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| − | raxu is current a [[Division C]] competitor at [[Scarsdale High School]] and Captain of the team in [[2017]] and [[2018]]. He also competed in Division B for the [[Scarsdale Middle School]] team in [[2014]]. | + | raxu (Richard Xu) was a [[Division C]] competitor at [[Scarsdale High School]] and Captain of the team in [[2017]] and [[2018]]. He also competed in Division B for the [[Scarsdale Middle School]] team in [[2014]]. |
| | | | |
| − | --Sandbox--
| + | ==Sandbox== |
| − | ===Deep Sky Objects=== | |
| − | | |
| − | These are the DSOs (Deep Sky Objects) from the [[2017]] list (not in alphabetical order):
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| − | | |
| − | {|class="wikitable"
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| − | |+2017 Stars
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| − | ! rowspan="2" | Name
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| − | ! rowspan="2" | Images
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| − | ! rowspan="2" | Object Type
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| − | ! rowspan="2" | Constellation
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| − | ! rowspan="2" colspan="2" | Apparent Magnitude
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| − | ! rowspan="2" | Distance
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| − | ! colspan="2" | Coordinates
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| − | ! rowspan="2" | External Links
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| − | |-
| |
| − | ! Right Ascension
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| − | ! Declination
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| − | |-
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| − | !rowspan="2" | NGC 7293 (Helix Nebula)
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| − | |rowspan="2" | [[File:HelixMultiFreq.png|200px]]
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| − | |Planetary Nebula
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| − | |Aquarius
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| − | |7.6
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| − | |714 ly
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| − | |'''22h 29m 39s'''
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| − | |'''-20° 50′ 14″ '''
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| − | |[https://apod.nasa.gov/apod/ap141012.html] [https://apod.nasa.gov/apod/ap160920.html] [https://apod.nasa.gov/apod/ap140110.html] [https://www.nasa.gov/multimedia/imagegallery/image_feature_2368.html]
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| − | |-
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| − | | colspan="8" | A planetary nebula that will become a white dwarf. Helix nebula is not a simple helix, but has two nearly perpendicular disks, as well as arcs, shocks, and features not well understood.
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| − | |-
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| − | !rowspan="2" | NGC 3603
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| − | |rowspan="2" | [[File:3603Collage.jpg|200px]]
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| − | |HII Region with an open cluster
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| − | |Carina
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| − | |9.1
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| − | |6900pc
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| − | |'''11h 15m 23s'''
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| − | |'''-61° 15′ 00″ '''
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| − | |
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| − | |-
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| − | | colspan="8" | The nebula was first discovered by Sir John Herschel in 1834.
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| − | |-
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| − | !rowspan="2" | NGC 3372 (Carina Nebula)
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| − | |rowspan="2" | [[File:CarinaCombined.jpg|200px]]
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| − | |K0III
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| − | |Boötes
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| − | | -0.05
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| − | | -0.30
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| − | |36.7 ly
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| − | |'''14h 15m 40s'''
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| − | |'''+19° 10′ 56″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Red giant star.
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| − | |-
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| − | !rowspan="2" | Cassiopeia A (Cas A)
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| − | |rowspan="2" | [[File:CasACollage.jpg|200px]]
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| − | |A1Vm/DA2
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| − | |Canis Major
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| − | | -1.46
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| − | |1.42
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| − | |8.60 ly
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| − | |'''06h 45m 09s'''
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| − | |'''−16° 43′ 06″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Brightest star in the night sky. A binary system with Sirius A, a main sequence star, and Sirius B, a white dwarf with Apparent Magnitude 8.44 and Absolute Magnitude 11.18. The name "Sirius" is derived from the Ancient Greek "Seirios", meaning "glowing" or "scorcher".
