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Zeta Piscium, 86 Piscium

Proper NameRevati (Zeta Piscium Aa)
Bayer DesignationZeta Piscium
Flamsteed Number86 Piscium
HR (BSC)361 (A), 362 (B)
HD7344 (A), 7345 (B)
Right Ascension1h 13m 44s (A), 1h 13m 45s (B)
Declination+7° 34' 31" (A), +7° 34' 42" (B)
Distance133 light years / 41 parsecs (A)
132 light years / 41 parsecs (B)
MagnitudeApparent: +5.19 (A), +6.10 (B)
Absolute: +2.13 (A), +3.06 (B)
Spectral ClassA7IV white subgiant (A), F7V bright yellow dwarf (B)
Optimum VisibilityOctober

Although it appears as a single star to the naked eye, Zeta Piscium is in fact a complex multiple system. Zeta Piscium A is a binary pair of white stars, with the more massive of the two given the proper name Revati. Meanwhile Zeta Piscium B is a triple system, with a lower-mass outer star (Zeta Piscium C) orbiting an inner binary.

The two primary stars in the Zeta Piscium system are sufficiently widely separated that they can be seen as two separate but overlaid objects in this image. Zeta Piscium A is the brighter of the two, to the west and south (or lower right), and it is the more massive of the two stars in this binary pair (Zeta Piscium Aa) that formally holds the name Revati. The slightly fainter Zeta Piscium B, to the east and north (or upper left), is also a binary system, with a third component known as Zeta Piscium C. Imagery provided by Aladin sky atlas


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