Theory
From Startrek
Current Theory as of 22 April 2009 for the codes at this point.
In the constellation phase we have been presented with two clues.
APUS:01-05 CHAMAELEON:13-23
These constellations relate to Petrus Plancius and Johann Bayer. Johann Bayer is the name of the person in PHPchatuser5's Twitter profile.
Each of the PHPChatusers has a Greek alphabet letter attached to them. PHPchatuser1=Alpha PHPchatuser2=Beta PHPchatuser3=Gamma PHPchatuser4=Delta PHPchatuser5=Epsilon.
Johann Bayer used the same lettering system to identify stars in the constellations.
In the constellation APUS which came from PHPChatUser5 aka Epsilon the Epsilon star is a B class star. In CHAMAELEON the clue from PHPChatUser2 the B class star is Beta.
The length of the name correlates with the numbers after the : in the clue as a checksum.
Based on those items the remaining stars with B type stars in the Johann Bayer/Petrus Plancius grouping is as follows:
Alpha (DORADO|GRUS|MUSCA|PAVO), Gamma(GRUS|MUSCA), Delta TUCANA
With this we have extrapolated the possible 10 sequences available with this theory.
APUS:01-05 TUCANA:06-12 CHAMAELEON:13-23 DORADO: 24-30 GRUS:31-35
APUS:01-05 TUCANA:06-12 CHAMAELEON:13-23 DORADO:24-30 MUSCA:31-36
APUS:01-05 TUCANA:06-12 CHAMAELEON:13-23 GRUS:24-28 MUSCA:29-34
APUS:01-05 TUCANA:06-12 CHAMAELEON:13-23 MUSCA:24-29 GRUS:30-34
APUS:01-05 TUCANA:06-12 CHAMAELEON:13-23 PAVO:24-28 GRUS:29-33
APUS:01-05 TUCANA:06-12 CHAMAELEON:13-23 PAVO:24-28 MUSCA:29-34
APUS:01-05 DORADO:06-12 CHAMAELEON:13-23 GRUS:24-28 TUCANA:29-35
APUS:01-05 DORADO:06-12 CHAMAELEON:13-23 MUSCA:24-29 TUCANA:30-36
APUS:01-05 DORADO:06-12 CHAMAELEON:13-23 TUCANA:24-30 GRUS:31-35
APUS:01-05 DORADO:06-12 CHAMAELEON:13-23 TUCANA:24-30 MUSCA:31-36
Constellation and links to checksum here http://startrek.wikibruce.com/Speculation/Constellations