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| − | |-
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| − | !rowspan="2" | Tycho's SNR
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| − | |rowspan="2" | [[File:TychoCollage.jpg|200px]]
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| − | |F5IV-V
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| − | |Canis Minor
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| − | |0.34
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| − | |2.66
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| − | |11.5 ly
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| − | |'''07h 39m 18s'''
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| − | |'''+05° 13′30″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Main sequence star with faint white-dwarf companion.
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| − | |-
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| − | !rowspan="2" | Cygnus X-1
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| − | |rowspan="2" | [[File:CygX1Collage.jpg|200px]]
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| − | |A2Ia
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| − | |Cygnus
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| − | |1.25
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| − | | -8.38
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| − | |802 ± 66 pc
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| − | |'''20h 41m 25.9s'''
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| − | |'''+45° 16′ 49″ '''
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| − | |
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| − | |-
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| − | | colspan="8" | Cygnus X-1 is a source of x-rays in the constellation '''Cygnus'''. It is the first widely accepted black hole to be an x-ray source such as itself. It was discovered in 1964 and is located about 6,070 light years from the sun. Cygnus X-1 is a member of a high-mass X-ray binary system. It is about 5 million years old and rotates once every 5.6 days.
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| − | |-
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| − | !rowspan="2" | 30 Doradus
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| − | |rowspan="4" | [[File:CastorPollux1.jpg|200px]]
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| − | |
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| − | |Gemini
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| − | |
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| − | |
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| − | |51 ly
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| − | |'''07h 34m 36s'''
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| − | |'''+31° 53′ 18″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Located in the constellation of '''Dorado''', 30 Doradus is an '''H II region''' also known as the Tarantula Nebula. It is found in the Large Magellanic Cloud (LMC) and has a magnitude of 8.
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| − | |-
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| − | !rowspan="2" | Large Megallanic Cloud (LMC)
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| − | |K0III
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| − | |Gemini
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| − | |1.14
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| − | |1.08
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| − | |33.8 ly
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| − | |'''07h 45m 19s'''
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| − | |'''+28° 01′ 34″ '''
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| − | |
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| − | |-
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| − | | colspan="8" | Giant star.
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| − | |-
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| − | !rowspan="2" | Geminga
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| − | |rowspan="2" | [[File: GemingaCollage.jpg|200px]]
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| − | |B8 IVn
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| − | |Leo
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| − | |1.40
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| − | | -0.52
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| − | |79.3 ly
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| − | |'''10h 08m 22s'''
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| − | |'''+11° 58′ 02″'''
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| − | |[http://chandra.harvard.edu/photo/2017/geminga/]
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| − | |-
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| − | | colspan="8" | Four star system. Values above are only for Regulus A.
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| − | |-
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| − | !rowspan="2" | NGC 602
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| − | |rowspan="2" | [[File: 602Collage.jpg|200px]]
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| − | |A0Va
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| − | |Lyra
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| − | | -0.02-0.07 (0.026)
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| − | | +0.582
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| − | |25 ly
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| − | |'''18h 36m 56s'''
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| − | |'''+38° 47′ 01″'''
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| − | |[http://chandra.harvard.edu/photo/2013/ngc602/] [https://apod.nasa.gov/apod/ap150307.html]
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| − | |-
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| − | | colspan="8" | Suspected Delta Scuti Variable. Northern pole star around 12,000 BC.
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| − | |-
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| − | !rowspan="2" | M57 (Ring Nebula)
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| − | |rowspan="2" | [[File: ZetaOph1.jpg|200px]]
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| − | |O9.5 V
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| − | |Ophiuchus
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| − | |2.57
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| − | | -4.2
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| − | |366 ly
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| − | |'''16h 37m 10s'''
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| − | |'''–10° 34′ 02″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Blue main-sequence star at the start of its life.
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| − | |-
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| − | !rowspan="2" | Kepler's SNR
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| − | |rowspan="4" | [[File:Betelgeuse1.jpg|200px]]
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| − | |M1-M2 Ia-ab
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| − | |Orion
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| − | |
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| − | | -5.85
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| − | |643 ± 146 ly
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| − | |'''05h 55m 10s'''
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| − | |'''+07° 24′ 25″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Semiregular Variable Star.
