Southern Sky Spring Constellations

karkoska karkoschka (Typeset by spi publisher services, Delhi) 108 of 163 June 25, 2007 21:7 S12 Southern Sky Spring Constellations NEBULA Position v-Mag. Size Shape Type Vis. Dist. R.A. Dec. h m o • •• 3766 ..... Cen◦ 5 10/ 12 m OC ••• 5 000 ly 11 36.1 −61.62 ◦◦◦ Coalsack Cru◦• (3) (14) 360 Dark Neb. ◦◦◦ 2 000 12 52 −63.3 • 1 ••• 4755 ..... Cru◦ 42 910 m OC ••• 6 000 12 53.6 −60.35 3766 ..... Resolved in binoculars, wonderful in a telescope, interesting shape; some of the brightest stars shine conspicuously in a yellow color. Coalsack Most spectacular dark nebula for the unaided eye, rich detail in binoculars, northern edge round, southern edge irregular and fuzzy. 4755 ..... Jewel Box, Kappa (κ) Crucis Cluster, resolved in binoculars, impressive in a telescope, arrow shaped with a magnitude 5.8 star at the arrow head and the magnitude 6.0 star κ Crucis at the southern end of the arrow, in between lies a yellow star, takes high power. STAR Position V-Mag. B−V Te. Sp. Abs. Name Dist. R.A. Dec. M h m o • π Cen 3.9 −.2 • B5 −1 ........ 330 ly 11 21.0 −54.49 • o Cen 4.3–4.5 0.7 • F2−7 ........5 000 11 31.8 −59.48 • λ Cen ◦ 3.1 0.0 • B9 −2 ........ 420 11 35.8 −63.02 • λ Mus 3.6 0.2 • A 7 1 ........ 130 11 45.6 −66.73 • δ Cen 2.4 −.1 • B2 −3 ........ 380 12 08.3 −50.71 • Cen 4.0 −.2 • B3 −1 ........ 330 12 11.7 −52.37 • δ Cru ◦ 2.8 −.2 • B2 −3 ........ 370 12 15.1 −58.75 • ε Mus 4.0–4.3 1.6 • M5 −1 ........ 300 12 17.6 −67.96 • ζ Cru ◦ 4.1 −.2 • B2 −1 ........ 370 12 18.4 −64.00 • ε Cru ◦ 3.5–3.6 1.4 • K3 −1 ........ 230 12 21.4 −60.40 • α Cru ◦ 0.7 −.2 • B1 −4 ..Acrux .. 340 12 26.6 −63.10 • σ Cen 3.9 −.2 • B3 −2 ........ 450 12 28.0 −50.23 • γ Cru ◦ 1.6 1.5 • M4 −1 . Gacrux . 88, 400 12 31.2 −57.11 • γ Mus 3.8 −.2 • B5 −1 ........ 320 12 32.5 −72.13 • α Mus 2.7 −.2 • B2 −2 ........ 300 12 37.2 −69.14 • τ − Cen 3.9 0.0 • A 2 1 •• 130 12 37.7 48.54 • Sep. 45 γ Cen 2.2 0.0 • A1 −1 ...... 130 12 41.5 −48.96 • β Mus 3.0 −.2 • B2 −2 ........ 320 12 46.3 −68.11 • β Cru ◦ 1.3 −.2 • B0 −4 . Mimosa . 340 12 47.7 −59.69 • µ Cru 3.7 −.2 • B3 −2 ........ 370 12 54.6 −57.18 • δ Mus 3.6 1.2 • K2 1 ........ 90 13 02.3 −71.55 BINARY Position V-Mag. B−V Te. Sep. PA Vis. VARIABLE STAR • • ••• • o Cen 5 5.1 1.0 0.4 •• 265.7 • •• o Cen semireg. • • ••• δ Cen 2.6 4.5 −.1 −.2 •• 269.0 • •• Period ≈ 200d? • •• ” 6.4 ” 0.0 • 216.7 • •• Binary star mag. α • − − • •• Cru ◦ 0.8 4.8 .2 .1 •• 90.0 • • 5.0–5.3 and 5.1. •• • • 1.3 1.7 −.2 −.2 •• 4.0 ε Mus semireg. • • •• γ Cru ◦ 1.6 6.4 1.6 0.2 •• 129 • • Period ≈ 40 d • • • • β Mus 3.6 4.0 −.2 −.2 •• 1.1 • ε Cru◦ irreg. ? • • •• µ Cru 4.0 5.1 −.2 −.1 •• 34.8 • • Extrema 3.4–4.0 108 karkoska karkoschka (Typeset by spi publisher