hi astrobunny
you do have interesting pattern with nessus conjunct the north node opposed to sedna conjunct the south node with your sun/chiron conjunction sextile to the north node and sextile to mars.
nessus is associated with difficult and abusive childhoods. sedna is associated with the pursuit of cultural transparency and truth. this together can show a quest to find the truth about these possibly repressed dynamics in your self and in the world at large. with hard aspects to nessus, repressed emotions or memories could be expected, but here with trines to mars and sextile to the sun/chiron conjunction , you have intuitive desires to understand you behavior in light of these inner dynamics. the sun/chiron conjunction shows you to be very intelligent and extremely analytical. often is conjunction can be too critical and insensitive, but with the sextile and trines to sun and chiron, you spontaneously seek to harmonize your behavior with these inner impulse. this self awareness gives you the ability to understand compassionately others with similar emotional trials.
with the nodal axis anchoring these dynamics, you have an intuitive understanding of how to analysis and heal yourself and others from these dynamics.
I would think that many friends that gather around you would have similar psychological histories, but likely more severely repressed or misunderstood. it seems that part of your karma is to help others heal from the potential negative emotional repercussion that nessus can inflict on one.
sedna shows that your pursuit of truth is a major ability to dispel repressions and blocks in yourself and others.
but with the south node conjunct to sedna ,you must always keep in mind that your desire to spell darkness can open you to psychic reprisal. you must be sure that the time and place is always appropriate to shine your light of these sometimes unconscious mental dynamics, especially if there are deep repression or blocks.
you have a extraordinary healing potential as you can heal by shining light on the cause.
with orcus square to sedan and nessus ,you likely have deeper memories that you have yet not uncovered. be sure to heal yourself first before you share your insights with others, because with the mars/chiron and mars/sun midpoint conjunct orcus and square the node, a deep selfishness and possible resentment still lurks inside of you. so though you seek to help others, you are first, helping yourself. and you need to be conscious that you altruistic impulses could be grounded in selfish considerations.
rahu