- Burlington is a city in Skagit County, Washington, United States. Its population was recorded as 9,152 in the 2020 census. Burlington is located approximately halfway between Seattle and Vancouver, B.C. The city is included in the Mount Vernon–Anacortes, Washington Metropolitan Statistical Area.
- A-type star (Wikipedia)
A-type stars are among the more common naked eye stars, and are white or bluish-white. They have strong hydrogen lines, at a maximum by A0, and also lines of ionized metals (Fe II, Mg II, Si II) at a maximum at A5. The presence of Ca II lines is notably strengthening by this point. About 1 in 160 (0.625%) of the main-sequence stars in the solar neighborhood are A-type stars, which includes 9 stars within 15 parsecs.