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Location of HD 3346 in the Andromeda constellation. |
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 36m 46.441s |
| Declination | +44° 29′ 18.913″ |
| Apparent magnitude (V) | 5.164 |
| Characteristics | |
| Spectral type | K5III |
| U-B color index | 1.97 |
| B-V color index | 1.6 |
| Variable type | suspected |
| Astrometry | |
| Radial velocity (Rv) | -32.8 km/s |
| Proper motion (μ) | RA: -36.70 mas/yr Dec.: 31.77 mas/yr |
| Parallax (π) | 4.97 ± 0.78 mas |
| Distance | 655.58 ly (~200 pc) |
| Absolute magnitude (MV) | 6.789 |
| Details | |
| Radius | 46.27 R☉ |
| Temperature | 4350 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 3346, also known as V428 Andromedae, is an orange giant star approximately 655 light-years away in the constellation of Andromeda.
Possible planetary system
In 1996 it was announced that the variations in radial velocity of this star were larger than expected. A planetary system was proposed to explain this variation.12
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
|---|---|---|---|---|
| b (unconfirmed) | 10 MJ | 0.3 | 30.0 | 0 |
| c (unconfirmed) | 60 MJ | 2.5 | 650 | 0.00 |
References
- ^ Noyes, R. et al (1996). "HD 3346". International Astronomical Union Circular (6316): 1.
- ^ Bell, George H. (2001-04-05). "The Search for the Extrasolar Planets: A Brief History of the Search, the Findings and the Future Implications". Arizona State University. Retrieved on 2008-07-16.
The paper, HD 3346, 1996.
External links
- "HD 3346". Extrasolar Visions. Retrieved on 2008-06-10.
- "HD 3346 Planetary System". Interstellar Card. Retrieved on 2008-06-10.
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