services, Delhi) 109 of 163 June 25, 2007 21:7 ack oals C uth P So o le karkoska karkoschka (Typeset by spi publisher services, Delhi) 110 of 163 June 25, 2007 21:7 S15 Southern Sky Spring Constellations NEBULA Position v-Mag. Size Shape Type Vis. Dist. R.A. Dec. h m o • 1 •• 5128 . Cen◦ 72 12/ 12 S0 Glx •• 16 M ly 13 25.5 −43.02 • ••• 5139 . Cen◦ 4 11 30 VIII GC ••• 17 000 13 26.8 −47.48 • ◦◦ 5460 . Cen◦ 6 13 30 p OC ◦◦◦ 2 200 14 07.6 −48.32 • 1 ◦◦◦ 5822 . Lup◦ 62 14 40 r OC ◦◦ 2 500 15 05.2 −54.33 5128 . Centaurus A, a dark dust band with features, a remarkable galaxy. 5139 . Omega (ω) Centauri, largest, brightest, and most luminous globu- lar cluster, easy with unaided eye, bright elliptical glow in binoculars, tremendous richness of stars in a telescope, unsurpassed, fascinating. 5460 . Resolved in binoculars, widely scattered in a telescope at low power. 5822 . Easy object for binoculars under dark sky, ample stars in a telescope. STAR Position V-Mag. B−V Te. Sp. Abs. Name Dist. R.A. Dec. • M h m o ι Cen 2.8 0.1 • A2 1 ........ 58 ly 13 20.6 −36.71 • J Cen 4.3 −.1 • B3 −1 ........ 360 13 22.6 −60.99 • d Cen 3.9 1.2 • G8 −4 ........1 000 13 31.0 −39.41 • ε Cen 2.3 −.2 • B1 −3 ........ 380 13 39.9 −53.47 • Q Cen 5.0 0.0 • B 8 0 ........ 270 13 41.7 −54.56 • ν Cen ◦ 3.4 −.2 • B2 −3 • 500 13 49.5 −41.69 • Sep. 47 • µ Cen ◦ 3.0–3.5 −.2 • B2 −3 ...... 500 13 49.6 −42.47 • ζ Cen ◦ 2.5 −.2 • B2 −3 ........ 400 13 55.5 −47.29 • ϕ Cen ◦ 3.8 −.2 • B2 −2 ........ 500 13 58.3 −42.10 1 • υ Cen ◦ 3.9 −.2 • B2 −2 ........ 400 13 58.7 −44.80 • β Cen 0.6 −.2 • B1 −5 Hadar, Agena 520 14 03.8 −60.37 • 5 ϑ Cen 2.1 1.0 • K0 1 ........ 62 14 06.7 −36.37 • R Cen 5.8–10 1.9 • M5 −3 ........2 000 14 16.6 −59.91 • η Cen 2.3 −.2 • B1 −3 ........ 300 14 35.5 −42.16 • α Cen −0.3 0.7 • G4 4 Rigil Kentaurus, 4.40 14 39.6 −60.83 • b Cen 4.0 −.2 • B2 −1 Toliman 300 14 42.0 −37.79 • α Cir 3.2 0.3 • F1 2 ........ 53 1442.5−64.98 • κ Cen 3.1 −.2 • B2 −3 ........ 500 14 59.2 −42.10 • δ Cir 4.6 −.1 • O9 −6 ........3 000 15 16.8 −60.94 • β Cir 4.1 0.1 • A3 2 ........ 98 15 17.5 −58.80 • γ Cir 4.5 0.2 • A5 −1 ........ 450 15 23.4 −59.32 BINARY Position V-Mag. B−V Te. Sep. PA Vis. VARIABLE STAR • • •• • J Cen 4.5 6.2 −.1 0.0 •• 60.6 • •• µ Cen◦ irregular • • • • Q Cen 5.3 6.6 −.1 0.1 •• 5.5 • • R Cen • • • α Cen 0.0 1.4 0.7 0.9 •• ’5 10.5 • • Period 550 d • • 2025 2008 8.2 • • Max. 2454083 • • 2011 6.0 • • 2014 4.4 •• • ProximaCentauri 2017 4.2 •• • Closest star, 4.22 ly, • • 2000 2020 5.5 • • mag. 11 companion of, o • • ••• δ Cir 5.1 5.7 −.1 −.1 •• 241.8 • •• 2 south of Toliman. 110 karkoska karkoschka (Typeset by spi publisher services, Delhi) 111 of 163 June 25, 2007 21:7.

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