Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
|
---|---|
Constellation | Grus |
Right ascension | 21h 48m 15.7514s[1] |
Declination | −47° 18′ 13.014″[1] |
Apparent magnitude (V) | 5.58[1] |
Characteristics | |
Spectral type | G2V[1] |
U−B color index | +0.08[2] |
B−V color index | +0.60[2] |
Astrometry | |
Radial velocity (Rv) | −7.6 ± 0.2[1] km/s |
Proper motion (μ) | RA: 165.64[1] mas/yr Dec.: −295.00[1] mas/yr |
Parallax (π) | 63.95 ± 0.78[1] mas |
Distance | 51 ± 0.6 ly (15.6 ± 0.2 pc) |
Absolute magnitude (MV) | 4.61[3] |
Details | |
Mass | 0.97 (0.92 to 1.04)[4] M☉ |
Radius | 1.0[5] R☉ |
Temperature | 5900[4] K |
Metallicity | [Fe/H] = −0.15[4] |
Rotational velocity (v sin i) | 2[4] km/s |
Age | 3.8 (1.3 to 7.4) × 109[4] years |
Other designations | |
Database references | |
SIMBAD | data |
HR 8323 is a G-type pre-main-sequence star in the constellation of Grus.[1] It has an apparent visual magnitude of approximately 5.58.[1] A debris disk has been imaged around this star in visible light using the ACS instrument on the Hubble Space Telescope; it has also been imaged in the infrared (70 μm) using the MIPS instrument on the Spitzer Space Telescope. Based on the ACS image, the disk appears to have a radius of about 163 astronomical units and to be about 30 AU wide, and to be inclined at 60° to the plane of the sky.[6]
Another star, CCDM J21483-4718B (also designated CD−47 13929 or WDS J21483-4718B), of apparent visual magnitude 8.7, has been observed 55 arcseconds away from this star,[7] but based on comparison of proper motions, it is believed to be an optical double and not physically related to its companion.[8]