1900

+im39Szo + I 26.97 +o 0.82

+o 15.13 - o 6.90 -0 19.14

April 24 2 4 26 26 2 7 2 7

+ 8' 415 + I O 1 0 . 0

- 8 10.4

+ 9 57.7 + 7 33,8 + 9 40.0

M. Ortszeit

I Ih34m45' 1 1 34 45 '0 24 4 1 0 40 48 10 35 59 10 35 59

+0°32' 870 +o 32 4.5 +o 31 55.6 +o 31 52.2 +o 31 37.4 +o 31 34.6

0.854 0.854 0.854 0.854 0.854 0.854

Vgl. I Gr.

3.6 3.6 8.8" 8 . 2 * 8.8" 8.8*

- - - - - -

-oo 6'581'1 +o 31 47.3 +o 26 35.1

Red. ad 1. app.

+3:01 -18Y8 +3.01 -18.8 +3.01 -18.7 + j .o r -18.8 +3.00 -18.7 +3.00 -18.7

Sj. 4606 M, 8281, M, 4520 MI 8147, M, 4468, Harv.Z.

Der Planet erschien bei meist undurchsichtiger Luft ziemlich schwach, etwa 12'"; der Dec1.-Anschluss an * 14 Die Hinzufugung eines * in der Columne aVgl.0: bedeutet, am 26. April wurde durch Bewolkung fruhzeitig unterbrochen.

dass auch der RA.-Unterschied mikrometriscli gemessen ist.

M i t t l e r e O e r t e r d e r Vergleichsterne. - 1 - I

2

3

4 5 6

* 1 a 1900.0 I a I9oo.o I 6 1900.0 1 Autoritat

I g h 4 1"3 216 5 1 2 32 4.37 1 2 2 5 22.97

12 32 4.81 1 2 1 2 1 7 . 1 1

1 2 2 7 52.17

7 8 9

I 0

I 1

1 2

73 14

I Z h 2 l'"39103 1 2 2 1 26.59 1 2 2 1 53.88 1 2 16 30.81 1 2 1 5 8.50 1 2 2 1 53.71 1 2 2 1 26.59 I 2 2 1 39.15

Autoritat d 1900.0 1 +oo 2 2 ' 13~41'/, (ParI+zPara+3Par,+Ml) + o 24 19.3 M, 8054 +o 40 23.8 '11 (M, 8069 + W, 312) +o 23 51.4 1 ' j 4 (M, + W, + 2 Sj.) + O 24 39.6 +o 40 24.7 AG.Alb. 4490 +o 24 22.3 M, 8054

'12 (MI 7929 + W, 2 0 1 )

+ O 2 2 13.3 I ' I2 (MI 8062 + Gott, 3178)

Elemente des Planeten 1900 FC. Aus der ersten Heidelberger Beobachtung vom 29. Marz (A. N. 3634), der romischen vom I I. April (A. N. 3635)

und zweier Beobachtungen vom 20. April, welche Herr Dr. Villiger mir mitgetheilt hat, ergaben sich folgende Elemente des Planeten 1900 FC"):

Epoche 1900 April 20.5 M. 2. Berlin.

cp = 4 O 36' 281'9 p = 826!'396

lkf = 2 1 " 34' 2 9 y I

Q) = 139 10 56.9 8, = 3' 2.3 I I 9 O O . O logs = 0.421885

z = 6 57 52,3

Berlin, Kgl. Rechen-Institut, I 900 April 24. A. Beyberich.

*) Die miteingesandte Ephemeride von April 28 bis Mai 30 ist einer grosseren Anzahl von Sternwarten brieflich mitgetheilt worden. KP.

New Variable Star in Auriga. A star not entered in the BD. whose place for 1855 is

RA. == 6ho?9 Decl. = +50" 14'

has proved to be variable. The changes in its brightness have been as follows, BD. +so01 2 7 5 being estimated as 8m5, and BD. +49?1464 as 8mg: 1900 April I, 8m6; April 1 1 , 8lf4; April 16, 17, 19 and 2 0 , 8m2; April 2 7 , 8?3; May 3, 8m3 ; May 5, 8?4 ; May 15, 8416; May 23, 8m8.

The RA. and Decl. given above may be wrong to the extent of 0911 and 1', but the variable may be easily identified if one bears in mind that it lies in a straight line with two stars of 10910 and 10453 respectively, the former at a distance of about 4' on the s. p. side with a position-angle of about 2 too, the latter at a distance of about 7' on the n. f. side. After the BD. stars, these two are the brightest in the vicinity of the variable.

Edinburgh, 21 East Claremont Street, 1900 May 24. Thmas D. Anderson.