Nakshatras

NAKSHATRA
Just like the Rashis, the Nakshatras also break up the zodiac (360 degrees) into equally spaced segments. There are 27 Nakshatras, each taking up 13'20" . Each Nakshatra has a symbol, various attributes, and a planetary ruler.
नक्षत्र चंद्र मार्ग में तारों के समूह को कहा जाता है जो काफी चमकदार होते हैं और आकाश-मंडल में दिखाई देते हैं। यह कुल मिलाकर 27 होते हैं। भचक्र अर्थात राशि चक्र का कुल मान 360 अंश होता है। इसको 27 समान भागों में बांटने पर 13 अंश 20 कला का एक भाग प्राप्त होता है जो एक नक्षत्र का मान होता है। प्रत्येक नक्षत्र के चार चरण होते हैं इस प्रकार प्रत्येक चरण 3 अंश 20 कला का होता है। मेष राशि के प्रथम बिंदु से प्रारंभ करके 27 नक्षत्र और उनके स्वामी इस प्रकार हैं:

संख्या	नक्षत्र का नाम	स्वामी ग्रह
1	अश्वनी	केतु
2	भरणी	शुक्र
3	कृतिका	सूर्य
4	रोहिणी	चंद्रमा
5	मृगशिरा	मंगल
6	आर्द्रा	राहु
7	पुनर्वसु	बृहस्पति
8	पुष्य	शनि
9	अश्लेषा	बुध
10	मघा	केतु
11	पूर्वाफाल्गुनी	शुक्र
12	उत्तरा फाल्गुनी	सूर्य
13	हस्त	चंद्रमा
14	चित्रा	मंगल
15	स्वाति	राहु
16	विशाखा	बृहस्पति
17	अनुराधा	शनि
18	ज्येष्ठा	बुध
19	मूल	केतु
20	पूर्वाषाढ़ा	शुक्र
21	उत्तराषाढ़ा	सूर्य
22	श्रवण	चंद्रमा
23	धनिष्ठा	मंगल
24	शतभिषा	राहु
25	पूर्वाभाद्रपद	बृहस्पति
26	उत्तराभाद्रपद	शनि
27	रेवती	बुध

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These are the 27 nakshatras and their dasha lords:
1. Ashwini Ketu - Click here
2. Bharani Shukra (Venus) - Click here
3. Krittika Surya (Sun) - Click here
4. Rohini Chandra (Moon) - Click here
5. Mrigashira Mangal (Mars) - Click here
6. Ardra Rahu - Click here
7. Punarvasu Guru (Jupiter) - Click here
8. Pusya Shani (Saturn) - Click here
9. Ashlesha Budha (Mercury) - Click here
10. Magha Ketu - Click here
11. Poorva Phalguni Shukra (Venus) - Click here
12. Uttara Phalguni Surya (Sun) - Click here
13. Hasta Chandra (Moon) - Click here
14. Chitra Mangal (Mars) - Click here
15. Swati Rahu - Click here
16. Vishaka Guru (Jupiter) - Click here
17. Anuradha Shani (Saturn) - Click here
18. Jyestha Budha (Mercury) - Click here
19. Moola Ketu - Click here
20. Poorvashadha Shukra (Venus) - Click here
21. Uttarashadha Surya (Sun) - Click here
22. Shravana Chandra (Moon) - Click here
23. Dhanishta Mangal (Mars) - Click here
24. Shatabisha Rahu - Click here
25. Poorvabhadrapada Guru (Jupiter) - Click here
26. Uttarabhadrapada Shani (Saturn) - Click here
27. Revati Budha (Mercury) - Click here

Abhijit
The 28th Nakshatra, falling between Shravana and Dhanishta. Mainly used in Muhurta, and for calculating Ashtottari dashas.
Last 15 Ghati of 'Uttarashadha Nakshatra' and the first 4 Ghati of the Shravani Nakshatra i.e. 19 Ghatis in all, constitute the 'Abhijeet Nakshatra' 
(One Ghatika is equal to 24 minutes)  
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PANCHAKA NAKSHATRA: The following group of five Nakshatras are considered as having five defects (Panchakadosha). 
They are Dhanistha, Shatabhisha, Purvabhadrapada, Uttarabhadrapada and Revati.
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MOOLA NAKSHATRA: A child taking birth in this Nakshatra, which consists of Jyestha, Aashlesha, Revati, Mool, Magha and Ashwini Nakshatra are not considered as auspicious. 
Out of these six Nakshatras, which constitute Moola Nakshatra, Jyeshtha and Moola are called 'Gandant Moola' and Aashlesha is called as 'Sarpa Moola'.
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ADHOMUKHA NAKSHATRA: As the name of this Nakshatra implies, works like digging a well, or lying a foundation is considered as auspicious. This particular Nakshatra is itself constituted by Nakshatras. They are: Moola, Aashlesha, Vishakha, Kritika, Purvaphalguni, Purvashadha, Purvabhadrapada, Bharani and Magha
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DAGDHA NAKSHATRA: For commencement of any work, this Nakshatra is considered as inauspicious. Therefore, commencing any work in this Nakshatra is prohibited if the days on which, this Nakshatra falls are as under-
Sunday - Bharani
Monday - Chitra
Tuesday - Uttarashadha
Wednesday - Dhanishtha
Thursday - Uttaraphalguni
Friday - Jyeshtha
Saturday - Revati
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