41 *

Dec. 23 25

3670

New Variable Star in Lyra.

2 2 h 2m1

2 1 59.2

4 1 2

Jan. 2

4 6 8

10

I4 16 18

1 2

The approximate place of North

RA. = 1 8 ~ 3 2 ~ 5 1 '

this star for 1855 is

Decl. = +43O49:6

There are several small stars near this place, but the diagram will show clearly the position of the variable, which at maximum attains a (photo- graphic) magnitude ofabout IO'I,, and at minimum descends below I 2 magnitude. South

Below are the estimated magnitudes derived from photographs taken with a 4.4in. portrait lens. In making these estimates, the photographic magnitude of the star just south preceding the variable was assumed to be 10 .5 , and

Hove, 1900 Oct. 2.

39.4 31.7 22.7

I 2.4 2 1 8.9

35.0 21.3

2 0 7.6

2 0 48.3

that of the star nearly midway between BD. +43?3025 and BD. +43?3029 to be 1 1 . 0 .

Date Time Mag.

Dec. 31 6 '1, I 0.9 1900 Sept. 2 I 4% I 0.8

' 3 1 4% I 0.65 n 18 I4 I 1.6

'9 13'12 I 1.9 8 2 1 1 3'12 1 2 . 0

2 3 I 3'10 < 12

1899 Sept. 28 I 2 h 12 .0

It would appear from the above observations that the star was at a maximum a day or two later than Sept. 3, 1900; and that it was near a maximum on Dec.31, 1899. There is no certain trace of the star on the last plate, although stars down to about 12 mag. are distinctly shown.

A. Stan@ WiIIiam.

Ephelneride des Brorsen'schen Cometen.*) oh M. 2. Berlin.

Die nachstehende Ephemeride ist mit den Lamp'schen ftir die Erscheinung I 895 osculirenden Elementen ge- rechnet worden. Die seither eingetretenen Sttirungen k6nnen nicht gross gewesen sein, so dass ihre Nichtberucksichtigung den Ort nicht sehr verMIschen wird.

1900

Nov. 23 2 5 2 7

29 Dec. I

3 5 7 9

'3 ' 5 ' 7 '9

'3

I 1

2 1

a

~ 2 ~ 1 7 m 8 16.6 15.5 I 4.6 I 3.8 13.1 12.5 I 1.9 I 1.3 I 0.6

8.8 9.8

6.3 1.7

4.4 2 2 2.1

d .

- 53" 54' 53 ' 7 52 39 5' 59 51 18 50 35 49 50 49 3 48 14 47 23 46 29 45 32 44 32 43 28 42 2 0

-41 6

log Y

0.069 I

0.0487

0 . 0 2 7 I

0.0044

9.9806

9,9557

9.9298

9.9031

log A

9.9500

9.9373

9.9227

9.9059

9.8866

9.8645

9.8392

9.8 104

1900-011 a

Einer Aenderung von M um i 4 , u entsprechen die Aenderungen

Aa A8 Aa A8

d ~~

-41' 6' 39 46 38 '9 36 45 35 0

33 4 30 54 2 8 30 2 5 49 2 2 54 '9 44 16 24 1 2 59 9 31 6 26

- 3 2 8

~~

log r

9.8761

9.8494

9.8241

9.80 16

9.7835

9.7 7 1 7

9.7676

9.7717

log A

9.1179

9.7419

9.1037

9.6659

9.6338

9.6146

9.6146

9.6340

4 - 2 3 +lOI' +15mi +52' +59?3 - 2 2 0 ' 1900 Nov. 2 7 ~ - 1900 Dec. 2 1 ___ ___ 1901 Jan. 16 -___

-5431 -124' -26qPo -79' -66915 +302'

- I : r'As

4.9

8.8

14.6

I 7.2

Berlin, Kgl. Recheninstitut, 1900 Oct. 16. A. Bcrberich.

*) Die Ephemeride ist mehreren Sternwarten der sildlichen Halbkugel im Voraus mitgetheilt worden. KY.

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