There are different types of mantras for each & every planets in Astrology.
VEDIC MANTRA and BEEJ MANTRA (also termed as 'TANTRIC MANTRA') are most popular to please the planets. It is prooved & from my experience BEEJ MANTRA gives results quickly in Kaliyug and that is the main reason most of the astrologers suggests BEEJ MANTRA more often than the VEDIC MANTRA


Sun (Surya)
Om hram hrim hraum sah suryaya namah
* Should chant this BEEJ MANTRA for Sun (Surya) related troubles and Mahadasha or Antardasha of Sun (Surya) 6000 times in 40 days.

Moon (Chandra)
Om shram shrim shraum sah chandraya namah
* Should chant this BEEJ MANTRA for Moon (Chandra) related troubles and Mahadasha or Antardasha of Moon (Chandra) 10,000 times in 40 days.

Mars (Mangal)
Om kram krim kraum sah bhaumaya namah
* Should chant this BEEJ MANTRA for Mars (Mangal) related troubles and Mahadasha or Antardasha of Mars (Mangal) 7000 times in 40 days.

Mercury (Budh)
Om bram brim braum sah budhaya namah
* Should chant this BEEJ MANTRA for Mercury (Budh) related troubles and Mahadasha or Antardasha of Mercury (Budh) 17,000 times in 40 days.

Jupiter (Guru)
Om gram grim graum sah gurave namah
* Should chant this BEEJ MANTRA for Jupiter (Guru) related troubles and Mahadasha or Antardasha of Jupiter (Guru)16,000 times in 40 days.

Venus (Shukra)
Om dram drim draum sah shukraya namah
* Should chant this BEEJ MANTRA for Venus (Shukra) related troubles and Mahadasha or Antardasha of Venus (Shukra) 20,000 times in 40 days.

Saturn (Shani)
Om pram prim praum sah shanaicharaya namah
* Should chant this BEEJ MANTRA for Saturn (Shani) related troubles and Mahadasha or Antardasha of Saturn (Shani) 19,000 times in 40 days.

Rahu
Om bhram bhrim bhraum sah rahave namah
* Should chant this BEEJ MANTRA for Rahu related troubles and Mahadasha or Antardasha of Rahu 18,000 times in 40 days.

Ketu
Om sram srim sraum sah ketave namah
* Should chant this BEEJ MANTRA for Ketu related troubles and Mahadasha or Antardasha of Ketu 7000 times in 40 days.