance of the first satellite at 3h. 16m. a.m., and a 

 transit egress of its shadow at llh. 16m. p.m. At midnight 

 on the 4th a lOi magnitude star will be between the 

 second satellite and the pla'iet, 1-1' /' Jupiter's centre, 

 almost on the parallel. On the oth a transit egress of the 

 first satellite at Ob. 3Gm.A.M.;at midnight a lOi magnitude 

 star will be between the third and fourth satellites. On 

 the 6th a transit ingress of the shadow of the second 

 satellite at Oh. 15m. a.m., its transit egress at 2h. 48m. a.m., 

 and a transit ingress of the satellite itself at 2h. 54m. a.m. 

 On the 8th an occultation reappearance of the second 

 f-atellite at Oh. 32m. a.m. On the 10th a transit ingress of 

 the shadow of the thi'd satellite at 3h. 23m. a.m., and a 

 transit ingress of the shadow of the first satellite at 

 4h. 26m. A.M. On the lltb an ecUpse disappearance of 

 the first satellite at lb. 37m. 3s. a.m., and its occultation 

 reappearance at oh. 8m. a.m. ; a transit ingress of the 

 shadow of the first satelhte at lOh. 54m. a.m. On the 

 12th a transit ingress of the first satellite at Oh. 12m. 

 a.m., a transit egress of its shadow at Ih. 10m. a.m., and 

 of the satellite itself at 2h. 28m. a.m. ; its occultation 

 reappearance at llh. 36m. p.m. On the 13th a transit 

 ingress of the shadow of the second satellite at 2h. 49m. 

 A.M., its egress at 5h. 23m. a.m., a transit ingress of the 

 satellite itself one minute later, and an occultation dis- 

 appearance of the third satellite at lOh. 17m. p.m. On 

 the 14th an occultation reappearance of the third satellite 

 at Ih. 4m. a.m. ; an eclipse disappearance of the second 

 satellite at 9h. 55m. 23s. p.m. On the 15th an eclipse 



reappearance of the second satellite at Oh. 23m. 9s. a.m., its 

 occultation disappearance at Oh. 27m. a.m., and its occulta- 

 tion reappearance at 3h. 3m. a.m. On the 18th an eclipse 

 disappearance of the first satellite at 3h. 30m. 30s. a.m. 

 On the 19th a transit ingress of the shadow of the first 

 satellite at Oh. 48m. a.m., a transit ingress of the satellite 

 itself at 2h. 3m. a.m., a transit egress of its shadow at 

 3h. 4m. A.M., of the satelhte itself at 4h. 19m. a.m., and 

 its eclipse disappearance at 9h. 58m. 51s. p.m. On the 

 20th an occultation reappearance of the first satellite at 

 ]h. 27m. A.M., a transit ingress of the shadow of the 

 second satellite at oh. 24m. a.m., a transit egress of the 

 shadow of the first satellite at 9h. 32m. p.m., and its 

 transit egress at lOh. 46m. p.m. ; an eclipse reappearance 

 of the third satellite at llh. 42m. 5.")S. p.m. On the 21st 

 an occultation disappearance of the third satellite at 

 2h. 3m. A.M., and its reappearance at 4h. 51m. a.m. On 

 the 22nd an eclipse disappearance of the second satellite at 

 Oh. 31m. 4s. A.M., and its occultation reappearance at 

 5h. 32m. A.M. On the 23rd a transit egress of the shadow 

 of the second satellite at 9h. 15m. p.m., and a transit egress 

 of the satellite itself at llh. 42m. p.m. On the 25th an 

 eclipse disappearance of the first satellite at 5h. 24m. Is. 

 A.M. On the 26th a transit ingress of the shadow of the 

 first satellite at 2h. 42m. a.m., of the satellite itself at 

 3h. 53m. A.M., a transit egress of its shadow at 4h. 58m. 

 A.M., and an eclipse disappearance of the satellite at 

 llh. 52m. 23s. p.m. On the 27th an occultation re- 

 appearance of the first satellite at 3h. 16m. a..m., a transit 

 infjress of its shadow at 9h. 10m. p m., a transit ingress of 

 the satellite itself at lOh. 20m. p.m., and a transit egress 

 of its shadow at llh. 26m. p.m. On thg 28th a transit 

 egress of the first satellite at Oh. 36m. a.m., an eclipse dis- 

 appearance of the third satellite at Ih. 11m. 36s. a.m., its 

 eclipse reappearance at 3h. 42m. 52s. a.m., its occultation 

 disappearance at 5h. 45m. a.m.; an occultation reappearance 

 of the first satellite at 9h. 43m. p.m. On the 29th an 

 eclipse disappearance of the second satellite at 3h. 6m. 39s. 

 A.M. On the 30th a transit ingress of the shadow of the 

 second satellite at 9h. 16m. p.m., a transit ingress of the 

 second satelhte at llh. 30m. p.m., a transit egress of its 

 shadow at llh. 50m. p.m. On the 31st a transit egress of 

 the second satellite at 2h. 7m. A.m., and a transit egress 

 of the third satellite at lOh. 33m. p.m. The following 

 are the times of superior and inferior conjunctions of the 

 fourth satellite with the centre of the planet : — Superior, 

 October 9th, Ih. 36m. p.m. ; October 26th, 6h. 30m. a.m. 

 Inferior, October 17th, lOh. 34m. p.m. 



Both Saturn and I'ranus are invisible. 



Neptune is an evening star, and is becoming well 

 situated for observation. He rises on the 1st at 8h. 14m. 

 P.M., with a northern declination of 21^ 12', and an 

 apparent diameter of 2-6 ". On the 31st he rises at 6h. 13ni . 

 P.M., with a northern declination of 21" 8', and an apparent 

 diameter of 2-7". During October he pursues a retrograde 

 path in Taurus, being very near the 4| magnitude star 

 ( Taun during the whole of the month. A map of the 

 stars near his path will be found in the KniiUsli Mechanic 

 for September 7th, 1894. 



October is a fairly favourable month for showers or 

 shooting stars, the most marked display being that of the 

 Orionids on the 18tlj, the radiant point being in VI. h. 8m. 

 R.A., and + 15°. 



The Moon enters her first quarter at 7h. Im. p..m. on the 

 6th; is fuU at 6h. 41m. p.m. on the 14th ; enters her last 

 quarter at 6h. 56m. p.m. on the 21st ; and is new at 

 5h. 57m. P.M. on the 28th. She is in apogee at 2h. a.m. 

 on the 8th (distance from the earth 251,320 miles), and 

 in perigee at Ih. p.m. on the 22nd (distance from the 



