HD 183552
Star in the constellation of Telescopium
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HD 183552, also known as HR 7411, is a probable spectroscopic binary[14] located in the southern constellation Telescopium. The system has a combined apparent magnitude of 5.74,[2] allowing it to be faintly visible to the naked eye. Based on parallax measurements from the Gaia spacecraft, it is estimated to be 337 light years distant.[1] The value is horribly constrained, but it appears to receding with a radial velocity of 14 km/s.[5]
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Telescopium |
| Right ascension | 19h 32m 53.82390s[1] |
| Declination | −53° 11′ 08.2148″[1] |
| Apparent magnitude (V) | 5.74±0.01[2] |
| Characteristics | |
| Evolutionary stage | main sequence[1] |
| Spectral type | kA6 hF2 mF2 (II)[3] |
| U−B color index | +0.19[4] |
| B−V color index | +0.30[4] |
| Astrometry | |
| Radial velocity (Rv) | 14.00±13.8[5] km/s |
| Proper motion (μ) | RA: +36.270 mas/yr[1] Dec.: −7.392 mas/yr[1] |
| Parallax (π) | 9.6769±0.1128 mas[1] |
| Distance | 337 ± 4 ly (103 ± 1 pc) |
| Absolute magnitude (MV) | +0.45[6] |
| Details | |
| Mass | 1.68±0.29[7] M☉ |
| Radius | 4.7[8] R☉ |
| Luminosity | 45[9] L☉ |
| Surface gravity (log g) | 3.26[10] cgs |
| Temperature | 7,317±282[11] K |
| Age | 733±8[1] Myr |
| Other designations | |
| 62 G. Telescopium[12], CPD−53°9585, GC 26959, HD 183552, HIP 96141, HR 7411, SAO 246151[13] | |
| Database references | |
| SIMBAD | data |
This object is an Am star with a spectral classification of kA6hF2mF2 (II),[3] an evolved F-type star having the calcium K-line of an A6 star plus the hydrogen and metallic lines of an F2 star. Its current mass is 1.68 M☉[7] and is estimated to be 733 million years old,[1] having completed 83.1% of its main sequence lifetime. It has expanded to 4.7 times the radius of the Sun[8] and now radiates 45 times the luminosity of the Sun[9] from its photosphere at an effective temperature of 7,317 K.[11]