Nu Pegasi
Star in the constellation Pegasus
title: "Nu Pegasi" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["k-type-giants", "suspected-variables", "pegasus-(constellation)", "bayer-objects", "durchmusterung-objects", "flamsteed-objects", "henry-draper-catalogue-objects", "hipparcos-objects", "bright-star-catalogue-objects"] description: "Star in the constellation Pegasus" topic_path: "general/k-type-giants" source: "https://en.wikipedia.org/wiki/Nu_Pegasi" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Star in the constellation Pegasus ::
| image = |image=Pegasus constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=Nu Pegasi |x=666|y=717 | caption = Location of ν Pegasi (circled) | epoch = J2000 | constell = Pegasus | ra = | dec = | appmag_v = 4.84 | type = red giant branch | class = K4III | b-v = +1.44 | u-b = +1.80 | variable = suspected | radial_v = −18.90 | prop_mo_ra = +101.759 | prop_mo_dec = +100.923 | parallax = 12.4810 | p_error = 0.3322 | parallax_footnote = | absmag_v = 0.26 | source = | mass = 1.13 | radius = 24.57 | temperature = 4,073 | luminosity = 149 | rotational_velocity = 2.3 | gravity = 1.72 | metal_fe = +0.02 | age_gyr = | names = | Simbad = nu.+Peg
ν Pegasi, Latinized as Nu Pegasi is a single star in the northern constellation of Pegasus. It is an orange-hued star that is faintly visible to the naked eye with an apparent visual magnitude of 4.84. The star is located approximately away based on parallax, but is drifting closer with a radial velocity of .
This is an aging giant star, most likely (94% chance) on the red giant branch, with a stellar classification of K4III. It is a suspected variable, with a magnitude range observed from 4.83 to 4.86. With the supply of hydrogen at its core exhausted, the star has cooled and expanded to 24.6 times the Sun's radius. It is 13% more massive than the Sun and is radiating 149 times the Sun's luminosity from its swollen photosphere at an effective temperature of .
References
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References
- "nu. Peg".
- {{cite DR2. 2696225097987563136
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