# Jérôme Lalande

> An 18th-century astronomer who pinned down one of the solar system's most elusive measurements: how far we actually are from the Sun.

*French astronomer (*1732 – †1807)*

**Canonical URL:** https://fame.am/person/jerome-lalande

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** France
- **Born:** 1732-07-11
- **Died:** 1807-04-04
- **Status:** deceased
- **Gender:** male

## Bio

Joseph Jérôme Lefrançois de Lalande was born in France on 11 July 1732. He turned his attention to the stars and joined the freemasons, but his lasting mark came in 1769 when he used observations of Venus crossing the face of the Sun to calculate a precise value for the astronomical unit — the Earth-to-Sun distance that anchors our sense of cosmic scale. The work required exacting measurement and gave astronomers a yardstick for the solar system. He continued writing and observing until his death on 4 April 1807.

## Fame
- **Popularity score:** 56.6 / 100
- **Momentum:** 10.0 / 100  (trend: RISING)
- **Historical depth:** 22.9 / 100
- **Now attention:** 0.0 / 100
- **Source confidence:** 60.0 / 100
- **Profile completeness:** 70.0 / 100

## Topics
#Scientists, #Scientist, #Astronomy, #Mathematics, #Literature, #France, #Europe, #Early Modern Era

## Sources
- [Wikidata](https://www.wikidata.org/wiki/Q168419)
- [Wikipedia](https://en.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [Pantheon 2.0](https://pantheon.world/profile/person/J%C3%A9r%C3%B4me%20Lalande)
- [ژروم لالاند](https://azb.wikipedia.org/wiki/%DA%98%D8%B1%D9%88%D9%85_%D9%84%D8%A7%D9%84%D8%A7%D9%86%D8%AF)
- [Жэром Лаланд](https://be.wikipedia.org/wiki/%D0%96%D1%8D%D1%80%D0%BE%D0%BC_%D0%9B%D0%B0%D0%BB%D0%B0%D0%BD%D0%B4)
- [जेरोमी लेलेंड](https://bh.wikipedia.org/wiki/%E0%A4%9C%E0%A5%87%E0%A4%B0%E0%A5%8B%E0%A4%AE%E0%A5%80_%E0%A4%B2%E0%A5%87%E0%A4%B2%E0%A5%87%E0%A4%82%E0%A4%A1)
- [Jérôme Lalande](https://br.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [Joseph Jêrôme Lalande](https://ca.wikipedia.org/wiki/Joseph_J%C3%AAr%C3%B4me_Lalande)
- [Jérôme Lalande](https://cs.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [Jérôme Lalande](https://da.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [Jérôme Lalande](https://de.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [Ζερόμ Λαλάντ](https://el.wikipedia.org/wiki/%CE%96%CE%B5%CF%81%CF%8C%CE%BC_%CE%9B%CE%B1%CE%BB%CE%AC%CE%BD%CF%84)
- [Jérôme Lalande](https://eo.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [Joseph Lalande](https://es.wikipedia.org/wiki/Joseph_Lalande)
- [Jérôme Lalande](https://eu.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [ژروم لالاند](https://fa.wikipedia.org/wiki/%DA%98%D8%B1%D9%88%D9%85_%D9%84%D8%A7%D9%84%D8%A7%D9%86%D8%AF)
- [Jérôme Lalande](https://fi.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [Joseph Jérôme Lefrançois de Lalande](https://fr.wikipedia.org/wiki/Joseph_J%C3%A9r%C3%B4me_Lefran%C3%A7ois_de_Lalande)
- [ז'רום לאלנד](https://he.wikipedia.org/wiki/%D7%96'%D7%A8%D7%95%D7%9D_%D7%9C%D7%90%D7%9C%D7%A0%D7%93)
- [Jérôme Lalande](https://hr.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [Joseph Jérôme Lefrançais de Lalande](https://hu.wikipedia.org/wiki/Joseph_J%C3%A9r%C3%B4me_Lefran%C3%A7ais_de_Lalande)
- [Jérôme Lalande](https://id.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [Jérôme Lalande](https://it.wikipedia.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [ジェローム・ラランド](https://ja.wikipedia.org/wiki/%E3%82%B8%E3%82%A7%E3%83%AD%E3%83%BC%E3%83%A0%E3%83%BB%E3%83%A9%E3%83%A9%E3%83%B3%E3%83%89)
- [제롬 랄랑드](https://ko.wikipedia.org/wiki/%EC%A0%9C%EB%A1%AC_%EB%9E%84%EB%9E%91%EB%93%9C)
- [Wikiquote](https://it.wikiquote.org/wiki/J%C3%A9r%C3%B4me_Lalande)
- [جيروم لالاند](https://ar.wikipedia.org/wiki/%D8%AC%D9%8A%D8%B1%D9%88%D9%85_%D9%84%D8%A7%D9%84%D8%A7%D9%86%D8%AF)
- [جيروم لالاند](https://arz.wikipedia.org/wiki/%D8%AC%D9%8A%D8%B1%D9%88%D9%85_%D9%84%D8%A7%D9%84%D8%A7%D9%86%D8%AF)

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