Planet and comet observations at Windsor, N. S. Wales

2 9 3 3 907 294

0.2909,

0.3739, 0.3256,

0.3114,

0.3368, 0.2617,

0.3016, 0.3016,

0 . 2 7 3 7 ~

0.3137n

0.343%

0.3142,

Die kleinen konstanten Abweichungen +3?00 - roi'4 waren durch nochmalige kleine empirische Anderungen der Elemente zum Verschwinden zu bringen. Da die Vernach. Iassigung der Storungen wahrend 26 Jahre und die noch vorhandene Unsicherheit meiner Elemente dnderungen der Elemente vom Betrage der empirischen Korrektionen nicht unwahrscheinlich erscheinen lassen, halte ich die Identitat von 1901 G T mit ( I 56) Xanthippe fur gesichert.

Die sich in den Abweichungen vom Mittel zeigenden

Kiel, Bureau der Astr. Nachr., 1903 Juli 14.

+3?94 - 61'9

t 4 . 0 6 - 9.3 t 3 . 9 9 - 7.9

+4.07 - 9.6

+4.09 - 1 0 . 2

+4.12 -10.8

f 4 . 1 4 -11.6 f 4 . 1 5 -11.8

+4.17 - 1 2 . 7

+4.08 - 9.9

+4.14 -11 .4

t 4 . 1 5 -11.9

Sprunge, mit denen auch Herr A.Berberich nach einer giiti- gen Mitteilung bei den fruheren Versuchen, aus der Er- scheinung I 87 5 ein brauchbares Elementensystem fur ( I 5 6) Xanthippe abzuleiten, zu kampfen gehabt hat, lassen deutlich erkennen, dafl die Beobachtungen von 1875 allein zu diesem Zweck nicht geniigen ; es ist dies wohl auch, abgesehen von der kurzen Beobachtungszeit, der Grund, warum trotz viel- seitigen Suchens der Planet erst durch Zufall 1901 wieder aufgefunden worden ist.

Martin EbelZ.

1 2 45 22.48

1 2 43 36.43 I Z 4 2 44.54

I 2 4 4 31.78

Planet and Comet observations at Windsor, N. S. Wales. By yohn Tebbutt.

9,0555n - 8 3 2 43.4

9.2699, - 8 25 18.6 9.3729, - 8 2 1 41.2

9.4411n - 8 29 1 2 . 2

All the accompanying observations have been made with the 8 inch equatorial. (2 ) Pallas was observed with a filar micrometer from Dec. 10 to 23 inclusive, and sub- sequently with a square bar- micrometer. (29) Amphitrite

was observed with a filar micrometer and the comet 1902 III with a square bar- micrometer. Mr. Mer$eZd has kindly supplied the values of 1ogp.d for the comet and has also compared the planet observations with the ephemerides.

- * -

i

i

2

2

2

2

2

2

3

3 4

2

5 5 6 6

1 8 9

10

11

12

'3 ' 4 '5 16 ' 7 18 '9 2 0

1ogp.d I Red. ad 1. app. Date ! Winds.M.T. I da I A L I 902

Dec. 10 '3 I8 ' 9 2 0

2 1

23 2 5 26 26 2 7

30

'903 April 1 3

I 4

'5 16

1902-03 Dec. 23

23 2 5

2 5 26 2 7

30 30

Jan. 2

5 6 7

'9 I 0

(2) P a l l a s . 6h39m~h550 6 37 18.19 6 33 37.13 6 32 49.27 6 32 1 .15

6 31 12.35 6 29 31.61 6 27 50.85 6 26 58.16 6 26 58.45 6 26 6.38 6 23 29.46

+5" 5538 i - 3 7 . 0 2

+ 2 35.74 + I 47.87 +o 59.74 +o 10.93 - I 29.84 -3 10.62 -0 5 2 . 7 2

- 4 3.03 - - I 44.5' - I 6.87

+ 1 2 ' 201'7

- 6 15.2

- 4 28.6 - 7 14.1

- 9 23.5

- 1 2 31.7 - I 2 0.5 - I 14.3 - 10 48.7 + o 30.7 - 7 38.1

- 1 I 0.1

1 0

I 2

2

' 5 2 0

2 0

' 5 I 0

I 0

I 0

I 0

I 0

10 30 10

9 0 49 9 45 18 9 ' 5 '

+ I 21.66 + o 30.96 -5 0.32 -5 5 2 . 2 1

+ 8 5 4 4 + I 2 25.7 + 7 4.3 + I O 41.8

C o m e t I

- I 24.9 + 9 30.6 - 6 12.4 - I 59.0 - 2 6.2

+ I 0 29.2 + 7 '5.7 - 3 34.2 - 1 0 59.6 - 6 50.1 - 9 37.6 - 1 0 19.6 + 4 21.9

+ 6 9.9

I 0

'5 I 0

I 0

1 2 111. (Continued from A. N. 3838). - 2 34.65 - 4 28.95 +4 2543 - 1 21.13 - 7 20.85 - I 10.62 + Z 51.39 -2 '1.51 +4 29.58 -0 45.73 -0 51.13 -1-2 28.13 -5 54.18 -5 2 0 . 1 8

