Understanding > Astronomical calculations
Annular eclipse of the Sun on 9/10 May 2013
Presentation of the eclipse
Description of the eclipse
The central line starts in Australia and ends in the South Pacific. The maximum duration of the centrality is 6m 3.4 s.
Elements of the eclipse
Ephemeris used to calculate positions of the Sun and Earth are the ephemeris Newcomb/ILE. For this calculation the value of TE-TU was exceptionally forced at 69.9 sec.
Instant of the geocentric conjunction in right ascension : le 10 mai 2013 at 0h 19m 40.6s UT.
Julian day : : 2456422.513664
| Characteristics | Values |
|---|---|
| Right ascension of the Sun : | 3h 8m 17.4s. |
| Declination of the Sun : | +17° 36' 34.3". |
| Right ascension of the Moon : | 3h 8m 28.1s. |
| Declination of the Moon : | +17° 22' 6.0". |
| Equatorial parallax of the Sun : | 8.7". |
| Equatorial parallax of the Moon : | 54' 40.4". |
| True semi-diameter of the Sun : | 15' 50.4". |
| True semi-diameter of the Moon : | 14' 53.,8". |
General circumstances of the eclipse
Magnitude : 0.9544
| Circumstances | UT | Longitude | Latitude |
|---|---|---|---|
| Beginning of the general eclipse | the 9 at 21h 25m 10.0s | ||
| Maximum of the eclipse | the 10 at 0h 25m 10.0s | 175 °28.3'E | +2° 12.8' |
| End of the general eclipse | the 10 at 3h 25m 22.6s |
General map
