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S12 Southern Sky Spring

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 shine conspicuously in a yellow color. Coalsack Most spectacular dark for the unaided eye, rich detail in binoculars, northern edge round, southern edge irregular and fuzzy. 4755 ..... , Kappa (κ) Crucis Cluster, resolved in binoculars, impressive in a telescope, arrow shaped with a magnitude 5.8 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 .. .. 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 . . 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 . . 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. • • ••• • 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 • •• 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

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sack oal C

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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.

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