HD 42540

Last updated
HD 42540
Pictor constellation map.svg
Red circle.svg
Location of HD 42540 (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Pictor
Right ascension 06h 07m 03.40671s [1]
Declination −62° 09 16.4496 [1]
Apparent magnitude  (V)5.04 [2]
Characteristics
Spectral type K2-3III [3]
U−B color index +1.35 [4]
B−V color index +1.25 [4]
Variable type suspected [5]
Astrometry
Radial velocity (Rv)+21.60 [6]  km/s
Proper motion (μ)RA: +15.513 [1]   mas/yr
Dec.: −70.013 [1]   mas/yr
Parallax (π)8.378 ± 0.0939  mas [1]
Distance 389 ± 4  ly
(119 ± 1  pc)
Absolute magnitude  (MV)−0.18 [2]
Details
Mass 2.8 [7]   M
Radius 27 [7]   R
Luminosity 270 [1]   L
Temperature 4,530 [8]   K
Rotational velocity (v sin i)1.7 [9]  km/s
Other designations
μ Dor, CD−62°235, FK5  2469, GC  7825, HIP  28991, HR  2196, HD  42540, NSV  2845, SAO  249451
Database references
SIMBAD data

HD 42540, also known as HR 2196, is a giant star in the constellation Pictor. A class K2-3III orange giant, its apparent magnitude is 5.04 and it is approximately 389 light years away based on parallax.

This star was mistakenly catalogued as Mu Doradus (Mu Dor/μ Doradus/μ Dor) at incorrect coordinates, then assumed to be variable as no 5th-magnitude star was seen at that position. It also has the Gould designation 47 G. Pictoris. [10]

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<span class="mw-page-title-main">41 Leonis Minoris</span> Star in the constellation Leo Minor

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References

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