I 7 3

4 , o 26 I3

373

1 2 ~ M. Z. Ber l in .

, +36 40.1

I74

l ogy 1 l o g d

3.2067 19.9349 2063 9279 2060 9209 2057 9x39 2055 9069 2053 8999 2051 8930 2050 8862 2049 8794 2049 8727

0.2050 9.8662

1901

Sept. 8 ~-

10

I 2

I4 16 18 2 0 2 2

24 26 28

38 34 38 57 39 '3 39 24 39 28 39 28 39 23 39 I 4 39 2

o 38 46

35 20.5 ' 2 0 5 0

34 50.5 2050 34 17.0 2051

33 40.0 2052

32 59.5 2054 32 15.6 2056 3' 28.4 2059 30 37.8 2062 29 438 2065

-1-28 46.3 0.2069

1901 a d log Y log A 1901 a log Y log A Q

t36O 40!1 36 19.2 35 5 5 . 1 35 27.6 34 56.8 34 22.5 33 44.7 33 3.4 32 18.5 31 30.0

+30 37.9

Aug. 1 5 I 7

'9

23 25 21

29 3'

Sept. 2

21

Oh 13m50s '5 36 I 7 ' 5 18 47 2e 13 21 31 22 42

24 42 25 3'

23 46

+37" 3'!9 37 38.0 .37 41.8 37 43.3 37 42.4 37 39.0 37 32.9 37 24.1 37 12.4 36 57.8

0.2080

0.2071

0.2064

0.2058

0.2054

0.205 I

9.9446

9.9306

9.9166

9.902 7

9.8890

9.8155

Sept. 4 6 8

I 0

I2

14 16 18 20 2 2

oh 26"13~ 26 48 27 16 27 38 27 53 28 3 28 7 28 6 28 I

27 5 2

0.205 I

0.2050

0.2050

0.2052

0.2055

0.2060

9.8755

9.8625

9.8502

9.8389

9.8287

9.8202 Einer Aenderung d M = + I ,U entsprechen die Variationen:

da = +4m8 dd = -555 am 15. August - 1.5 a m 16. September. = +6.1 - -

Der Planet scheint jetzt noch sehr schwach zu sein; photographische Aufnahmen zu Heidelberg haben seine Bahn- spur nicht erkennen lassen. Falls die Nizzaer Beobachtung vom 16. Marz 1896 der Ingeborg nicht angehort, mtisste der Ephemeridenrechnung das von Herrn Coniel aus der

I. Erscheinung abgeleitete Elementensystem (Bull. Astr. I 3, 65) zu Grunde gelegt werden, dessen Unsicherheit bei der jetzigen Erdnahe des Planeten den berechneten Ort sehr ungtinstig beeinflusst.

A. Beyberich. Berlin, Kgl. Recheninstitut, I 90 I Juli I 2.

Znaatz dea Heranegebers. Auf Anregung von Herrn A. Berberich hat Dr. P. V. Neugebauer mir am I 5. Juli die folgende Ephemeride des Planeten, gerechnet mit den Elementen von Coniel in R. A. 13 p. 65, eingesandt.

- log A

?.8662 8598 8535 8475

8364 8313

8418

8266 8224 8187

9.8151

6 .

-1-37" 29:s

37 31.3 37 28.1 37 22.2

37 2.1 36 47.7

36 10.3

37 3'3

37 13.6

36 30.5

+35 47.1

1901

Aug. 19

23 25 27

29 31

Sept. 2

4 6 8

21

a

oh 2 6m2 2s 28 9 29 48 31 I 7 32 38 33 5' 34 57 35 55 36 46 37 29

0 38 5 4ug. 19: Gr. 1 1 . 7 RA. + i m L A . T o l 7 Sept, 28: Gr. I 1 . 1 RA. &- im Decl. +0!6 K Y .

New Variable Star 176.1901 Ophiuchi. This star, which is not included in the BD., has the

-following approximate place for I 855.0 : RA. = 17h49m39S Decl. = + I I' 1 1 ' .

On 1900 Oct. 29 it was om1 brighter than BD. + I 103296, whose magnitude may be estimated as 9.7. On Nov. 9 it had risen to an equality with BD. + I 103293, to which may be assigned the magnitude given in the AG.

Leipzig I Catalogue, namely 9.2. On the latter occasion it must have been at or near a maximum, for on a hazy night about a week later it was again, as nearly as I could make out, equal to 3293. Owing at first to unfavourable weather and afterwards to other causes, I was unable to examine again this region of the heavens till yesterday, when the variable was invisible in a 3 inch refractor, although a ~ o m r star which precedes 3296 by about 7" on almost the same parallel could be seen without difficulty.

Edinburgh, 2 1 East Claremont Street, 1901 July 1 6 . Thomas D. Anderson.