Understanding > Astronomical calculations
Partial eclipse of the Sun on 1 July 2011
Presentation of the eclipse
Description of the eclipse
The eclipse is visible between Africa and Antarctica.
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 68.1 sec.
Instant of the geocentric conjunction in right ascension : the 1 July 2011 at 9h 5m 32.9s UT.
Julian day : : 2455743.878852
| Characteristics | Values |
|---|---|
| Right ascension of the Sun : | 6h 40m 1.7s. |
| Declination of the Sun : | +23° 07' 6.0". |
| Right ascension of the Moon : | 6h 39m 2.0s. |
| Declination of the Moon : | +21° 42'6.0". |
| Equatorial parallax of the Sun : | 8.6". |
| Equatorial parallax of the Moon : | 57' 24.6". |
| True semi-diameter of the Sun : | 15' 43.9". |
| True semi-diameter of the Moon : | 15' 38.6". |
General circumstances of the eclipse
Magnitude : 0.0966
| Circumstances | UT |
| Beginning of the general eclipse | the 1 at 7h 53m 47.3s |
| Maximum of the eclipse | the 1 at 8h 38m 24.3s |
| End of the general eclipse | the 1 at 9h 22m 45.0s |
General map
