HD 41742 and HD 41700
Multiple star system in the constellation Puppis / From Wikipedia, the free encyclopedia
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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.
Quick Facts Observation data Epoch J2000.0 Equinox J2000.0, Apparent magnitude (V) ...
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] |
Distance | 91.2 ± 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] |
Distance | 88.1 ± 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] |
Distance | 88.50 ± 0.04 ly (27.13 ± 0.01 pc) |
Absolute magnitude (MV) | 4.221±0.025[8] |
Details | |
HD 41742 A | |
Mass | 1.20+0.07 −0.06[7] M☉ / ~≥0.21 ± 0.06 M☉ |
Radius | 1.4[1] R☉ |
Luminosity | 2.7[1] L☉ |
Surface gravity (log g) | 4.30 ± ~0.10[7] cgs |
Temperature | 6,363±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 |
Age | 3.3[1] Gyr |
HD 41742 B | |
Mass | 0.80[10] M☉ |
Radius | 0.93[3] R☉ |
Luminosity | 0.25[3] L☉ |
Surface gravity (log g) | 4.38[3] cgs |
Temperature | 4,294[3] K |
Metallicity [Fe/H] | −0.22[3] dex |
HD 41700 (C) | |
Mass | 1.13+0.04 −0.07[7] M☉ |
Radius | 1.2[4] R☉ |
Luminosity | 1.8[4] L☉ |
Surface gravity (log g) | 4.36[7] cgs |
Temperature | 6,165±80[7] K |
Metallicity [Fe/H] | −0.19±0.10[7] dex |
Rotational velocity (v sin i) | 16.6±1.0[11] km/s |
Age | 3.7[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 | |
SIMBAD | data |
HD 41742 B | |
SIMBAD | data |
HD 41700 (C) | |
SIMBAD | data |
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