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Today numbers from this catalogue are used with the prefix "Lalande", or "Lal". [50]) Lalande assigned Epsilon Eridani magnitude 3. [48] [49] Also in 1801 it was included in the catalogue of Johann Bode, in which about 17,000 stars were grouped into 102 constellations and numbered (Epsilon Eridani got the number 159 in the constellation ...
A light curve for Xi Bootis, showing the average of the b and y magnitudes as a function of time. Adapted from Lockwood et al. (2007) [11]. The primary star in this system is a BY Draconis variable with an apparent magnitude that varies from +4.52 to +4.67 with a period just over 10 days long, and is classified as a G-type main-sequence star.
17α-Estradiol (also known as 17α-E2, 17-epiestradiol, alfatradiol, or estra-1,3,5(10)-triene-3,17α-diol) is a minor and weak endogenous steroidal estrogen that is related to 17β-estradiol (better known simply as estradiol). [2]
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