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Variable objects in Corona Borealis

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 Coronae Borealis | Known Variables in Hipparcos data
Type: RCB | C-LC | P-LC | O-LC | O-LC
Coords: (2000) 15h48.6m +2809'
Magnitude range: 5.20 to 14.50
Sequence chart: 041.02 | A | B
Total observations: 45210

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1890..         11    2         3    1                  29
1900..   105  120   91   57   70
1920..        631  462  640  514  494  328  444  457  511
1930..   346  578  525  657  553  591  236  342  831  397
1940..   219   48   46   27   33  206  381  179  178  159
1950..    97  181  174  239  199  289   98  147  171  259
1960..   353  347  438  341  244  215  348  399  621  524
1970..   398  836  791 1695 1523 1087  660  234  347  343
1980..   438  520  613  657  667  740 1119 1141 1221 1195
1990..  1101 1029 1049 1331 1087 1435  707  809 1299 1127
2000..   825

S Coronae Borealis
Type: M | P-LC | O-LC
Period: 360d
Coords: (2000) 15h21.4m +3122'
Magnitude range: 5.90 to 13.98
Sequence chart: 043.01
Total observations: 12595

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1890..         11         1    1    1                   3
1900..     7   77   26   16   28    5  185  212  162  189
1910..   116  120   77  135  155  151  147  170  182  158
1920..   209  211  189  196  263  243  223  194  222  223
1930..   157  251  201  251  202                      134
1940..   106   18   15   36   47   85  155        78
1950..    47  102  101   89   67  124   64   62   53   78
1960..    66  105   95   61   31   34   27   25   24    5
1970..     2    4   28  109  227  302  322  220  110  143
1980..   236  238  165  263  215  192  262  281  283  234
1990..   164  101   78  114  119  112   84   71  132  163
2000..   117

T Coronae Borealis | Four Spectra obtained at WPO
Type: NR | O-LC
Period: 29000d
Coords: (2000) 15h59.5m +2555'
Magnitude range: 3.00 to 11.50
Sequence chart: 025.01
Total observations: 14061

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1940..                                 418        45
1950..     6    2    2    1        18   30   45   42   61
1960..    13  142  185  170  212  199  145  144  286  149
1970..    76  214  225  253  452  511  227   93   71  101
1980..   184  141  200  291  257  245  450  712  710  525
1990..   443  395  336  466  409  713  622  538  615  696
2000..   575

U Coronae Borealis
Type: EA
Period: 3.45d
Coords: (2000) 15h18.2m +3139'
Magnitude range: 8.23 to 8.55
Sequence chart: JEI860706
Total observations: 4

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1990..                                   4

V Coronae Borealis
Type: M | P-LC
Period: 358d
Coords: (2000) 15h49.5m +3934'
Magnitude range: 6.70 to 12.80
Sequence chart: 057.01
Total observations: 2745

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1970..                                        5   42   62
1980..   134  160  122  139  122  114  168  227  207  167
1990..   116   99   86  106  104  110   86   84   89  103
2000..    93

W Coronae Borealis
Type: M | P-LC | O-LC
Period: 238d
Coords: (2000) 16h15.4m +3748'
Magnitude range: 7.30 to 14.40
Sequence chart: 044.01
Total observations: 6291

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1910..                        47   92   89  117  115   92
1920..   108  142  103  117  139  163  211  193  186  171
1930..   157  175  197  197  164
1970..          1                 133  125   97   71   90
1980..   131  111  104  137  134  140  205  240  213  190
1990..   145  122   79  111  120  109   96   44  162  112
2000..    94

X Coronae Borealis
Type: M | O-LC
Period: 241.17d
Coords: (2000) 15h48m54s +3614'54"
Magnitude range: 8.60 to 14.00
Total observations: 54

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1990..                                   9    4   11   16
2000..    14

RR Coronae Borealis
Type: SRB | O-LC
Period: 61d
Coords: (2000) 15h41.4m +3833'
Magnitude range: 7.40 to 8.60
Sequence chart: 220.01 | @
Total observations: 879

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1970..         76   65
1990..         87    3    3  101  124   75   39  115   96
2000..    95

SW Coronae Borealis
Type: SRB | O-LC
Period: 100d?
Coords: (2000) 15h40.8m +3843'
Magnitude range: 7.60 to 8.60
Sequence chart: 220.01 | @
Total observations: 854

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1970..         88   68
1990..         87    3    3   94  124   69   23  104   96
2000..    95

TT Coronae Borealis
Type: SRB
Period: 60d
Coords: (2000) 15h48m32s +2816'52"
Magnitude range: 11.40 to 11.60
Total observations: 6

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1990..               5    1

VW Coronae Borealis (var21)
Type: UGSU
Coords: (2000) 16h00m04s +3311'15"
Magnitude range: 13.90 to [16.00
Sequence chart: TA960528
Total observations: 376

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1990..                                  74  102   56   66
2000..    78

NSV7373 Coronae Borealis
Type: not listed
Coords: (2000) 15h58m10s +2614'52"
Magnitude range: 9.70 to 10.20
Sequence chart: 025.01
Total observations: 10

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
2000..    10

NSV7378 Coronae Borealis (K on 025.01)
Type: RV | O-LC
Coords: (2000) 15h58m58s +2608'05"
Magnitude range: 8.50 to 10.25
Sequence chart: 025.01
Total observations: 178

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1990..                                   2        76   34
2000..    66

Q1996/077 Coronae Borealis
Type: not listed
Coords: (2000) 15h52m00s +3256'55"
Magnitude range: 10.40P to 10.40P
Total observations: 12

Annual
totals   ++0  ++1  ++2  ++3  ++4  ++5  ++6  ++7  ++8  ++9
1960..                                                  3
1970..          1                        1
1980..                    2    3    1         1


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