Van Maanen 2

Quick Facts: Who was Van Maanen 2?

Subject:

Van Maanen 2

Known for:

Closest known solitary white dwarf to the Solar System, discovered in 1917.

Verified Source:

2Day Chrono-Wiki & Primary Historical Archives

Origins & Early Life

Van Maanen 2, or van Maanen's Star, is the closest-known solitary white dwarf to the Solar System. It is a dense, compact stellar remnant no longer generating energy through fusion and has equivalent to about 68% of the Sun's mass but only 1% of its radius. At a distance of 14.1 light-years it is the third closest of its type of star after Sirius B and Procyon B, in that order.

Career & Major Achievements

Discovered in 1917 by Dutch-American astronomer Adriaan van Maanen, Van Maanen 2 was the third white dwarf identified, after 40 Eridani B and Sirius B, and the first solitary example. While searching for a companion to the large proper-motion star Lalande 1299, in 1917 Dutch–American astronomer Adriaan van Maanen discovered this star with an even larger proper motion a few arcminutes to the northeast.

Enduring Legacy & Impact

He estimated the annual proper motion of the latter as 3 arcseconds. This star had been captured on a plate taken November 11, 1896 for the Carte du Ciel Catalog of Toulouse and it showed an apparent magnitude of 12.3.

Chronological Milestones & Life Events

1. 1299: 1299 Milestone — While searching for a companion to the large proper-motion star Lalande 1299, in 1917 Dutch–American astronomer Adriaan van Maanen discovered this star with an even larger proper motion a few arcminutes to the northeast.
2. 1896: 1896 Milestone — This star had been captured on a plate taken November 11, 1896 for the Carte du Ciel Catalog of Toulouse and it showed an apparent magnitude of 12.
3. 1917: 1917 Milestone — Discovered in 1917 by Dutch-American astronomer Adriaan van Maanen, Van Maanen 2 was the third white dwarf identified, after 40 Eridani B and Sirius B, and the first solitary example.

Historical Fact-Check Quiz: Van Maanen 2

True or False: “Van Maanen 2 is classified as a stellar remnant that no longer generates energy through nuclear fusion.”

Answer (TRUE ⭕): White dwarfs are the dense, cooling cores of stars that have exhausted their fuel, meaning they are no longer undergoing active fusion processes.

Contemporary Figures & Related Historical Timelines

• Abdullah al-Sallal — Historical peer (Born in 1917) (1917): Yemeni military officer and revolutionary who led the North Yemeni Revolution of 1962.
• Adolf von Baeyer — Historical peer (Died in 1917) (1917): Pioneering German chemist known for indigo synthesis and IUPAC nomenclature.
• Franco of Cologne — Historical peer (Died in 1299) (1299): Pioneering music theorist who established note duration via written notation.
• A. C. Bhaktivedanta Swami Prabhupada — Historical peer (Born in 1896) (1896): Pioneering global spread of Krishna consciousness teachings and the Hare Krishna mantra.
• Alfonso Caso — Historical peer (Born in 1896) (1896): Pioneering Mexican archaeologist renowned for pre-Columbian studies.

Frequently Asked Questions about Van Maanen 2