' 5 2 5 5 2

'5 2 5 5 2

' 5 2 5 ' 4 ' 5 2 5 I4 ' 5 ' 5 29 I 4 4 1 56 1 5 11 23 15 I 1 23 I 5 1 1 3 ' 5 2 1 2

I 5 3 4 I4 31 2

14 2 2 1 0 '3 a 2 0

8 8 7 7 8 6 I 0

10

10

'9

'5

a

2 0

I 2

' 4 39 26.98 14 39 26.78 1 4 32 2.98 I 4 32 2.97 14 2 8 10.07

I 4 24 10.74 14 1 0 48.74 '4 '0 48.53 '3 5 5 2645 '3 37 20.16

I3 23 46.29 1 2 59 56.95

'3 30 44.42

I I 2 2 36.63

295 3907

- 1'24!'8 - 7 19.7

+lo 25.6 - 2 33.0

+ 5 34.0

'903 ~-

1 5 '5

10

L O

I 2

Jan. 28 29 30 3'

Febr. I

'5 16

I

2

3 4

5 6 7 8

9 10

1' 12

IWinds. M.T

9h 16"' I'

8 58 2 7

8 49 26 8 57 33 9 2 2 5 9 3 46 8 30 41

6h34m 7?18

6 30 57.33

6 2 7 46.74

1 2 43 58.37

'4 4' 58.37 '4 43 52.48

6 24 32.16

1 2 48 34.29

'4 2 7 34.15 14 33 21.32 '4 35 27 .50 I4 25 17.85

Act

1 4 13 2.39 -36 6 27 .1

13 50 56.47 -37 50 37.2 13 38 5.85 -39 41 21.2 13 31 35.41 -40 24 7.6 13 2 1 17.29 -40 59 34.9 13 5 50.58 -42 5 1 5.9 I I 2 7 54.53 -46 31 2 7 . 0

9 2 5 39.11 -42 4 5 53.8 9 18 7.32 -41 46 45.5 9 4 36.75 -41 I 54.9 8 50 13.05 -40 4 44.9 8 46 12.93 -38 46 52.6 7 1 2 31.41 -23 8 34.7

+zm 8584 - 1 53.20 +o 28.28 +4 , 6.82 - 2 3.62 +o 22.63 -4 51.48

Cord.GC. 19355 Cd.GC.r8935,Stoneg642 Cd.GC.18647~Stone7524 Cd.GC.18514~Stone7456 Cd.GC.i8zgoIStone7364 C d . G C . r 7 9 ~ g , S t o n e 7 ~ 3 5 Cord. GC. 15773 Cd.GC.12948,Stonegogy Cd.GC.1~753~Stone5ooz Cord.GC. 12441 Cd.GC.ia11r,Stone4730 Cd.GC.rzooz,Stone4682 Cord.GC.9247,Rad3r8z6

7 14 4.24

a aPP.

9h27m5~456~ 9 16 16.75 9 5 7.64 8 54 22.43 8 44 11.83 7 1 2 55.92 7 9 14.64

- 2 2 9 47 .5 IRad, 1834

M e a n p l a c e s of t h e c o m p a r i s o n s t a r s for t h e b e g i n n i n g of t h e y e a r of o b s e r v a t i o n .

2 3 2 5 26 26 2 7

30

-4.57 -4.15 -4.70 -4.41 -4.69 -4.47

d l Authority Authority

Dec. 10

13 1 8 '9 2 0

- 320 15' 24!'4

- 8!'0 -4.61 -4.63 -4.5 -4.48 - 5.2 -4.45 I -4.5

-32 38 19.0

April I 3 14 '5 1 6

-32 47 55.' -32 3 ' 5.9

- 8 41 24.3 - 8 32 9.6 -3' 50 1 1 . 5

-32 I 4.5

- 54583 +45!'5 -5.74 +46.2 -5.70 +49.3 -5.69 t 4 8 . 5

-32 53 2.8 -32 57 16.2 -33 31 45.5 -34 I4 41.9

Wash, 1396, Cord. GC. 8160, Stone 3115

Washa 1385, Cord. GC. 8068, Stone 3 0 7 7

Cord.GC.7ggj,Stone3046 Wash, I 348, Cd. GC. 7904,

y, 54461 Rad, 3331 Cd.GC. r7534,Rad33350 Cord. GC. 20042 Y, 6202, Cord.GC.20083,

Stone 8068 Cd.GC. 19702, Stone 7922 Cd.GC. 19837~ Stone 7968 Cord. GC. 1988 I Cd.GC. 19644, Stone 7908

Stone 30 14, Cape,, 749

' 3 ' 4 '5 16 ' 7 I 8 ' 9 2 0

2 1

2 2

23 24 2 5 26 2 7

C o m p a r i s o n s o f t h e o b s e r v a t i o n s with t h e e p h e m e r i d e s (0 -C).

Ad

- 3!'9 -4 .0 - 4.0 -3.8 - 2.3

- 1.3 - 2 . 2

Observatory, Peninsula, Windsor, N. S. Wales, ~ 9 0 3 June 8. Yohn Tebbutt.

Planet and Cornet observations at Windsor, N. S. Wales. By yohn Tebbutt.

All the observations were made with the 8inch equa- torial, the observations of the planet with a filar-micrometer and those of the comet with a square bar-micrometer. The work on the comet was much interfered with by moonlight and cloudy weather. The positions for the first four days are pretty good, but subsequently the comet was very faint and difficult to observe. Two positions of the comet for May 2 were forwarded by post to the Melbourne Obser- vatory, one dependent on Rad, 1090 and the other on Lal.

8773. But as I had no modern authority for the latter star it was particularly requested that the position resting on the Radcliffe star might be cabled to Kiel. Unfortunately, how- ever, although the RA. dependent on this star was cabled, the N. P. D. dependent on the Lalande star was coupled with it (see Astr. Nachr. NO. 3867). Mr. Merfield has kindly sup- plied me with the comparisons of the planet observations with the Berliner Jahrbuch.