Hello Steven and all:
I watched some of Joni Patri's video, who is a Vedic astrologer, and she chose a possible birth time for him of 2 something pm which would put his Ascendant on Libra. Then she gave all kinds of reasons why it made sense, but mostly because Neptune was there and he is into being filmed, a Neptune thing (which does make sense). I myself chose a possible later time with a Scorpio ASC (which is maybe Libra in Vedic, but not at the degree I chose.
The chart below was a wild assumption regarding the August eclipse degree of 28 Leo (or a square or opposition to it) being either on an angle or having the houses which are ruled by those three planets (Saturn, Uranus, Jupiter) receiving pertinent effects after the Eclipse (and with the transits of Mars afterwards). Since Saturn on ASC, especially in Scorpio, seemed to match Mr. Bourdain's countenance and self-presentation, I'm hanging on to that one for awhile. I've done no rectification or anything like that, but if you look, the 12th house is also ruled by Pluto which was the point of the eclipse last year. The ruler of the 12th can certainly receive a hit if one's doctor has just told you that you probably have, say, cancer, and that you have about a year to live.
The last show that was newly aired on the travel channel showed Bourdain extremely thin, more than ever, and with a drawn look to his face. If he was terminal, it is possible that he told no one, and just toughed it out. SA Jupiter was conjunct to Neptune also, the ruler of his 4th house of endings.
Just a try.
-Barbara