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- HD 98617, also known HR 4385, is a double star located in the southern circumpolar constellation Chamaeleon. The system has a combined apparent magnitude of 6.35, placing it near the limit for naked eye. The system is located relatively close at a distance of 206 light years but is approaching the Solar System with a fairly constrained radial velocity of −4 km/s. At its current distance, HD 98617 brightness is diminished by 0.29 magnitudes due to interstellar dust. The system's nature as a double star was first observed in a 1991 Hipparcos multiplicity survey. Unfortunately, their current separation is six-tenths of an arcsecond, making it difficult to measure the properties of the individual components. Nevertheless, the 10th magnitude companion is located along a position angle of 237° as of 2018. The primary has a stellar classification of A8 IIIm:, indicating that it is an evolved Am star (with uncertainty). However, Renson and Manfroid (2009) lists its chemical peculiarity to be doubtful. It has 1.75 times the mass of the Sun and 1.85 times its girth. It radiates 8.41 times the luminosity of the Sun from its photosphere at an effective temperature of 7,540 K, giving it a white hue. It is estimated to be a billion years old and has a solar metallicity. Ironically, the aforementioned parameters belong to an A-type main-sequence star instead of a giant star and Gaia DR3 even models it as such. (en)
- HD98617 — хімічно пекулярна зоря спектрального класу A3, що має видиму зоряну величину в смузі V приблизно 6,3.Вона розташована на відстані близько 210,4 світлових років від Сонця. (uk)
- HD 98617，又名CP-78 638，SAO 256823、HR 4385，是一颗恒星，视星等为6.35，位于銀經298.68，銀緯-17.57，其B1900.0坐标为赤經11h 15m 38.5s，赤緯-79° -17.57′ 15″。 (zh)
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- HD98617 — хімічно пекулярна зоря спектрального класу A3, що має видиму зоряну величину в смузі V приблизно 6,3.Вона розташована на відстані близько 210,4 світлових років від Сонця. (uk)
- HD 98617，又名CP-78 638，SAO 256823、HR 4385，是一颗恒星，视星等为6.35，位于銀經298.68，銀緯-17.57，其B1900.0坐标为赤經11h 15m 38.5s，赤緯-79° -17.57′ 15″。 (zh)
- HD 98617, also known HR 4385, is a double star located in the southern circumpolar constellation Chamaeleon. The system has a combined apparent magnitude of 6.35, placing it near the limit for naked eye. The system is located relatively close at a distance of 206 light years but is approaching the Solar System with a fairly constrained radial velocity of −4 km/s. At its current distance, HD 98617 brightness is diminished by 0.29 magnitudes due to interstellar dust. (en)
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- HD 98617 (en)
- HD 98617 (zh)
- HD98617 (uk)
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