112 Her, BD+21°3582, GC 25895, HD 174933, HIP 92614, HR 7113, SAO 86521, WDS J18523+2126[10]
Database references
SIMBAD
data
112 Herculis is a binary star system in the northern constellation of Hercules. It is dimly visible to the naked eye with a combined apparent visual magnitude of 5.43.[2] The secondary component is about two magnitudes fainter than the primary star.[4] The distance to this system is approximately 415 light years based on parallax measurements.[1] It is drifting closer to the Sun with a radial velocity of −20 km/s.[5]
The binary character of this system was discovered by W. F. Meyer in 1926. By measuring the variation in velocity of the primary component, he determined an orbital period of 6.3624 days.[11] K. Osawa in 1959 found a stellar classification of A4 III for the pair.[12] W. P. Bidelman observed that the primary has unusually strong lines of ionized phosphorus, and it was assigned to the class of peculiar manganese stars by W. L. W. Sargent and L. Searle in 1962, with a resulting spectral type of B9.[13] No evidence was found for a strong magnetic field by P. S. Conti in 1970.[14]
A light curve for 112 Herculis, plotted from TESS data[15]
In 1969, A. Cowley and associates found a stellar class of B9p Hg for this system, indicating a peculiar star with an abundance anomaly of mercury.[3] C. E. Seligman in 1970 determined a mass ratio of 2.06±0.17 for the pair, which supported individual stellar classes of B7V and A3V for main sequence components. The sharpness of the spectral lines suggested that at least the primary is rotating synchronously with its orbital period.[16] A more detailed analysis by Seligman and L. H. Allen later in 1970 refined the classifications to B6.5V and A2V. The elemental abundances for both stars appeared similar, although the secondary abundances were more uncertain.[4]
In 1975, the primary was classified as a mercury-manganese star by C. R. Cowley and G. C. L. Aikman.[17] T. A. Ryabchikova and associates in 1996 refined the mass ratio to 1.98±0.03. The primary showed significant deficiencies of helium and mercury, but a large overabundance of iron. The secondary component displayed abundances similar to an Am star.[8] This is a double-lined spectroscopic binary system with an orbital period of 6.36246 days and an eccentricity (ovalness) of 0.11.[6] As of 2021, measurements by the TESS space telescope show a rotation period of 12.4 days for the primary, suggesting that it is not rotating synchronously with its orbit.[7] Some variability in flux was recorded by TESS, but this is due to orbital motion – the stars themselves do not appear to be variable.[18]
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112Herculis is a binary star system in the northern constellation of Hercules. It is dimly visible to the naked eye with a combined apparent visual magnitude...
trifle west.[citation needed] 110 Herculis, along with its apparent neighbors 111 Herculis, 112Herculis, and 113 Herculis lie close to the eastern edge of...
borderline of the enclosure, consisting of μ Herculis, δ Herculis, λ Herculis, ο Herculis, 112Herculis, ζ Aquilae, θ1 Serpentis, η Serpentis, ν Ophiuchi...
Delta Herculis (δ Herculis, abbreviated Delta Her, δ Her) is a multiple star system in the constellation of Hercules. Its light produces to us apparent...
of the enclosure, consisting of Lambda Herculis, Delta Herculis, Mu Herculis, Omicron Herculis, 112Herculis, Zeta Aquilae, Theta1 Serpentis, Eta Serpentis...
China, consisting of Theta Serpentis, Delta Herculis, Lambda Herculis, Mu Herculis, Omicron Herculis, 112Herculis, Zeta Aquilae, Eta Serpentis, Nu Ophiuchi...
Eta Herculis (η Her, η Herculis) is a fourth-magnitude star in the constellation Hercules. Eta Herculis is a G-type star. With a stellar classification...
enclosure, consisting of Eta Ophiuchi, Delta Herculis, Lambda Herculis, Mu Herculis, Omicron Herculis, 112Herculis, Zeta Aquilae, Theta¹ Serpentis, Eta Serpentis...
Pi Herculis (π Her, π Herculis) is a third-magnitude star in the constellation Hercules. As one of the four stars in the Keystone asterism (see yellow...
Di Herculis: One Mystery Solved, But Another Takes Its Place". American Astronomical Society. 215: 419.34. Bibcode:2010AAS...21541934Z. DI Herculis – Ein...
enclosure, consisting of Zeta Aquilae; Delta, Lambda, Mu, Omicron and 112Herculis; Theta¹ and Eta Serpentis; Nu Ophiuchi, Xi Serpentis and Eta Ophiuchi...
The stars in this group include ν Ophiuchi, δ Herculis, λ Herculis, μ Herculis, ο Herculis, 112Herculis, ζ Aquilae, θ1 Serpentis, η Serpentis, ξ Serpentis...
Epsilon Herculis, Latinized from ε Herculis, is a fourth-magnitude multiple star system in the northern constellation of Hercules. The combined apparent...
borderline of the enclosure consists of η Serpentis, δ Herculis, λ Herculis, μ Herculis, o Herculis, 112Herculis, η Ophiuchi, ζ Aquilae, θ1 Serpentis, ν Ophiuchi...
Upsilon Herculis (υ Her) is a solitary star in the constellation Hercules. It is visible to the naked eye with an apparent visual magnitude of 4.74. Based...
Phi Herculis (φ Her) is a binary star system in the northern constellation of Hercules. Based upon an annual parallax shift of 15.99 mas as seen from Earth...
Nu Herculis, Latinized from ν Herculis, is a binary and variable star in the constellation of Hercules. With an apparent magnitude of about 4.4, it is...
name for χ Capricorni itself represents the state Qi (齊), together with 112Herculis in Left Wall of Heavenly Market Enclosure (asterism). R.H.Allen had opinion...
Rho Herculis (ρ Her, ρ Herculis) is a double star in the constellation of Hercules. The apparent magnitudes of the components are 4.510 and 5.398, respectively...
Chi Herculis, Latinized from χ Herculis, is a Sun-like star in the northern constellation of Hercules. Based upon an annual parallax shift of 63.16 mas...
Sigma Herculis, Latinized from σ Her, is a binary star system in the northern constellation of Hercules. It has a combined apparent visual magnitude of...
Xi Herculis is a solitary star located within the northern constellation of Hercules. The star is visible to the naked eye with an apparent visual magnitude...
of the enclosure, consisting of ξ Serpentis, δ Herculis, λ Herculis, μ Herculis, ο Herculis, 112Herculis, ζ Aquilae, η Serpentis, θ1 Serpentis, ν Ophiuchi...
Aeneid 8". Classical Philology. 112 (1): 45–62. doi:10.1086/689726. ISSN 0009-837X. S2CID 164402027. sed Romae victoris Herculis aedes duae sunt, unam ad Portam...
Omega Herculis (ω Herculis, abbreviated Ome Her, ω Her) is a binary star system in the northern constellation of Hercules. Based upon an annual parallax...
Latin inscription from the Roman imperial period refers to a priest named Herculis whose father was named Junonis, reflecting the Punic association of "Hercules"...
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