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Variable objects in Hydra

Lightcurves: C-LC = Current or Recent, P-LC = 'Pixel' Long-term, A-LC = from Articles, O-LC = Others.
Magnitude ranges are the extreme observed limits.

R Hydrae
Type: M | P-LC | O-LC
Period: 389d
Coords: (2000) 13h29.7m -2317'
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 -1323'
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 -2522.9'
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 +0307'43"
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


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