Hi,
 
now I compared official data for RA/DE from Ceres,Vesta,Pallas with  those
given from Stellarium 0.12.4 for 2014/03/31  0:00 UT:
 
Official release (Kosmos guide)    ------------------    Stellarium data
----------------------------------------------------------------------------
------------------------------
                RA               DE                                  RA     
            DE
----------------------------------------------------------------------------
--------------------------------
 
Ceres:  14h05m           +2.6°                              14h09m45s    
+2.05°
 
Vesta:  13h56m           +1.6°                               13h58m         
+1.35"
 
Pallas:   9h35m            +3.5"                               9h33m30s     
 +3.31°
 
----------------------------------------------------------------------------
--------------------------------
 
This means the following deviation values from real positions in absolute  
distance:
 
Ceres:  1.23 degrees  (nearly three times the diameter of distant  moon 
disc!!!)
 
Vesta:  0.56 degrees  (a bit more than diameter of nearest moon  disc)
 
Pallas:  0.45 degrees  (a bit less than diameter of distant moon  disc).
 
----------------------------------------------------------------------------
-----------------------------------
 
These are indeed HEAVY deviations from real values - where do they  come 
from?
 
Hope community will find the reason for these bugs....thank you.
 
best regards,
 
Torsten
 
 
 
In a message dated 11.03.2014 20:35:32 Mitteleuropäische Zeit,  
<email address hidden> writes:

Is it a  clean installation of  Stellarium? Have you enable the
correction of  light speed? Which coordinates of minor planets you
checked? Which location  you has as your place?

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https://bugs.launchpad.net/bugs/1291005

Title:
very wrong positions of minor planets

Status in Stellarium:
New

Bug description:
I tried to observe three of the minor  planets during last two weeks
(Pallas, Vesta, Ceres) and had  problems to find their positions at the
night sky using Stellarium  0.12.4 version. With Pallas and Vesta I
succeeded at last, but not  really satisfied when comparing real
constellation with  constellation shown in Stellarium. But with Ceres I
failed  completely last night. At the position where she should have to
be  seen very clearly  there was nothing than black space.  Comparing
your calculated ephemerides with an annual guide I am  using since a
couple of years with great success,  I realized  that Ceres was shown
at a position at least

5 DAYS TOO  LATE !

Similarly did that happen to Pallas and Vesta positions,  but they 
differred 'only' about two days in movement (too late also),  and
Pallas' orbit line is not really what you will observe in the  sky, it 
moves a bit more to the right (smaller values of rectascension I  estimate, 
maybe smaller values of declination too). 

Of course  this experience was some sort of frustrating for me as I trusted 
in calculated  positions of such well-known objects in the sky even if 
Stellarium is an  amateur developped program with no cost. Now I am irritated a 
bit whether  or
not there is to be trusted in the shown positions of other minor  objects.

Maybe there is an unsufficient input of data for  ephemerides of minor 
planets in summary (no disturbing calculation?
wrong equinox or without adjustment to nowadays?). I only can guess, but I  
dont know. It would be fine if you find
the reason for this problem  and it can be solved.

Thank you for listening to my  description!

Best regards,

Torsten  Merkel

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