Star Range Period (days) (M-m)/P Max Min
R And     6.9-14.3 409d 0.38 Oct May
W And 7.4-13.7 396d 0.42 Apr/May Dec/Jan 2021
RW And    8.7-14.8 430d 0.36 May -----
R Aqr 6.5-10.3 387d 0.42 Jul Jan/Feb
R Aql 6.1-11.5 284d 0.42 Feb, Nov/Dec Jul/Aug
UV Aur* 7.4-10.6 394d 0.50 Oct/Nov Apr/May
V Cam 9.9-15.4 522d 0.31 Jun/Jly Jan
X Cam 8.1-12.6 144d 0.49 Jan/Feb, Jun/Jly, Nov Apr, Aug/Sep
SU Cnc* 10.5-<15.4 187d 0.43 Feb/Mar, Aug/Sep Jun, Dec/Jan 2021
U CVn 9.9-14.6 346d 0.37 Jun Jan/Feb
RT CVn* 9.9-<15.0 254 0.45 Jun/Jly Mar

Mira Predictions - 2020

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/Nov Jan/Feb
T Cas 7.9-11.9 445d 0.56 Oct/Nov Apr
o Cet 3.4-9.3 332d 0.38 Sep/Oct May/Jun
R Com 8.5-14.2 363d 0.38 Jly/Aug Mar
S CrB 7.3-12.9 360d 0.35 Jly/Aug Mar/Apr
V CrB 7.5-11.0 358d 0.41 Sep Apr/May
W CrB 8.5-13.5 238d 0.45 Jun Feb/Mar, Oct/Nov
R Cyg 7.5-13.9 426d 0.35 Oct/Nov May/Jun
S Cyg 10.3-16.0 323d 0.50 May Oct/Nov
V Cyg 9.1-12.8 421d 0.46 Aug/Sep Feb
chi Cyg 5.2-13.4 408d 0.41 Jan Sep

 

 

 

 

 

 

 

 

 

 

 

 

 

Star            Range          Period (days) (M-m)/P Max                           Min                
T Dra 9.6-12.3 422d 0.44 Nov/Dec May/Jun
RU Her 8.0-13.0 485d 0.43 May -----
SS Her 9.2-12.4 107d 0.48 Feb/Mar, Jun, Sep/Oct Jan, Apr, Jly/Aug
R Hya 4.5-9.5 389d 0.49 Oct/Nov Apr/May
SU Lac* 10.3-<15.0 302d 0.40 Jun/Jly Feb/Mar
RS Leo 9.7-<15.5 208d 0.31 Mar, Oct Jan, Jly/Aug
W Lyn 9.9-~15.0 295d 0.40 Sep/Oct May/Jun
X Lyn 10.2-~15.0 321d 0.40 Mar/Apr -----
X Oph 6.8-8.8 329d 0.53 Jan, Nov/Dec May/Jun
U Ori 6.3-12.0 368d 0.38 Apr/May Dec
R Ser 6.9-13.4 356d 0.41 May/Jun Dec/Jan 2021
T UMa 7.7-12.9 257d 0.41 Mar/Apr, Dec Aug/Sep