Segue un prospetto delle stelle principali della costellazione dell'Altare, elencate per magnitudine decrescente.
Nome Designazioni Coordinate Magnitudini Dist. (al) Classe spettrale Note B F HD HIP AR Dec vis. ass. β Ara β 157244 85258 2.84 −3.49 603 K3Ib-II Karnot Mizbeach, Karnothamizbeach α Ara α 158427 85792 2.84 −1.51 242 B2Vne Choo, Tchou; stella Be ζ Ara ζ 152786 83081 3.12 −3.11 574 K5III Tseen Yin, Korban γ Ara γ 157246 85267 3.31 −4.40 1136 B1Ib Zadok, Tzadok δ Ara δ 158094 85727 3.60 −0.19 187 B8V Tseen Yin θ Ara θ 165024 88714 3.65 −3.81 1012 B2Ib Tao Shou η Ara η 151249 82363 3.77 −1.14 313 K5III stella doppia ε1 Ara ε1 152980 83153 4.06 −0.79 304 K4III Tso Kang σ Ara σ 159217 86092 4.56 −0.80 385 A0V λ Ara λ 160032 86486 4.76 3.06 71 F3IV μ Ara μ 160691 86796 5.12 4.20 50 G3IV-V ha quattro pianeti κ Ara κ 157457 85312 5.19 −0.24 398 K1III ι Ara ι 157042 85079 5.21 −1.51 721 B2IIIne variabile Gamma Cassiopeiae π Ara π 159492 86305 5.25 2.12 137 A7V ε2 Ara ε2 153580 83431 5.27 3.17 86 F6V HD 157661 157661 85389 5.28 −1.04 599 B8V 41 Ara 41 156274 84720 5.47 5.75 29 G8V stella doppia vicina; HD 152824 152824 83057 5.53 −0.50 523 B9IV HD 150898 150898 82171 5.55 −3.48 2090 B0Iab HD 150136 150136 81702 5.57 O5 HD 150168 150168 81733 5.62 −4.38 3260 B1II HD 153053 153053 83187 5.64 2.12 165 A3V ν1 Ara ν1, υ1 161783 87314 5.68 −1.33 823 B2V + B3V V539 Arae; variabile Algol HD 156838 156838 85147 5.69 −2.82 1638 B2IV HD 157753 157753 85470 5.72 0.81 312 K2III HD 153716 153716 83535 5.73 −1.00 723 B5IV HD 150745 150745 82110 5.74 −1.31 838 B2IV-V HD 156854 156854 85068 5.76 0.27 409 G8/K0III HD 156942 156942 85169 5.76 −0.92 706 B8Ib/II HD 160263 160263 86552 5.78 −0.75 660 A0V HD 156768 156768 85049 5.86 −1.05 786 G8Ib/II HD 154903 154903 84248 5.87 0.87 327 K0III-IV HD 159463 159463 86248 5.89 0.76 346 K0III-IV HD 157662 157662 85409 5.90 −2.65 1672 B9II HD 151967 151967 82672 5.91 −0.71 688 M0III HD 156091 156091 84731 5.93 −3.06 2050 K2IIICN... HD 157819 157819 85520 5.93 −1.27 898 G8II/III HD 152527 152527 82902 5.94 1.01 315 A0III HD 155035 155035 84105 5.94 −1.09 830 M1/M2III HD 150576 150576 81966 5.96 −0.66 688 G8III HD 153221 153221 83216 5.98 0.60 389 G5IV HD 152082 152082 82806 5.99 0.30 448 A0III HD 158220 158220 85751 5.99 −3.10 2145 B7II/III HD 158476 158476 85788 6.04 −2.91 2012 F8/G0Ib HD 153791 153791 83481 6.07 −0.33 620 A2/A3V HD 155341 155341 84311 6.08 −1.90 1283 M1/2II/III+A HD 159018 159018 86064 6.09 −1.50 1072 B9III HD 161420 161420 87174 6.09 2.55 166 A9IV ν2 Ara ν2, υ2 161917 87379 6.09 0.13 508 B9.5III/IV HD 162123 162123 87404 6.09 −0.51 682 G6III HD 165493 165493 88859 6.13 −0.86 815 B7/B8II HD 149485 149485 81507 6.16 0.08 537 B8Vn HD 149837 149837 81657 6.17 3.73 100 F2III-IV HD 157599 157599 85393 6.17 0.26 495 B8/B9V HD 150421 150421 81847 6.22 F5Iab HD 157524 157524 85480 6.22 −0.68 782 B7/B8V HD 153261 153261 83323 6.26 −2.96 2280 B2IVne HD 158895 158895 86088 6.26 −1.90 1399 B5II/III HD 163071 163071 87928 6.26 −1.74 1299 B4III HD 156331 156331 84759 6.27 2.54 182 F2III HD 160342 160342 86628 6.28 −2.01 1482 M3III HD 149989 149989 81650 6.30 2.86 159 A9V HD 152478 152478 82868 6.30 −0.51 751 B3Vnpe HD 158907 158907 85975 6.32 0.52 470 G6/G8III HD 154555 154555 83984 6.37 −1.87 1449 B8II/III HD 153201 153201 83269 6.40 −1.40 1181 Ap... HD 153370 153370 83321 6.43 1.45 323 A7V HD 151566 151566 82418 6.45 2.07 245 A5+... HD 164896 164896 88675 6.46 −1.89 1523 A2III HD 150897 150897 82091 6.47 0.78 448 A1V HD 152220 152220 82723 6.49 −1.68 1405 K1II HD 155951 155951 84700 6.50 0.39 542 K1III R Ara 149730 81589 6.73 2.20 262 B9IV/V variabile Algol HD 154857 154857 7.25 223 ha un pianeta
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