THE FACE OF THE SKY FOR MARCH. 



By A. C. D. CKOMMELIN, B.A., D.Sc, F.R.A.S. 



Dale. 



Greenwich 

 Noon. 



Sun. 

 R.A. Dec. 



h. m. 



22 51-1 



2 3 9'7 

 23 28*1 

 23 46-4 



o 4-7 



O 22*8 



7 3 

 5'4 

 3 '4 

 x '5 



°'5 

 2 '5 



Moon. 

 R.A. Dec. 



h. In. o 



18 51-1 S. 28'i 

 22 52'o S. 9-4 

 2 30-1 N.i8'2 

 7 '7'5 N.27> 

 12 5'I S. 0-4 

 16 40*1 S. 27-2 



Mercury, 

 R.A. Dec. 



h. m. 

 23 45-0 



S. 



I2'2 N. 



16 



2-6 

 5'8 

 7-6 



v 34 '7 7 '5 



o 22*5 N. 5*8 



Venus. 

 R.A. Dec. 



h. 1 

 I 33 



N.ij-4 

 I5'4 

 ■7'( 

 18-9 



20'2 



N.21'2 



Jupiler. 

 R.A. Dei 



h. m. o 



18 52-0 S.22'8 



18 55-5 22-7 



18 588 22-6 



19 I'9 22'6 



19 4-7 22-5 



19 7-3 S.22'4 



Saturn. 

 R.A. Dec. 



h. m. 

 3 45'3 

 3 40-6 

 3 48-0 

 3 49-6 

 3 51 '3 

 3 S3' 2 



N.lS'5 



Neptune. 

 R.A. Dec. 



h. m. 



41-1 

 40-7 

 4°' 5 

 40*2 

 40*1 

 39 '9 



N.20-9 



20'9 



20 '9 



2I"0 



21 "O 



N.2I-0 



Table 11. 



Table 12. 



P is the position angle of the North end of the body's axis measured eastward from the North Point of the disc. B, L 



are the helio-(planeto-)graphical latitude and longitude of the centre of the disc. In the case of Jupiter Lj refers to the 



equatorial zone, L 2 to the temperate zone, T,, T 2 are the times of passage of the two zero meridians across the centre of the 



disc ; to find intermediate passages apply multiples of 9 h 50i m , 9 h 552 m respectively. 



The letters m, e, stand for morning, evening. The day is taken as beginning at midnight. 



The Sun continues his Northward march. It crosses the 

 Equator 21 d 5 h 18™ m, when Spring commences. Sunrise 

 during March changes from 6-51 to 5-42; sunset from 4-43 

 to 5-35. Its semi-diameter diminishes from 16' 10" to 16' 2". 



Mercury is an evening star till the 27th. It is well-placed 

 for Northern observers. Illumination four-fifths at beginning 

 of month, zero on 27th. Semi-diameter increases from 3" to 

 Si". 



Venus is an evening Star, having passed its greatest 

 elongation on February 12th. Illumination diminishes from 

 f. to J, semi-diameter increases from 15" to 23". The planet 

 is very favourably placed for observation by Northern 

 observers till the end of the month, when the crescent grows 

 narrow. Greatest brilliancy attained 19 d 3 h e. 



The Moon.— New 8 d h 22 m m ; First Quarter 15 d 8 h 58 m e ; 

 Full 22 d 11" 56 m m; Last Quarter 29 d ~0 h 58 m e. Apogee 



Table 13. Occultations of stars by the Moon visible at Greenwich. 



The asterisk indicates the day following that given in the Date column. 

 From New to Full disappearances take place at the Dark Limb, from Full to New reappearances. 

 Attention is called to the occultation of the Pleiades on March 13th and that of Spica on the 23rd. 



57 



