kanakarucirā kāvyākhyātā shanaishcaraNócitā
shritagurubudhā bhāsvadrūpā dvijādhipasévitā
vihitavibhavā nityam vishNóh padé maNipāduké
tvamasi mahatī vishvéShām nah shubhā grahamaNdalī

Oh Manipaaduka! You have a gold-lustre of red hue.
You have a vital place in Ramayana etc. You move about only slowly.
Gurus and learned ones cling to you. You shine like the sun.
Eminent Brahmins worship you. You stay put to the Lord's Feet permanently.
The planets, namely - the red Angaraka, Sukra alias Kavya, Sani who is slow moving,
Guru and Budha, Soorya and Chandra - these encircle in their paths in the celestial sphere.
They will prove auspicious in specific periods, being otherwise at other times.
But you are always auspicious, conferring benefits on us permanently.

.... for Navagraha dhOsham, there is no need for SrI VaishNavALs  to do Navagraha Saanthi Homams.
Recitation of the 749th SlOkam of SrI RanganAtha PaadhukA Sahasram daily would ward off the Nava graha  DhOsham:

NaaL yenna seyyum kOL yenna seyyum
Yennappan ThALL  paRRinARkku
meaning:
What troubles can the nakashathrams, Thithis and Grahams cause for one,
who attaches Himself firmly and solely to the  Feet of the Lord and the SaThAri there.
                                                                                                --- Shriman V Sadagopan (http://sadagopan.org/srps/srps23.htm)