<p>If you search for "Astronomical Ephemeris" you will find plenty of resources.  For example:  <a href="http://astropixels.com/skycal/skycalmain.html" rel="nofollow noreferrer">http://astropixels.com/skycal/skycalmain.html</a></p>

CC BY-SA 4.0
2018-10-08T04:21:27.837Z
I looked at the site you linked to, as well as this one: https://eclipse.gsfc.nasa.gov/TYPE/ephemeris.html. You have to know the dates beforehand to use them as far as I can see.
posfan12
CC BY-SA 4.0
2018-10-08T04:39:21.347Z
Also, JPL HORIZONS only shows one value (the closest time in the future) per ephemeris, not a table listing several values spread across decades, centuries, etc.
posfan12
CC BY-SA 4.0
2018-10-08T06:10:15.653Z
@postfan12 - please make question more specific.
Dr Chuck
CC BY-SA 4.0
2018-10-06T08:35:57.620Z
2018-10-06T08:35:57.620Z
Dr Chuck
<p>It's relatively easy to find tables for Earth aphelion and perihelion dates and times, such as this one:</p>

<p><a href="http://www.astropixels.com/ephemeris/perap2001.html" rel="nofollow noreferrer">http://www.astropixels.com/ephemeris/perap2001.html</a></p>

<p>But what about the other planets in the solar system? Are there tables or lists of aphelion and perihelion dates for them too? I checked Wikipedia, but it only lists perihelion distances and not dates, so it is insufficient.</p>

<p>Update:</p>

<p>This is the error I get on the SPICE web interface.</p>

<p><a href="https://i.sstatic.net/G5ZiR.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/G5ZiR.png" alt="enter image description here"></a></p>

CC BY-SA 4.0
2018-10-08T21:39:53.640Z
Thanks. I tried the SPICE web interface (https://wgc.jpl.nasa.gov:8443/webgeocalc/#NewCalculation), but I got an error when for instance studying Jupiter: "Insufficient ephemeris data has been loaded to compute the state of 599 (JUPITER) relative to 10 (SUN) at the ephemeris epoch 2200 FEB 21 00:01:04.183." Since the outer planets orbit so so slowly, I need a wider range of samples.
posfan12
CC BY-SA 4.0
2018-10-08T21:42:41.130Z
There is a web interface too (https://wgc.jpl.nasa.gov:8443/webgeocalc/#NewCalculation) which is where I got the error.
posfan12
CC BY-SA 4.0
2018-10-08T21:53:01.370Z
I edited my post, sorry. Anyway, I used the "Solar System Kernels" option in the SPICE web interface. Is there a better kernel I should be using instead?
posfan12
CC BY-SA 4.0
2018-10-08T22:48:22.243Z
That works. I would mark that as the answer. I am curious as to why I had to use the barycenter, thanks.
posfan12
<planet><orbital-elements><resource-request>
Tables of aphelion/perihelion dates for other planets?
posfan12
# Tables of aphelion/perihelion dates for other planets?

(Asked by: username_0 on 2018-10-06)

It's relatively easy to find tables for Earth aphelion and perihelion dates and times, such as this one:

<http://www.astropixels.com/ephemeris/perap2001.html>

But what about the other planets in the solar system? Are there tables or lists of aphelion and perihelion dates for them too? I checked Wikipedia, but it only lists perihelion distances and not dates, so it is insufficient.

Update:

This is the error I get on the SPICE web interface.

[![enter image description here](https://i.sstatic.net/G5ZiR.png)](https://i.sstatic.net/G5ZiR.png)

**Tags:** planet, orbital-elements, resource-request
> **Comments:**
> **username_0**: Thanks. I tried the SPICE web interface (https://wgc.jpl.nasa.gov:8443/webgeocalc/#NewCalculation), but I got an error when for instance studying Jupiter: "Insufficient ephemeris data has been loaded to compute the state of 599 (JUPITER) relative to 10 (SUN) at the ephemeris epoch 2200 FEB 21 00:01:04.183." Since the outer planets orbit so so slowly, I need a wider range of samples.  
> **username_0**: There is a web interface too (https://wgc.jpl.nasa.gov:8443/webgeocalc/#NewCalculation) which is where I got the error.  
> **username_0**: I edited my post, sorry. Anyway, I used the "Solar System Kernels" option in the SPICE web interface. Is there a better kernel I should be using instead?  
> **username_0**: That works. I would mark that as the answer. I am curious as to why I had to use the barycenter, thanks.  

---

## 1 answers

### Answer by username_1 on 2018-10-06. Score: 0

If you search for "Astronomical Ephemeris" you will find plenty of resources. For example: <http://astropixels.com/skycal/skycalmain.html>

> **Comments:**
> **username_0**: I looked at the site you linked to, as well as this one: https://eclipse.gsfc.nasa.gov/TYPE/ephemeris.html. You have to know the dates beforehand to use them as far as I can see.  
> **username_0**: Also, JPL HORIZONS only shows one value (the closest time in the future) per ephemeris, not a table listing several values spread across decades, centuries, etc.  
> **username_1**: @postfan12 - please make question more specific.  

---

