11 Leonis Minoris

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11 Leonis Minoris

A near-infrared (y band) light curve for SV Leonis Minoris, adapted from Skiff and Lockwood (1986)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Leo Minor
Right ascension 09h 35m 39.50219s[2]
Declination +35° 48′ 36.4770″[2]
Apparent magnitude (V) 5.54 + 14.0[3]
Characteristics
Spectral type G8V[4] + M4[5]
U−B color index 0.44/—
B−V color index 0.77/—
Variable type RS CVn
Distance
36.64 ± 0.04 ly
(11.23 ± 0.01 pc)
Absolute magnitude (MV)5.25±0.008[7]
Inclination
(i)		117°
Details
Gyr
11 LMi B
Mass0.23[11] M☉
HR 3815, SAO 61586, WDS 09357+3549[12]
Database references
SIMBAD11 LMi A
11 LMi B
ARICNS11 LMi A
11 LMi B

11 Leonis Minoris is a

arc seconds per annum.[13]

The primary component is a G-type main-sequence star with a stellar classification of G8V,[4] which is slightly less massive and slightly dimmer than the Sun.[8] This is an RS Canum Venaticorum variable star with its luminosity varying by 0.033 magnitudes over a period of 18 days.[1] Compared to the Sun, it has more than double the abundance of elements more massive than helium—what astronomers term the star's metallicity.[9]

There is a secondary component, a 14th[3] magnitude red dwarf star much dimmer than the primary. The pair have an orbital period of 201 years with a high eccentricity of 0.88.[4]

References

  1. ^
    doi:10.1086/131763
  2. ^
    S2CID 244398875
    . Gaia DR3 record for this source at VizieR.
  3. ^
    S2CID 14878976
    .
  4. ^
    doi:10.1051/0004-6361/201219774
    , A69
  5. S2CID 28314795
  6. ^
    S2CID 16602121
  7. S2CID 119187733
    .
  8. ^
    ISSN 0004-6361 11 Leonis Minoris' database entry at VizieR
    .
  9. ^
    S2CID 119209183
  10. S2CID 14911430
    .
  11. S2CID 56066740
    , 87.
  12. ^ a b "* 11 LMi", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 2015-06-02.
  13. S2CID 2603568
    .
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