HD 171384
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Lyra |
| Right ascension | 18h 32m 51.4937s / 18h 32m 44.5023 |
| Declination | +38° 49' 11.27" / +38° 52' 4.714" |
| Apparent magnitude (V) | 6.95 / 8.03 |
| Characteristics | |
| Spectral type | F8 / G5 |
| U-B color index | +0.15 / unknown |
| B-V color index | +0.63 / unknown |
| Astrometry | |
| Proper motion (μ) | RA: 4.70 / 95.90 mas/yr Dec.: -85.80 / 67.60 mas/yr |
| Other designations | |
HD 171384, HD 171362, and IDS 18295+3846 C form a trinary star system in the constellation Lyra. It can be found within one degree of the star Vega.[3]
The brightest star, 7th magnitude HD 171384, possesses a spectral type of F8, meaning it is yellowish white and its surface temperature ranges from 6,000 to 7,500 kelvin.[1] Its companion is a yellow 8th magnitude star with a spectral type of G5, and therefore it has a surface temperature of 5,000 to 6,000 kelvin.[2]
IDS 18295+3846 C is listed in the Index catalogue of visual double stars (IDS) and the 2 Micron All-Sky Survey (2MASS) as a third component in the system, of an unspecified magnitude.[4]
[edit] References
- ^ a b Simbad Query Result. Simbad. Retrieved on October 13, 2007.
- ^ a b Simbad Query Result. Simbad. Retrieved on October 13, 2007.
- ^ Autostar Suite Astronomer Edition. CD-ROM. Meade, April 2006.
- ^ Simbad Query Result. Simbad. Retrieved on October 13, 2007.
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