Heap of Fuel	μ Cancri	5.30	21° 35′ N	08h 05m	123.1
Tegmine	ζ Cancri	4.67	17° 39′ N	08h 10m	124.3
Al Tarf	β Cancri	3.53	09° 11′ N	08h 14m	125.3
Bright Fire	λ Cancri	5.92	24° 01′ N	08h 18m	126.4
	θ Cancri	5.33	18° 06′ N	08h 29m	129.2	H
	η Cancri	5.33	20° 26′ N	08h 30m	129.5
Beehive	ε Cancri	6.29	19° 33′ N	08h 38m	131.4
Ascellus Borealis	γ Cancri	4.66	21° 39′ N	08h 40m	131.9	H
Ascellus Australis	δ Cancri	3.94	18° 20′ N	08h 42m	132.4	H
	ι Cancri	4.03	28° 46′ N	08h 44m	133.0
Acubens	α Cancri	4.26	12° 03′ N	08h 56m	136.0
	ν Cancri	5.45	24° 27′ N	09h 00m	137.0
	κ Cancri	5.23	10° 40′ N	09h 05m	138.3
	ξ Cancri	5.16	22° 03′ N	09h 07m	138.8

... It [Cancer] is the most inconspicious figure in the zodiac, and mythology apologizes for its being there by the story that when the Crab was crushed by Hercules, for pinching his toes during his contest with the Hydra in the marsh of Lerna, Juno exalted it to the sky; whence Columella called it Lernaeus.

Yet few heavenly signs have been subjects of more attention in early days, and few better determined; for, according to Chaldaean and Platonist philosophy, it was the supposed Gate of Men through which souls descended from heaven into human bodies ...

Cancer evidently was the place for reincarnation, and prior to such a rebirth light would be poor in a world filled with liquid:

We need to complete our star list with ω, ψ, χ, φ, and υ which are rising early in Cancer and with π at its end. 14 + 5 + 1 = 20. But then there are also ο, ρ, σ, and τ in between, making the number of Greek lettered stars sum up to 20 + 4 = 24.