R Hydrae
Type: M
| P-LC
| O-LC
Period: 389d
Coords: (2000) 13h29.7m -23°17'
Magnitude range: 3.58 to 10.23
Sequence chart: 049.01-02
Total observations: 4812
Annual totals ++0 ++1 ++2 ++3 ++4 ++5 ++6 ++7 ++8 ++9 1890.. 4 15 9 4 1900.. 2 1 7 14 7 5 18 34 35 1910.. 20 55 62 90 96 41 48 30 42 49 1920.. 75 113 76 117 226 176 134 151 137 104 1930.. 89 100 133 141 133 84 77 89 76 97 1940.. 31 6 11 1 2 17 78 32 66 27 1950.. 36 38 32 30 29 37 28 19 13 53 1960.. 59 31 23 34 6 9 29 29 16 3 1970.. 4 9 11 34 45 41 50 42 30 39 1980.. 70 76 76 80 4 1 3 56 1990.. 19 54 66 12 23 59 29 2000.. 38
U Hydrae
Type: SRB
Period: 450d?
Coords: (2000) 10h37.6m -13°23'
Magnitude range: 4.10 to 6.00
Sequence chart: 109.01
| @
Total observations: 361
Annual totals ++0 ++1 ++2 ++3 ++4 ++5 ++6 ++7 ++8 ++9 1890.. 8 37 13 4 1970.. 32 17 1990.. 38 3 24 43 44 16 2 30 24 2000.. 26
RW Hydrae
Type: ZAND
Period: 370d
Coords: (2000) 13h34m18s -25°22.9'
Magnitude range: 8.55 to 8.65
Sequence chart: 079.01
Total observations: 3
Annual totals ++0 ++1 ++2 ++3 ++4 ++5 ++6 ++7 ++8 ++9 2000.. 3
CT Hydrae
Type: UGSS
Period: 151.7d?
Coords: (2000) 08h51m05s +03°07'43"
Magnitude range: ? to [15.94
Sequence chart: VSNET
Total observations: 68
Annual totals ++0 ++1 ++2 ++3 ++4 ++5 ++6 ++7 ++8 ++9 1990.. 18 24 13 2000.. 13
