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Table 1

Variable stars in M 28.

Name RA (J2000) Dec Period Old period Type Old type Other ID
(hh:mm:ss.ss) (dd:mm:ss.s) (days) (days)

V2 18:24:29.15 –24:51:06.6 58 LPV Irr
V3 18:24:30.17 –24:50:18.5 49 LPV Irr
V4 18:24:30.12 –24:51:36.4 13.37 13.462 W Vir W Vir
V5 18:24:29.48 –24:51:52.6 0.645 0.644360 RRab RR0
V7 18:24:44.19 –24:50:30.6 320.0 LPV, f Mira, f
V10 18:24:39.51 –24:53:26.1 LPV/Irr Irr
V11 18:24:31.48 –24:51:33.0 0.542 0.542767 RRab RR0
V12 18:24:43.31 –24:52:56.1 0.578 0.578228 RRab RR0
V13 18:24:25.77 –24:52:33.6 0.656 0.654923 RRab, f? RR0
V17 18:24:35.84 –24:53:15.8 62 91.7 RV Tau RV Tau
V18 18:24:36.54 –24:51:49.9 0.640 0.640151 RRab RR0
V19 18:24:30.84 –24:51:56.0 0.3119 0.335 RRc RR1
V20 18:24:33.11 –24:51:42.9 0.4948 0.49774 RRab? RR0
V21 18:24:32.94 –24:51:59.0 29.93 LPV W Vir
V22 18:24:30.98 –24:52:01.8 0.323 0.99538 RRc BL Her
V23 18:24:30.25 –24:52:03.0 0.292 0.29231 RRc RR1
NV1 18:24:28.89 –24:52:09.9 0.748 RRab
NV2 18:24:33.59 –24:52:32.3 0.297 RRc
NV3 18:24:32.31 –24:52:32.2 0.323 RRc, f
NV4 18:24:24.13 –24:54:36.6 0.261 RRc
NV5 18:24:27.67 –24:52:15.0 0.311 RRc RC133?
NV6 18:24:33.45 –24:52:10.6 0.308 RRc
NV7 18:24:32.17 –24:52:00.4 0.329 RRc
NV8 18:24:33.60 –24:52:07.1 13.53 W Vir? LPV?
NV9 18:24:33.05 –24:51:28.9 LPV

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