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Star in the constellation Circinus
Theta Circini (θ Cir), is a binary star located in the southern constellation of Circinus, to the northwest of Alpha Circini. Its name is a Bayer designation
Theta_Circini
Constellation in the southern celestial hemisphere
examples are Theta Circini, T Circini, and AX Circini. Theta Circini is a B-class irregular variable, ranging in magnitude from 5.0 to 5.4. T Circini has a B-type
Circinus
F6 III 4.80 Part of Coma Star Cluster. B A3 V Eta Circini 276 ± 7 Circinus G8 III 5.17 Theta Circini 276 ± 7 Circinus B3 Ve 5.110 Omega² Aquilae 278.9
List of star systems within 250–300 light-years
List_of_star_systems_within_250–300_light-years
100 1 sdO9VII:He6 13.49 68 Cygni 2,200 ± 200 1 O7.5IIIn((f)) 5.00 Delta Circini 2,300 ± 200 1 O8IV + O9.5V 5.09 S Monocerotis (15 Monocerotis) 2,300 ±
List_of_O-type_stars
H.; et al. (June 2008), "The fundamental parameters of the roAp star α Circini", Monthly Notices of the Royal Astronomical Society, 386 (4): 2039–2046
List of nearest stars by spectral type
List_of_nearest_stars_by_spectral_type
(Ping) Star 3.18 Theta Ursae Majoris Star Suspected variable star 3.18 Pi Herculis (Nüchuang) Star Slightly variable 3.19 3.18 Alpha Circini (Xami) Star 3
List of brightest natural objects in the sky
List_of_brightest_natural_objects_in_the_sky
1086/323920 Buscombe, W.; Barkstrom, B. (1971), "The composite spectrum of gamma Circini", Monthly Notices of the Royal Astronomical Society, 152: 37–45, Bibcode:1971MNRAS
List of star systems within 450–500 light-years
List_of_star_systems_within_450–500_light-years
(unconfirmed) 559.1 EK Draconis Draco 111.32 7.701-7.753 G1.5V 560 Alpha Circini (Xami) Cricnus 54.0 ± 0.1 3.18 - 3.21 A7 Vp SrCrEu 564 HD 130948 Boötes
List of Gliese and GJ objects (1-1000)
List_of_Gliese_and_GJ_objects_(1-1000)
Has one known exoplanet. HK Tauri A 428 ± 2 Taurus M1.5 15.10 Epsilon Circini 428 ± 8 Circinus K2.5 III 4.86 WASP-34 (Amansinaya) 428.0 ± 0.9 G5 +10
List of star systems within 400–450 light-years
List_of_star_systems_within_400–450_light-years
37.2880″ K2IV-V or K3V 8.30 Gliese 3138 92.9 G Has 3 exoplanets. Beta Circini$ 93 ± 1 Circinus 15h 17m 30.84945s -58° 48′ 04.3453″ A0 Vn 2.983# HD 70060
List of star systems within 90–95 light-years
List_of_star_systems_within_90–95_light-years
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