Woltjer, Jan (astronomer)

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Woltjer, Jan (astronomer) Gender: M
born on 3 August 1891 at 14:30 (= 2:30 PM )
Place Amsterdam, Netherlands, 52n22, 4e54
Timezone LMT m4e54 (is local mean time)
Data source
BC/BR in hand
Rodden Rating AA
Collector: Astrodienst
Astrology data s_su.18.gif s_leocol.18.gif 10°54' s_mo.18.gif s_cancol.18.gif 28°08 Asc.s_scocol.18.gif 25°06'


Dutch astronomer.

Woltjer was the youngest son of the classical scholar Jan Woltjer. On 13 December 1916 he married Hillegonda de Vries in Groningen. He worked and taught at Leiden University, where Gerard P. Kuiper was one of his students. He was the father of the astronomer Lodewijk Woltjer (26 April 1930), who was the director general of the European Southern Observatory from 1975 to 1987.

The crater Woltjer on the Moon and the asteroid 1795 Woltjer are both named after him.

Link to Wikipedia


  • child->parent relationship with Woltjer, Jan (born 4 February 1849)


  • Relationship : Marriage 13 December 1916 in Groningen (Hillegonda de Vries)
    chart Placidus Equal_H.
  • Family : Adopted a child 26 April 1930 in Noordwijk (Lodewijk Woltjer)
    chart Placidus Equal_H.

Source Notes

Svi retrieved the BC: 3 August 1891 14h30 Amsterdam.


  • Vocation : Education : Researcher (professor of astronomy)
  • Vocation : Science : Astronomy