A RECALCULATION OF THE SECULAR ACCELERATION OF IO

Authors
GOLDSTEIN SJ JACOBS KC
Citation
Sj. Goldstein et Kc. Jacobs, A RECALCULATION OF THE SECULAR ACCELERATION OF IO, The Astronomical journal, 110(6), 1995, pp. 3054-3057
Citations number
32
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astronomical journal → ACNP
ISSN journal
00046256
Volume
110
Issue
6
Year of publication
1995
Pages
3054 - 3057
Database
ISI
SICI code
0004-6256(1995)110:6<3054:AROTSA>2.0.ZU;2-G
Abstract
From reanalysis of 17th century and 20th century eclipse observations, with three different models for the earth's rotation, and from the us e of both longitude comparison and mean motion comparison, we find tha t Io has a fractional acceleration of (4.54+/-0.95)x10(-10) yr(-1). If Io can be considered a Keplerian oscillator, its orbital semi-major a xis decreases by 13 cm/yr. (C) 1995 American Astronomical Society.