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1881 November the 7th and the 8th



All the instants are given in Universal Time, for the present date the value of the difference between the Terrestrial Time TT and the Universal Time UT is taken as -5.10s
Longitudes are counted positively towards West and negatively towards East.

Parameters at the instant of conjunction in longitude


Conjunction on 1881/11/8 at 0h 51m 29.62s.
Geocentric longitude of Mercury 225° 47' 22.202".
Geocentric latitude of Mercury -0° 3' 54.05".
Geocentric longitude of the Sun 225° 47' 22.202".
Geocentric latitude of the Sun +0° 0' 0.27".
Equatorial parallax of the Sun 8.88".
Equatorial parallax of Mercury 13.02".
True semi-diameter of the Sun 16' 9.1".
True semi-diameter of Mercury 4.98".


General phases

Phases Date and instant
in UTC
Position of the contacts Mercury being in the Zenith in
Longitude Latitude Longitude Latitude
Ingress, exterior contact the 7 th at 22h 16m 14.2s + 55° 43.5' -37° 27.1' +157° 52.3' -16° 42.9'
Ingress, interior contact the 7 th at 22h 17m 58.5s + 56° 5.4' -37° 35.0' +158° 18.6' -16° 42.9'
Least angular distance the 8 th at 0h 57m 16.7s - 40° 29.9' -60° 19.4' -161° 37.2' -16° 38.1'
Egress, interior contact the 8 th at 3h 36m 42.5s - 35° 39.7' +10° 46.2' -121° 31.1' -16° 33.4'
Egress, exterior contact the 8 th at 3h 38m 26.8s - 35° 16.5' +10° 54.4' -121° 4.8' -16° 33.3'

Durations of the general phases

  • Duration of the general transit : 5h 22m 12.56s.
  • Duration of the transit inside the shadow : 5h 18m 43.99s.

Parameters of the shadow and penumbra cones and minimum elongation

  • Semi-diameter of the shadow cone : 233.16 R
  • Geocentric distance of the edge of the shadow : 177.11 R
  • Geocentric distance of the edge of the penumbra : 179.52 R
  • Semi-diameter of the cone of penombra : 235.57 R
  • Least topocentric distance : 3' 47.679"

Geocentric phases

Geocentric phases Date and instant in UTC Mercury being in the Zenith in Position Angle P
LongitudeLatitude
Ingress, exterior contact the 7 th at 22h 16m 57.5s +158° 3.2' -16° 42.9' +129° 10.1'
Ingress, interior contact the 7 th at 22h 18m 41.8s +158° 29.5' -16° 42.8' +129° 18.7'
Least angular distance the 8 th at 0h 57m 15.8s -161° 37.4' -16° 38.1' ---
Egress, interior contact the 8 th at 3h 35m 59.2s -121° 42.0' -16° 33.4' +281° 7.5'
Egress, exterior contact the 8 th at 3h 37m 43.5s -121° 15.7' -16° 33.3' +281° 16.0'

Durations of the geocentric phases

  • Duration of the general transit : 5h 20m 46.03s.
  • Duration of the transit of the shadow : 5h 17m 17.40s.
  • Least geocentric angular distance : 3' 51.804"


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URL: http://www.imcce.fr/ephem/passage_eng/html_passage/MercureP1881.html
Last update : March 22nd, 2004.