7 Camelopardalis
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7 Camelopardalis |
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 04h 57m 17.1966s |
| Declination | +53° 45′ 07.564″ |
| Apparent magnitude (V) | 4.452 |
| Characteristics | |
| Spectral type | A1Va/A1IV |
| U−B color index | −0.01 |
| B−V color index | −0.02 |
| R−I color index | −0.01 |
| Astrometry | |
| Radial velocity (Rv) | −7.9 km/s |
| Proper motion (μ) | RA: −24.17 mas/yr Dec.: 7.53 mas/yr |
| Parallax (π) | 8.68 ± 0.81 mas |
| Distance | 380 ± 40 ly (120 ± 10 pc) |
| Absolute magnitude (MV) | -0.88 |
| Details | |
| Mass | 3.9 M☉ |
| Radius | 5.37 R☉ |
| Luminosity | 195 L☉ |
| Temperature | 9,400K K |
| Rotation | 45 km/s 0,00727379 Year |
| Orbit | |
| Companion | CCDM 04573+5345 B D 5 |
| Period (P) | 284 yr |
| Semi-major axis (a) | 0.78" |
| Eccentricity (e) | 0.74 |
| Inclination (i) | 137.9° |
| Longitude of the node (Ω) | 158.2° |
| Periastron epoch (T) | 1986 |
| Orbit | |
| Companion | CCDM 04573+5345 C STF 610 |
| Semi-major axis (a) | 25.8" |
| Inclination (i) | 240° |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
| Database references | |
| SIMBAD | data |
7 Camelopardalis is a triple star system in the constellation Camelopardalis. It is approximately 376 light years from Earth.
The primary component, 7 Camelopardalis A, is a white A-type main sequence dwarf with an apparent magnitude of +4.43. Orbiting the primary with a period of 284 years is 7 Camelopardalis B, a magnitude +7.8 star which is only 0.78 arcseconds from the primary. The third component, 7 Camelopardalis C, is an eleventh magnitude star 26 arcseconds distant.
Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
|---|---|---|---|---|---|
| ADS 3536 B (BD+53 829C) | 04h 57m 14.6s | +53° 44' 53 | 11.3 | Simbad |
References
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