Star Range Period (days) (M-m)/P Max Min
R And     6.9-14.3 409d 0.38 May/Jun Oct/Nov
W And 7.4-13.7 396d 0.42 Jun/Jly Jan
RW And    8.7-14.8 430d 0.36 May/Jun Jan
R Aqr 6.5-10.3 387d 0.42 Aug Mar
R Aql 6.1-11.5 284d 0.42 Aug Apr
UV Aur* 7.4-10.6 394d 0.50 Jan Aug
V Cam 9.9-15.4 522d 0.31 Nov/Dec Jun
X Cam 8.1-12.6 144d 0.49 Apr & Aug Jan, Jun & Nov
SU Cnc* 10.5-<15.4 187d 0.43 Apr & Oct Jan & Jly
U CVn 9.9-14.6 346d 0.37 Apr/May Dec
RT CVn* 9.9-<15.0 254 0.45 Mar & Dec Aug
           

Mira Predictions - 2021

Predicted Dates for Maximum and Minimum of Mira Stars on the BAAVSS programme.

Predictions are shown only to the nearest month when the star can be seen at Maximum or Minimum.  This is done simply to avoid bias!

Where two months are given, the prediction could be in the latter of one or the beginning of the other.

At present there are no BAA charts for SU Cnc, U CVn, RT CVn, RS Leo & X Lyn.  Please use the AAVSO VSP for these stars.

*=Extreme Range.  <=Fainter than.  ~= Approximately.  M-m = the fraction of the period taken in rising from Min.(m) to Max.(M).

These predictions can also be found in the BAA Handbook.

 

 

 

 

 

 

 

 

 

Star Range Period (days) (M-m)/P Max Min
S Cas         9.7-14.8      612d 0.43 --- Oct
T Cas 7.9-11.9 445d 0.56 Dec/Jan 2022 Apr
o Cet 3.4-9.3 332d 0.38 Aug Apr
R Com 8.5-14.2 363d 0.38 Jly/Aug Mar
S CrB 7.3-12.9 360d 0.35 Jly Mar
V CrB 7.5-11.0 358d 0.41 Oct May
W CrB 8.5-13.5 238d 0.45 Feb/Mar & Oct Jly
R Cyg 7.5-13.9 426d 0.35 Dec Jly
S Cyg 10.3-16.0 323d 0.50 Apr/May Sep/Oct
V Cyg 9.1-12.8 421d 0.46 Nov Apr/May
chi Cyg 5.2-13.4 408d 0.41 Feb/Mar Oct

 

 

 

 

 

 

 

 

 

 

 

 

 

Star            Range          Period (days) (M-m)/P Max                           Min                
T Dra 9.6-12.3 422d 0.44 --- Jly
RU Her 8.0-13.0 485d 0.43 Aug/Sep Jan/Feb
SS Her 9.2-12.4 107d 0.48 Jan, Apr & Sep Feb/Mar, Jun & Nov
R Hya 4.5-9.5 389d 0.49 Oct/Nov Apr
SU Lac* 10.3-<15.0 302d 0.40 Apr/May Jan & Oct/Nov
RS Leo 9.7-<15.5 208d 0.31 Apr & Nov Feb & Sep
W Lyn 9.9-~15.0 295d 0.40 Jly/Aug Mar/Apr
X Lyn 10.2-~15.0 321d 0.40 Jan/Feb & Dec/Jan 2022 Aug
X Oph 6.8-8.8 329d 0.53 Oct Apr
U Ori 6.3-12.0 368d 0.38 Apr/May Dec
R Ser 6.9-13.4 356d 0.41 Apr/May Nov/Dec
T UMa 7.7-12.9 257d 0.41 Aug/Sep May