After the publication of the special 79th Name-List of Variable Stars (Kazarovets et al., 2008), we commenced preparation of the regular 80th Name-List. It turns out that the current flow of new discoveries is unprecedentedly high, so that it becomes reasonable to subdivide the Name-List into several parts by right ascension. The present Part I of the 80th Name-List of Variable Stars contains data necessary for identifications of new variables finally designated in 2010. Most stars in the Name-List are confined to right ascensions (J2000.0) between 0^h and 6^h. Exceptions are several Novae and unusual variables named upon requests of the IAU Central Bureau of Astronomical Telegrams, which are included no matter the right ascension. With the 2036 stars of the current Name-List, the total number of named variable stars, not counting designated non-existing stars or stars subsequently identified with earlier-named variables, is now 43 519.

As it had been done in the 79th Name-List, we separate the catalogue of newly designated variables (to be published elsewhere in the nearest future) from the Name-List proper. Table 1 of the current Name-List contains the new GCVS name, equatorial coordinates (rounded to an accuracy sufficient for identification), and variability type for each star. The order of stars in Table 1 corresponds to the order of stars in the GCVS. The remarks concerning the two unusual variables (type *), BF Ari and GO Cet, follow Table 1. The electronic version of the Name-List at http://www.sai.msu.su/gcvs/gcvs/nl80 additionally presents variability ranges, light elements, spectral types, identifications with astronomical catalogues, detailed remarks, bibliographic references for the newly named variable stars.

As usual, we continued naming Novae and other variables of astrophysical importance upon requests from the IAU Bureau of Astronomical Telegrams. These stars are also included in Table 1. They are also listed in Table 2 that contains, besides GCVS names, preliminary ``constellation+year'' designations for Novae.

We use this opportunity to announce two corrections.

In the 75th Name-List of Variable Stars (Kazarovets et al., 2000), because of a blunder in right ascension, the star Tmz V124 was erroneously named FS Boo. Now we announce FS Boo a non-existing variable and give Tmz V124 the new GCVS name V581 Aur. The correct J2000.0 coordinates of V581 Aur are 05^h12^m06^s.9, +45°46'43".

The 78th Name-List of Variable Stars (Kazarovets et al., 2006) changed the name of the eclipsing variable V577 Cen into V423 Hya because of the star's improved coordinates corresponding to a different constellation. Our identification was based on the chart by Tsesevich & Kazanasmas (1971). Christiansen et al. (2008) recovered the variable beyond doubt, their identification shows that the chart in Tsesevich & Kazanasmas is wrong, and the star is actually in Centaurus. Thus, we return the name V577 Cen to the variable and announce V423 Hya to be an alias name of V577 Cen. The accurate J2000.0 position of V577 Cen is 11^h56^m40^s.5, -35°43'45".

This study was supported in part by Russian Foundation for Basic Research and by the Programme ``Origin and Evolution of Stars and Galaxies'' of the Presidium of Russian Academy of Sciences.

References:

Christiansen, J.L., Derekas, A., Kiss, L.L. et al. 2008, MNRAS, 385, 1749 (2008MNRAS.385.1749C)

Kazarovets, E.V., Samus, N.N., Durlevich, O.V. 2000, IBVS, No. 4870 (IBVS N°.4870)

Kazarovets, E.V., Samus, N.N., Durlevich, O.V. et al. 2006, IBVS, No. 5721 (IBVS N°.5721)

Kazarovets, E.V., Samus, N.N., Durlevich, O.V. et al. 2008, IBVS, No. 5863 (IBVS N°.5863)

Tsesevich, V.P., Kazanasmas, M.S. 1971, Atlas of Finding Charts of Variable Stars, Moscow: Nauka