<p>In the <a href="http://ilrs.gsfc.nasa.gov/docs/2014/196C.pdf" rel="nofollow">JPL report on ephemerides DE430 and DE431</a>,
on page 49, table 8 gives the mass parameters they used for the major planets.
They cite the
<a href="http://dx.doi.org/10.1007/s10569-011-9352-4" rel="nofollow">IAU 2009 system of astronomical constants</a>.
There may be newer estimates, but to verify your own simulation against HORIZONS, you might as well use the same constants they did.</p>

CC BY-SA 3.0
2016-07-23T22:07:18.173Z
2016-07-23T22:07:18.173Z
Mike G
<p>I'm modelling the solar system. I'm using data from <a href="http://ssd.jpl.nasa.gov/horizons.cgi" rel="nofollow">Nasa</a>.
To do this I'm using the barycenter of the planets Jupiter, Saturn, Uranus, Neptune. However the website fails to give the Gravitational Parameter $\mu$ for these barycenters, even though it does do so for Pluto's barycenter.
To make matters more confusing, the $\mu$'s given at <a href="https://en.wikipedia.org/wiki/Standard_gravitational_parameter" rel="nofollow">Wikipedia</a> are slightly different, though I assume these are just out of date.</p>

<p>So I'd like to know if there's an as up to date resource as possible available for these parameters. Paywalls should be OK as long as they are of major publications.
$$\frac{\mathrm{AU}^3}{\mathrm{M}_\odot\cdot\mathrm{day}^2}$$
-form also good.</p>

<mass>
Jupiter, Saturn, Uranus, Neptune system GM
Feyre
# Jupiter, Saturn, Uranus, Neptune system GM

(Asked by: username_0 on 2016-07-23)

I'm modelling the solar system. I'm using data from [Nasa](http://ssd.jpl.nasa.gov/horizons.cgi).
To do this I'm using the barycenter of the planets Jupiter, Saturn, Uranus, Neptune. However the website fails to give the Gravitational Parameter $\mu$ for these barycenters, even though it does do so for Pluto's barycenter.
To make matters more confusing, the $\mu$'s given at [Wikipedia](https://en.wikipedia.org/wiki/Standard_gravitational_parameter) are slightly different, though I assume these are just out of date.

So I'd like to know if there's an as up to date resource as possible available for these parameters. Paywalls should be OK as long as they are of major publications.
$$\frac{\mathrm{AU}^3}{\mathrm{M}\_\odot\cdot\mathrm{day}^2}$$
-form also good.

**Tags:** mass

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## 1 answers

### Answer by username_1 on 2016-07-23. Score: 3 | Accepted answer

In the [JPL report on ephemerides DE430 and DE431](http://ilrs.gsfc.nasa.gov/docs/2014/196C.pdf),
on page 49, table 8 gives the mass parameters they used for the major planets.
They cite the
[IAU 2009 system of astronomical constants](http://dx.doi.org/10.1007/s10569-011-9352-4).
There may be newer estimates, but to verify your own simulation against HORIZONS, you might as well use the same constants they did.


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