MX Puppis

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MX Puppis
Puppis constellation map.svg
Red circle.svg
Location of MX Puppis (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Puppis
Right ascension 08h 13m 29.51720s [1]
Declination −35° 53 58.2662 [1]
Apparent magnitude  (V)4.60 - 4.92 [2]
Characteristics
Spectral type B1.5 IVe [3]
U−B color index −0.98 [4]
B−V color index −0.11 [4]
Variable type γ Cas [2]
Astrometry
Radial velocity (Rv)+35.00 [5]  km/s
Proper motion (μ)RA: −7.30 [1]   mas/yr
Dec.: +9.75 [1]   mas/yr
Parallax (π)3.51 ± 0.16  mas [1]
Distance 930 ± 40  ly
(280 ± 10  pc)
Absolute magnitude  (MV)−2.97 [6]
Details
Mass 10.1 [7]   M
Radius 6.5 [8]   R
Luminosity 28,840 [9]   L
Surface gravity (log g)4.41 [10]   cgs
Temperature 32,870 [10]   K
Rotational velocity (v sin i)145 [10]  km/s
Age 22.5 [7]   Myr
Other designations
r Puppis, CD−35°4349, GC  11197, GSC  07133-04588, HIP  40274, HR  3237, HD  68980, SAO  198957
Database references
SIMBAD data

MX Puppis (MX Pup) is a class B1.5IV [3] (blue subgiant) star in the constellation Puppis. Its apparent magnitude varies irregularly between magnitude 4.6 and 4.9 and it is classified as a Gamma Cassiopeiae variable. [2] It is approximately 930 light years away based on parallax. [1]

A light curve for MX Puppis, adapted from Hubert and Floquet (1998) MXPupLightCurve.png
A light curve for MX Puppis, adapted from Hubert and Floquet (1998)

MX Puppis is a γ Cas variable, ranging from 4.92 to 4.60 magnitude. [2]

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<span class="mw-page-title-main">MZ Puppis</span> Red supergiant star in the constellation of Puppis

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References

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