HD 41742 and HD 41700

HD 41742 AabB and HD 41700 (C)
Location of HD 41742 (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Puppis
HD 41742 A
Right ascension 06h 04m 40.101s[1]
Declination −45° 04′ 44.10″[1]
Apparent magnitude (V) 5.975±0.009[2]
HD 41742 B
Right ascension 06h 04m 39.782s[3]
Declination −45° 04′ 48.78″[3]
Apparent magnitude (V) 8.867±0.028[2]
HD 41700 (C)
Right ascension 06h 04m 28.439s[4]
Declination −45° 02′ 11.77″[4]
Apparent magnitude (V) 6.343±0.010[2]
Characteristics
HD 41742 A
Spectral type F6V[5]/K-MV(MS)
B−V color index 0.493±0.009[6]
HD 41742 B
Spectral type K3V[5]
B−V color index 1.014±0.076[2]
HD 41700 (C)
Spectral type F7.5V[5]
B−V color index 0.517±0.005[6]
Astrometry
HD 41742 A
Radial velocity (Rv)27.0±2.5[7][note 1] km/s
Proper motion (μ) RA: −80.831[1] mas/yr
Dec.: +251.617[1] mas/yr
Parallax (π)35.779 ± 0.2768 mas[1]
Distance91.2 ± 0.7 ly
(27.9 ± 0.2 pc)
Absolute magnitude (MV)3.853±0.024[8]
HD 41742 B
Proper motion (μ) RA: −84.025[3] mas/yr
Dec.: 237.521[3] mas/yr
Parallax (π)37.0030 ± 0.0525 mas[3]
Distance88.1 ± 0.1 ly
(27.02 ± 0.04 pc)
Absolute magnitude (MV)6.745±0.043[8]
HD 41700 (C)
Radial velocity (Rv)27.4±0.4[7] km/s
Proper motion (μ) RA: −82.262[4] mas/yr
Dec.: 246.246[4] mas/yr
Parallax (π)36.8531 ± 0.0162 mas[4]
Distance88.50 ± 0.04 ly
(27.13 ± 0.01 pc)
Absolute magnitude (MV)4.221±0.025[8]
Details
HD 41742 A
Mass1.20+0.07
−0.06[7] M☉ / ~≥0.21 ± 0.06 M☉
Radius1.4[1] R☉
Luminosity2.7[1] L☉
Surface gravity (log g)4.30 ± ~0.10[7] cgs
Temperature6,363±85[7] K
Metallicity [Fe/H]−0.17±0.10[7] dex
Rotation≤2.0 days (maximum rotational period, derived from v sin i if i = 90°)[9]
Rotational velocity (v sin i)26.7±1.3[9] km/s
Age3.3[1] Gyr
HD 41742 B
Mass0.80[10] M☉
Radius0.93[3] R☉
Luminosity0.25[3] L☉
Surface gravity (log g)4.38[3] cgs
Temperature4,294[3] K
Metallicity [Fe/H]−0.22[3] dex
HD 41700 (C)
Mass1.13+0.04
−0.07[7] M☉
Radius1.2[4] R☉
Luminosity1.8[4] L☉
Surface gravity (log g)4.36[7] cgs
Temperature6,165±80[7] K
Metallicity [Fe/H]−0.19±0.10[7] dex
Rotational velocity (v sin i)16.6±1.0[11] km/s
Age3.7[4] Gyr
Other designations
HD 41742 A: HIP 28790, TYC 8101-1755-1, HR 2158
HD 41742 B: TYC 8101-1757-1
HD 41700 (C): HIP 28764, GJ 9200, TYC 8101-309-1, HR 2157
Database references
HD 41742 A
SIMBADdata
HD 41742 B
SIMBADdata
HD 41700 (C)
SIMBADdata

HD 41742 and HD 41700 is a star system that lies approximately 88 light-years away in the constellation of Puppis. The system consists of two bright stars where the primary is orbited by two fainter stars, making it a quadruple with an unequal hierarchy.

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  2. ^ a b c d Cite error: The named reference Hog2000 was invoked but never defined (see the help page).
  3. ^ a b c d e f g h i j Cite error: The named reference dr3b was invoked but never defined (see the help page).
  4. ^ a b c d e f g h Cite error: The named reference dr3c was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Teff was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).
  7. ^ a b c d e f g h i j Cite error: The named reference Casagrande2011 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference AbsMag was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference AmmlerVonEiff2012 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Ehrenreich2010 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Weise2010 was invoked but never defined (see the help page).


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