- ah -

I

2

3 4 5 6 7 8 9

I 0 I 1

I 2

13 14 I 5 16 I f I 8 I 9 2 0

' 5 3 985

P o s i t i o n s m o y e n n e s d e s C to i l e s d e c o m p a r a i s o n .

16

8h51m32'52

8 45 35.49

9 24 6.56

8 48 29.41

8 40 54.02 9 2 7 1.28

9 24 41.51 9 2 1 1 0 . 2 0

9 15 17-90 6 36 48.91

1 2 13 38.86 1 2 1 1 12.38 12 3 24.23

11 53 5 2 . 2 5 I 1 2 0 52

11 2 5 1 . 3 6 11 I 20.68 12 16 1.65

6 44 31-25

I 1 5 7 56.20

4 - 2 2 " 13'44:'6 -1-22 40 3.8 + 2 2 35 6.6 + 2 2 42 9.5 + o 3 2 13.6 + I 29 40.6 4- 1 39 57.3 + 2 5 45.7 i- 4 7 36-5 -+-I7 44 24.7 4 - 1 7 42 0.3 - 2 29 16.5

- I 33 22.8

- o 29 5 1 . 2

-13 31 -12 3 56.8 - I I 13 48.3 + 7 6 1 7 . 2

- 2 28 38.9

- 0 53 59.8

AutoritC

AG. Berlin B. 3603 )) % 2 3581 w 9 2 3561 w )) w 3534

BB.VI 2 5 2 8

AG. Albany 3791 2 )) 3793 )) )) 3779 w )) 3740

AG. Berlin A. 2329 3 )) )P 2417

M, 7884 M1 7830 AG. Nicolajew 3360

> 2 3343 Mi 7443

W, 1091 W, 1062 AG. Leipzig I1 6092

BD. - I 303364

- * -

2 1

2 2

23 24 2 5 26 2 7 28 29 30 31 32 33 34 35 36 37 38 39

a 1904.0

12~13"' 1518 1 2 6 37.21 1 2 5 46.14 16 2 6.57 16 o 50.96 16 0 52.32 ' 5 52 59.88 I 5 30 5 7 - 1 0

'5 30 4.48 1 5 15 3.01 ' 5 2 5 7 . 7 2 I 4 54 6.69 14 5' 29-71 I 4 48 10.35 14 '9 35.56 J 3 54 32.52 13 36 51.08 13 28 20.95 I 3 48 37.81

6 1904.0 ~ ~~

+ 7"35'57!9 + 7 54 13.8 f 8 9 4.3 + 5 2 59 14.8 4-53 28 47.4 +53 41 58.4 +54 18 33.6 + 5 5 37 16.3 +55 54 19.9 +57 I 4 5 1 . 2

+ 5 7 29 1.4 + 5 7 2 5 48.1 + 5 7 33 23.2 +57 48 16.8 +58 6 44.2 + 5 7 55 5.1 + 5 7 41 31.9 + 5 7 1 7 20.2

+ 1 8 24 20.4

New variable star 187.1904 Persei. 1855: RA. = 3h21m I~ Decl. = +3g0 914 BD. +39?797 9915.

According to observations of this star made with a 61I2-in. reflector on 31 nights between Aug. 2 and Nov. 28, a minimum occurred on I 904, Sept. 19. It was then I 0.8 mag., being 0.1 mag. fainter than a star which lies about 21/a'

north preceding the variable. I t is at present about mag. brighter than BD. -1-390803 (9.5), the magnitude of which I have assumed to be 10.0, and is apparently approaching a maximum. There are also available. the foliowing rough photographic magnitudes: 1901 Jan. 1 5 10.7, Jan. 2 5 I 1.3, Febr. 11 11.1, Febr. 2 0 1 1 . 0 , Mar. 2 2 11.4, April 14 10.65, Dec. 18 1 1 . 5 ; 1902 Mar.4 1 1 . 0 , Mar.5 10.8, Dec. 29 11.1;

1903 Jan. 2 10.8, Mar. 3 9.3, and 1904 Jan. 19 10.4f . These magnitudes are based on the assumptions that the photographic magnitude of BD. +390803 is 10 .2 , and the value of a step 0.05 mag. There are in addition four visual observations made in the early part of March of this year with a ~ 3 / ~ - i o . refractor. These show that the variable was

AutoritC ~

AG. Leipzig I1 607 I > o w 6037 B )) )) 6033

AG. Ham. 49 I I > 4903

4904 )5 )) 4869

AG. Hels. 8408 )) 8402

)) 8302

)) )) 8183 D > 8 2 2 7

)) r? 8 1 7 2 2 )) 8149 )) )) 7949 )) * 7 7 7 2 )) )) 7657 i9 2 7608

AG. Berlin A. 5 0 4 0

then near a minimum and probably decreasing in brightness, but the star was so faint in this telescope that the obser- vations were discontinued.

From the above photographic observations it may be concluded that a minimum occurred about 1901 Mar. 5 ; and, but with less certainty, another one about 1902 Jan. 24. The whole of the observations, excepting the last photo- graphic one, are quite satisfactorily represented by the foll- owing elements:

Minimum = 1904 Sept. 19 (J. D. 2416743) + 161d7 E. The last photographic observation makes the star rather

fainter than it should have been, but this plate is a very poor one, the images of the smaller stars being large and diffuse. The minimum visual brightness of the variable is 10.8, the maximum brightness probably about 91/9. The next maximum should occur on the gth of the present month, if it falls midway between two minima.

____.. Hove, 1904 Dec. 2. A. Stanlty WiZZiams.

Planet 1904 PK, 1904 Dez. 4 1 4 ~ 2 7 ~ 3 9 ~ M. Z. Wien a app. = 4 h 5 3 m ~ 3 ? 6 6 (9.423) 6 app. = +27"24'4!'5 (0.561). y. Palisa.

Enckescher Komet 1904 b. 1904 Dez. 8 8h3m46s M. 2. Utrecht Aa = +1"7?75 Ad = -+53!l7 Vergl. 8.4 a app. = 2 0 ~ 4 6 ~ 2 2 ? 1 1 (9.520) 6 app. = +5"12'29!5 (0.827) Red.adloc.app. = + 1 ? 7 0 +21:'5 Vergleichstern (1904.0): a = 2 0 ~ 4 5 ~ 1 2 ? 6 6 6 = +s9 I I ' 14!'3 (AG. Albany 7289 + Leipzig I1 10391) Beob. v.d.Bilt. GroDe des Kometeu 7m5. Im Binokel sehr deutlich sichtbar. Korrektion der Ephemeride (A. N. 3981) t - 4 1 ~ + 112. A. A. N@Zand.

I n h a l t zu Nr. 3985. B. Meymann. Resuitate aus den Beobachtungen von 8 Cephei. I. - y. Pidoux. Combte I904 I. 5 . - E. MiCosmich. Osservazioni di pianeti e della cometa 1904 I. 7. - C. Rambaud, F. Sy. Observations de planbtes et de combte. 9. - A. StanZey WiZZiunts. New variable star 187.1904 Persei. 1 5 . - Kleine Mitteilungen. 15.

wescniossen 1904 H e r . 12. nerausgeoer: n. a r e u c z . U ~ U C K von b. D cnaiar. wxpeaicion: nim, iriemaunsweg 103.