| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 01h 44m 17.964s[2] |
| Declination | +57° 32′ 11.81″[2] |
| Apparent magnitude (V) | 6.18[3] |
| Characteristics | |
| Spectral type | G1-2V[4]/G1-2V[4]/A3[5]/G5[6] |
| U−B color index | 0.05[3] |
| B−V color index | 0.13[3] |
| Variable type | Algol[7] |
| Astrometry | |
| Radial velocity (Rv) | 7.11±0.30[4] km/s |
| Proper motion (μ) | RA: 46.52±0.52[2] mas/yr Dec.: 19.17±0.50[2] mas/yr |
| Parallax (π) | 17.6 ± 1.5 mas[4] |
| Distance | 190 ± 20 ly (57 ± 5 pc) |
| Orbit[4] | |
| Primary | ADS 1359 A |
| Companion | ADS 1359 B |
| Period (P) | 184.9±2.7 yr |
| Semi-major axis (a) | 0.911±0.065″ |
| Eccentricity (e) | 0.794±0.050 |
| Inclination (i) | 133.3±2.6° |
| Longitude of the node (Ω) | 125.4±4.3° |
| Periastron epoch (T) | 2021.8±2.1 |
| Argument of periastron (ω) (secondary) | 269.5±8.5° |
| Orbit[4] | |
| Primary | ADS 1359 Ba |
| Companion | ADS 1359 Bb |
| Period (P) | 2.587332±0.000002 d |
| Semi-major axis (a) | 9.96±0.06 R⊙ |
| Inclination (i) | 84.7±2.2° |
| Semi-amplitude (K1) (primary) | 97.1±0.9 km/s |
| Semi-amplitude (K2) (secondary) | 97.0±1.6 km/s |
| Details[4] | |
| ADS 1359 A | |
| Temperature | 8522±38 K |
| Rotational velocity (v sin i) | 84.55±1.42 km/s |
| ADS 1359 Ba | |
| Mass | 0.99±0.03 M☉ |
| Radius | 1.05±0.05 R☉ |
| Temperature | 5933±131 K |
| Rotational velocity (v sin i) | 32.17±2.32 km/s |
| ADS 1359 Bb | |
| Mass | 0.99±0.04 M☉ |
| Radius | 1.05±0.05 R☉ |
| Temperature | 5693±161 K |
| Rotational velocity (v sin i) | 49.10±7.46 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
ADS 1359 is a quadruple star system in the constellation Cassiopeia. It is composed of two sun like stars in an eclipsing binary with a 2.5-day period, which is in turn orbited by an A-type main-sequence star with a 185-year orbital period. There is also HD 236848 which is a distant proper motion companion.
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