I59 4450

Nov. 6 8

1 2

I4 16 18

2 2

24 26 2 8 3 0

Dez. 2

4 6 8

I 0

2 0

I 60

0 ~ 3 4 ~ 3 7 ~ +3r0 26!3 33 5 5 3 ' 7.7 33 2 0 30 46.9 3 2 5 2 30 26.1 32 37 30 5.4 32 18 29 44.8 32 I 2 29 24.4 32 I 4 29 4.4 32 23 2 8 44.7

33 2 28 6.5 33 32 2 7 48.1 34 9 2 7 30.3 34 53 2 7 13.0 35 44 26 56.4 36 42 26 40.5

0 31 44 1 +26 2 5 . 5

32 39 28 25.4

Elemente und Ephemeride des Planeten 1910 KU. Die Bahn wurde berechnet aus den 4 Beobachtungen Rom Okt. 5 , 8 und 2 Meridiankreis-Beobachtungen von

I

Dr. Couruoisier von Okt. I 5 und I 7 . Epoche 1910 Okt. 5 .5 M. Z. Berlin.

M = 11' 30' 3413

6b = 2 8 2 5 7 19.6 I 1910.0

'p = 11°32'351'3 p = 672Y729

log (1 = 0.481444 1 w = 8 0 1 2 52.5

i = .16 36 35.8 J E p h e r n e r i d e f u r 1 2 ~ M. Z. Ber l in .

1910

Okt. 5 7 9

'3 ' 5 7 7

'9

23 2 5

2 7

29 3'

Nov. 2

4 6

I 1

2 1

a 1910.0

o h 5 7" 1 8 5 5 5 34 53 5 0 5 2 7 5 0 2 5 48 45 41 6 45 3 0 43 5 7 42 28 41 .4 39 45 38 31 37 23 36 2 1

35 26 0 34 37

d 1910.0

-+ 3 5' 2 7.'5 35 20.9 35 12.8 35 3.3 34 52.5 34 40.5 34 27.3 34 13.0 33 57.7 33 .41 .4 33 24.3

32 47.7 33 6.3

32 8.8 3 2 28.5

31 48.1 +31 28.3

log .I

0.182

0.182

0.184

0.189

0.198

Berlin, Kgl. Rechen-Institut, 19 10 Okt. z I .

1910 1 a rg1o.o I d 1910.0

Notes on Variables. N o v a 98.1910 A r a e .

A new star whose approximate position is RA. rGh3 ~"'4' Decl. - 52' 1016 (187 5) was discovered by Mrs. Fleming in the constellation Ara, on Oct. 13, 1910. It appears on 2 1

photographs taken at Arequipa with the 8-inch Bache and I-inch Cooke telescopes between April 4, 1910 and Aug. 3, 1910. The magnitude has been estimated as varying from 6mo to ~ o m o between these dates. The spectrum is quite faint but shows, on three plates, the bright lines, 5007, HB, 4670, Hy, Nd, HE and Hc, one of the plates showing also the bright line Hq. Apparently this object had passed into a nebulous condition before its spectrum was photographed. The star does not appear on 44 photographs, taken between Aug. 20, 1889 and March 19, 1910, although almost all of

log n

0.198

0.2 I I

0 . 2 2 8

0.246

0.266

G. Stracke.

them show stars fainter than the twelfth magnitude, and t w o plates show stars as faint as the fifteenth magnitude.

The observations of L. Cnntfbtll show that the variable star R C o r o n a e b o r e a l i s is now rapidly diminishing in light. It attained its full brightness, 6mz2, in Sept., and al- most iininediately began to fade. Its magnitude on Sept. 2 I

was 6m5, and on Oct. 17, 9m6. As the variations of this star are very irregular, frequent observations are much to be desired.

There are only two other variables known to be of this type. One of these, SU T a u r i , which has been faint recently, has now attained full brightness, rom5. The other,. R Y S a g i t t a r i i , is now at normal brightness, .7mo.

Harvard College Observatory, Cambridge, Mass., I 9 I o Oct. 18.

(14) Siwa. Observations' at Taunton, Mass.

Edward C. Pickcri7ig.

1910 Oct. 3 1 4 ~ 13m5 Gr. 117. t. u = oh ~ 9 ~ 4 5 5 9 d = +0°33!2; 7. H. Mttca@. - Nach einer Mit-

Kb. Oct. 5 13~33Y'o Gr. m. t . .a = oh 58" 3'1 6 = + O O Z Z . ' I (1910.0). teilung von Prof. M. .Ut~lf liegt dieser Ort au0erhalb der Konigstuhl-Aufnahme von Okt. 5 (A. N. 186. I I I).

Magnitude 11"'.

I n h a l e zu Nr. 4450. R. Pragcr. Beobachtungen yon kleinen Planeten. 145. - S. Chezalier, S. J . Note sur l'occultation de l'itoile BD +~g"zogg par Jupiter observke k 26-sk le 2 1 Mai 1908. 153. - M. EM/. Ephemeride des Halleyschen Kometen 1910 c. 1 5 7 . - G. Stmcki . Elernenle und Epherneride des Planeten 1910 KU. 159. - E. C. Picitring. Notes on Variables. ,159. - J. H Metca(f. (140) Siwa. 159.

Geachlossen r g r o Okt. 29. Meranrgeber: H. K o b o l d. Druck yon C. Schaidt (Georg Oheim, Alfred Oheim). Expedition: G e l . Illoltkestr. 80.