PSR B1257+12
Sign in to saveAlso known as PSR 1257+12, Lich, PSR1257+12
pulsar located around 2300 light-years from the Sun in Virgo constellation
Key facts
- Constellation
- Virgo
- Right ascension
- 13 00 03.1075
- Declination
- +12 ° 40 ′ 55.155 ″
- Evolutionary stage
- Pulsar
via Wikipedia infobox
Wikidata facts
- Instance of
- pulsar
- Named after
- lich
- Constellation
- Virgo
- Child body
- PSR B1257+12 c
- Distance from Earth
- 710
- Mass
- 0.012
- Orbital period
- 98.2114
- Image
- Artist's concept of PSR B1257+12 system.jpg
Show 21 more facts
- time of discovery or invention
- 1990-01-01
- catalog code
- PSR J1300+1240
- discoverer or inventor
- Aleksander Wolszczan
- site of astronomical discovery
- Arecibo Observatory
- right ascension
- 195.01294792
- declination
- 12.68198750
- parallax
- 1.41
- epoch
- J2000.0
- name
- Lich
- Commons category
- PSR B1257+12
- different from
- Lich
- named by
- International Astronomical Union
- age estimated by a dating method
- 1
- right ascension component of proper motion
- 46.44
- declination component of proper motion
- -84.87
- spectral class
- PSR
- orbital inclination
- 47
- orbital eccentricity
- 0.0252
- semi-major axis of an orbit
- 0.46
- time of periapsis
- 2449765.5
- argument of periapsis
- 108.3
Sources (2)
via Wikidata · CC0
Article · 中文
PSR B1257+12，前稱為PSR 1257+12，又稱為PSR J1300+1240，又名「巫妖星」（Lich），是一顆位於室女座的脈衝星，距離太陽大約2,300光年。 這顆脈衝星受到注意的地方，在於它擁有一行星系，現時已知有三顆行星圍繞其運行，這些行星也是首批被發現的太陽系外行星。 這顆脈衝星最先於1990年由波蘭天文學家亞歷山大·沃爾茲森（Aleksander Wolszczan），於1990年以位於波多黎各阿雷西博的射電望遠鏡發現的。它屬於毫秒脈衝星，為中子星的一種，自轉週期為6.22毫秒，但他卻發現其脈衝信號出現不尋常，遂對它作更深入的觀測。
Abstract from DBpedia / Wikipedia · CC BY-SA