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## Estimations of the change of the Sun's mass and the gravitation constant based on high-accuracy observations of planets and spacecraft

Труды ИПА РАН, вып. 26, 65–74 (2012)

Ключевые слова: gravitation constant, positional observation, Sun's mass

### Аннотация

More than 635 000 positional observations of planets and spacecraft of different types have been used for estimating possible changes of the gravitation constant, the solar mass, and semi-major axes of planets. The analysis of the observations has been performed on the basis of the EPM2010 ephemerides of IAA RAS in post-newtonian approximation. The estimation of the change of the geliocentric gravitation constant GM has been obtained M /GM= (-5.0 4.1) 10 in year (3). The positive annual changes of semi-major axes /a have been determined simultaneously for the planets Mercury, Venus, Mars, Jupiter, Saturn provided with high-accuracy sets of the observations, as expected if the geliocentric gravitation constant is decreasing in century wise. Taking into account the maximal limits of the possible MSun change it was found from the GM change obtained that the gravitation constant /G falls within the interval -4.210 < /G < +7.510 per year with 95 % probability

### Цитирование

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E. Pitjeva, N. Pitjev. Estimations of the change of the Sun's mass and the gravitation constant based on high-accuracy observations of planets and spacecraft // Труды ИПА РАН. — 2012. — Вып. 26. — С. 65–74. @article{pitjeva2012, abstract = {More than 635 000 positional observations of planets and spacecraft of different types have been used for estimating possible changes of the gravitation constant, the solar mass, and semi-major axes of planets. The analysis of the observations has been performed on the basis of the EPM2010 ephemerides of IAA RAS in post-newtonian approximation. The estimation of the change of the geliocentric gravitation constant GM has been obtained M /GM= (-5.0 4.1) 10 in year (3). The positive annual changes of semi-major axes /a have been determined simultaneously for the planets Mercury, Venus, Mars, Jupiter, Saturn provided with high-accuracy sets of the observations, as expected if the geliocentric gravitation constant is decreasing in century wise. Taking into account the maximal limits of the possible MSun change it was found from the GM change obtained that the gravitation constant /G falls within the interval -4.210 < /G < +7.510 per year with 95 % probability}, author = {E. Pitjeva and N. Pitjev}, issue = {26}, journal = {Труды ИПА РАН}, keyword = {gravitation constant, positional observation, Sun's mass}, pages = {65--74}, title = {Estimations of the change of the Sun's mass and the gravitation constant based on high-accuracy observations of planets and spacecraft}, url = {http://iaaras.ru/library/paper/899/}, year = {2012} } TY - JOUR TI - Estimations of the change of the Sun's mass and the gravitation constant based on high-accuracy observations of planets and spacecraft AU - Pitjeva, E. AU - Pitjev, N. PY - 2012 T2 - Труды ИПА РАН IS - 26 SP - 65 AB - More than 635 000 positional observations of planets and spacecraft of different types have been used for estimating possible changes of the gravitation constant, the solar mass, and semi-major axes of planets. The analysis of the observations has been performed on the basis of the EPM2010 ephemerides of IAA RAS in post-newtonian approximation. The estimation of the change of the geliocentric gravitation constant GM has been obtained M /GM= (-5.0 4.1) 10 in year (3). The positive annual changes of semi-major axes /a have been determined simultaneously for the planets Mercury, Venus, Mars, Jupiter, Saturn provided with high-accuracy sets of the observations, as expected if the geliocentric gravitation constant is decreasing in century wise. Taking into account the maximal limits of the possible MSun change it was found from the GM change obtained that the gravitation constant /G falls within the interval -4.210 < /G < +7.510 per year with 95 % probability UR - http://iaaras.ru/library/paper/899/ ER -