This year on the Republic Day Tamil Nadu will witness a Partial Solar Eclipse (PSE), while Indonesia and Philippines will have an Annular Eclipse.
1. Why annular eclipse is formed?
The orbit of the moon is eliptical with one near the Earth(perigee) and other point away from the Earth(apogee).Near the perigee position the moon's apparent size will be equal to the apparent size of the Sun while in the apogee position it will be slightly less than the Sun's. On 26th Jan 2009, the moon is near the apogee and the apparent size of the moon is 9% less than that of the Sun. So during the centre of the eclipse the black moon's disk cannot hide the whole disc of the Sun leaving the outer rim of the Sun visible. This make an annular appearance.
2. Where the annular eclipse visbile on Jan26?
The trajectory of the eclipse will start at 11.30 in the atlantic region and passes through the south of the africa continent , the sumatra ilands and finally end in Philiophinnes covering 14,500km in 3hours 46 min. The most of the of the path lie in the sea area.
3. How the eclipse will appear in India?
In India eclipse will appear as a Partial Solar Eclipse and the size if the eclipse will gradually decrease from Kanyakumari. Thus the PSE will be 21.5% in Kanyakumari and 6% in Calcutta. In the northmost region there wont be any ecplise at all.
4. When will the eclipse start in our district?
In kancheepuram district it will starts around 3.26pm and ends around 4.04pm. The maximum will occur around 3.18pm.
The TNSF and NESCO has jointly organised a programme to view the PSE through telescope in the NESCO open theatre ground on this occation from 2.30pm to 4pm. All are welcome.
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