2 Results

The aim of the short communication is threefold:

1.

We present here new measures made between September 1997 and April 2000. Table 1 (available at CDS) gives results of measures of 41 visual double stars;

2.

We report the discovery of a new double star, named JCT 4;

3.

We give more precise coordinates for the star DOO 35 together with the position of its companion. DOO 35 is recorded under the following names:
- ADS 4494 (Aitken Double Star catalogue);

- 05477 N5257 (INDEX 1900);

- 28034 (Hipparcos Input Catalogue; ESA 1992);

- BD+52 ${{}^\circ}$ 1011 (Bonner Durchmusterung catalogue);

- 05557+5259 (CCDM).

The star has been seen as single by the author and by Hipparcos. In the Hipparcos Input Catalogue, its 2000 coordinates are $\alpha = 05^{\rm h}55^{\rm m}41.12^{\rm s}$ and $\delta =+52^\circ 58' 42.9''$. However, its actual location lies 22 s to the East and 8.3' to the South. The 2000 coordinates deduced from the observations thus are: $\alpha = 05^{\rm h}56^{\rm m}04^{\rm s}$, $\delta = +52^\circ 50'26''$. Therefore, this star coincides with $\rm BD +52^\circ$ 1012 and its CCDM number must be corrected to $\rm CCDM\; 05561+5250$.

Acknowledgements

I thank J. Dommanget for his help and the Direction of the Observatoire de la Côte d'Azur for kindly allowing me to use the instrument and scientific library.