The placement of Sun in the 9th house for Scorpio lagna can have mixed effects on an individual's life. It can bring about a sense of responsibility and authority while also posing some challenges. Sun is the natural karaka of the 1st and 10th house and represents reputation, power, and social image. In this case, Sun is also the lord of the 10th house which further strengthens its significance.
Firstly, it needs to be noted that Sun is placed in a neutral sign state which means it does not receive any direct positive or negative influence from the sign. However, as Sun represents authority and power, it can cause conflicts with authority figures like father or boss if they are not handled tactfully. It is important for individuals to learn how to exercise their power without being overly dominating or aggressive.
The ninth house represents higher education, spirituality, long-distance travel, and luck among other things. With Sun placed here, individuals may be inclined towards seeking knowledge and exploring different cultures through travel. This placement often gives an affinity for religious practices and philosophies too.
This placement also signifies a good relationship between father and child with mutual respect as both sun (father) & Jupiter (karaka of good relations with father 9) complement each other while impacting 9th house respectively.
As Sun is aspecting the third house which represents communication skills, effort etc., it would provide additional energy required to excel in their efforts related aspect signified by this house . With Sun in this position individuals may come across as assertive speakers with strong opinions that need to be defended.
However,lack of sensitivity towards others' opinions could cause clashes with friends or siblings too so one must make sure not to force one's ideas on others.
Since this position has no direct support from any benefic planets but as previously mentioned sun represent law by itself so native born under this combination could opt for pursuing career in legal practices or public administration. This position may not provide tremendous financial success as Sun is more focused on power and reputation rather than monetary gains.
This combination could work well for authors or publishing industry who intend to present their thoughts in front of the mass audience.
In conclusion, Sun's placement in the 9th house has significant effects on an individual’s life with regards to power, authority, knowledge, and father-child relationship. It can be beneficial if handled with care and mindful thinking but careful handling is required as it comes with a tad bit egoistical trait associated with Sun itself.