| 41. | Less than one degree from the Blinking Planetary is the double star 16 Cygni.
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| 42. | The other bright star in Chamaeleon is Delta Chamaeleontis, a wide double star.
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| 43. | In 1873 & ndash; 1874, he produced a catalog of double stars.
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| 44. | In 1778, Johann Tobias Mayer discovered that ? Andromedae was a double star.
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| 45. | He discovered many nebulas, variable stars, and more than 2500 double stars.
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| 46. | ? Sagittarii is a suspected double star although no companion has been confirmed yet.
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| 47. | She is a double Star and belongs to the Somatic class along with Ruka.
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| 48. | 3 Geminorum is also a close double star.
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| 49. | Another interesting double star is omicron Cygni.
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| 50. | Delta Apodis is a double star, the two components of which are 103 planets.
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