BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y …€¦ · It will be shown presently that this...

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© Copyright 1963: Instituto de Astronomía, Universidad Nacional Autónoma de México BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y TACUBAYA, VOL. 3, N°23, 1963.

Transcript of BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y …€¦ · It will be shown presently that this...

Page 1: BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y …€¦ · It will be shown presently that this period of timc determines a rate of shrinkage which, in 3 X 109 years, brings turns

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BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y TACUBAYA, VOL. 3, N°23, 1963.

Page 2: BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y …€¦ · It will be shown presently that this period of timc determines a rate of shrinkage which, in 3 X 109 years, brings turns

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ight

196

3: In

stitu

to d

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nom

ía, U

nive

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ad N

acio

nal A

utón

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Page 3: BOLETÍN DE LOS OBSERVATORIOS DE TONANTZINTLA Y …€¦ · It will be shown presently that this period of timc determines a rate of shrinkage which, in 3 X 109 years, brings turns

© C

opyr

ight

196

3: In

stitu

to d

e A

stro

nom

ía, U

nive

rsid

ad N

acio

nal A

utón

oma

de M

éxic

o