Winnecke Catalogue of Double Stars

Winnecke Catalogue of Double Stars is a list of seven "new" double stars published by German Astronomer August Winnecke in Astronomische Nachrichten in 1869.[1] Winnecke later noted that three of the double stars he catalogued had been discovered earlier (30 Eridani, Bradley 757, and 44 Cygni). The stars are sometimes given Winnecke designations (e.g. Winnecke 4), and sometimes abbreviated to WNC.

WNC #  | Other Names  | Constellation | Component Magnitudes  | Spectral Types | Right Ascension | Declination

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1  |  | Pisces | 9.9 / 10.4  | G5 / ?  | 00h 58m 01s | +09° 16.7′
2  | 30 Eridani  | Eridanus | 5.4 / 10.6  | B8V / F4V  | 03h 52m 42s | −05° 21.7′
3  |  | Orion | 6.6 / 8.0 / 8.1  | F7V / F8V / F8V  | 05h 23m 51s | 00° 52.0′
4 | M40 | Ursa Major | 9.6 / 10.1  | G0 / F8  | 12h 22m 16s | 58° 5.0′
5  |  | Virgo | 9.6  | G0  | 13h 45m 33s | −03° 1.0′
6  | 44 Cygni  | Cygnus | 6.2  | F5Iab  | 20h 31m 00s | 36° 56.2′
7  |  | Pegasus | 8.6  | F8  | 23h 32m 33s | 31° 26.8′

## References

1. ↑ Winnecke, A (1869). "Doppelsternmessungen. Von Herrn Dr. A. Winnecke". Astronomische Nachrichten 73 (10): 145. doi:10.1002/asna.18690731002. Bibcode: 1869AN.....73..145W. https://zenodo.org/record/1424675/files/article.pdf.

## External links

* Winnecke Objects from SEDS
* A biography of August Winnecke from SEDS

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