Understanding > Astronomical calculations
Partial eclipse of the Sun on 13 July 2018
Presentation of the eclipse
Description of the eclipse
The eclipse is visible between Australia 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 75.2 sec.
Instant of the geocentric conjunction in right ascension : the 13 July 2018 at 3h 8m 59.5s UT.
Julian day : : 2458312.631244
| Characteristics | Values |
|---|---|
| Right ascension of the Sun : | 7h 29m 31.1s. |
| Declination of the Sun : | +21° 50' 30.7". |
| Right ascension of the Moon : | 7h 29m 10.9s. |
| Declination of the Moon : | +20° 27'46.6". |
| Equatorial parallax of the Sun : | 8.7". |
| Equatorial parallax of the Moon : | 1° 1' 20.3". |
| True semi-diameter of the Sun : | 15' 44.50. |
| True semi-diameter of the Moon : | 16' 42.8". |
General circumstances of the eclipse
Magnitude : 0.3367
| Circumstances | UT |
|---|---|
| Beginning of the general eclipse | the 13 at 1h 48m 17.5s |
| Maximum of the eclipse | the 13 at 3h 1m 2.4s |
| End of the general eclipse | the 13 at 4h 13m 43.1s |
General map of visibility