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| − | |-
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| − | !rowspan="2" | M42 (Orion Nebula)
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| − | |B8 Ia
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| − | |Orion
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| − | |0.13
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| − | | -7.84
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| − | |860 ± 80 ly
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| − | |'''05h 14m 32s'''
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| − | |'''−08° 12′ 06″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Blue Supergiant with Blue main-sequence companion.
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| − | |-
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| − | !rowspan="2" | Segittarius A*
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| − | |rowspan="2" | [[File:Algol1.jpg|200px]]
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| − | |B8V/K0IV
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| − | |Perseus
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| − | |
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| − | | -0.07
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| − | |90 ± 3 ly
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| − | |'''03h 08m 10s'''
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| − | |'''+40° 57′ 20.3280″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Multiple star system with a pair of eclipsing Variable stars. Counter-intuitively, the lower-mass star is leaving the main-sequence earlier.
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| − | |-
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| − | !rowspan="2" | M17 (Omega Nebula)
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| − | |rowspan="2" | [[File:Antares1.jpg|200px]]
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| − | |M1.5Iab+B2.5V
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| − | |Scorpius
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| − | |0.6-1.6
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| − | | -5.28
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| − | |550 ly
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| − | |'''16h 29m 24.5s'''
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| − | |'''−26° 25′ 55″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Red Supergiant with Orange main-sequence star companion.
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| − | |-
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| − | !rowspan="2" | M8 (Lagoon Nebula)
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| − | |rowspan="2" | [[File:Aldebaran1.jpg|200px]]
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| − | |K5III
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| − | |Taurus
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| − | | -0.86
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| − | | -0.64
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| − | |65ly
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| − | |'''04h 35m 55s'''
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| − | |'''+16° 30′ 33.5″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Orange Giant Star.
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| − | |-
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| − | !rowspan="2" | M16 (Eagle Nebula)
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| − | |rowspan="2" | [[File:MizarAlcor1.jpg|200px]]
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| − | |A2Vp
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| − | |Ursa Major
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| − | |2.27
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| − | |0.33
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| − | |86 ± 4 ly
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| − | |'''13h 23m 55.5s'''
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| − | |'''+54° 55′ 31″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Visual double with Alcor.
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| − | |-
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| − | !rowspan="2" | M1 (Crab Nebula)
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| − | |rowspan="2" | [[File:CrabCollage.jpg|200px]]
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| − | |A5Vn
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| − | |Ursa Major
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| − | |3.99
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| − | | 2.00
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| − | |81.6 ly
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| − | |'''13h 25m 13.5s'''
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| − | |'''+54° 59′ 17″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Visual double with Mizar.
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| − | |-
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| − | !rowspan="2" | T Tauri
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| − | |rowspan="2" | [[File:Polaris1.jpg|200px]]
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| − | |F7Ib/F6V
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| − | |Ursa Minor
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| − | |1.98
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| − | | -3.6
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| − | |323-433 ly
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| − | |'''02h 31m 49.1s '''
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| − | |'''+89° 15′ 50.8″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Current Northern pole star; Multiple Star system with Yellow Supergiant orbiting a smaller companion; Cepheid Variable star.
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| − | |-
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| − | !rowspan="2" | Small Magellanic Cloud (SMC)
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| − | |rowspan="2" | [[File:Spica1.jpg|200px]]
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| − | |B1 III-IV/B2 V
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| − | |Virgo
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| − | |0.97
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| − | | -3.55
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| − | |250±10 ly
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| − | |'''13h 25m 11.6s'''
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| − | |'''−11° 09′ 40.8″'''
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| − | |
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| − | |-
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| − | | colspan="8" | Binary star system with a blue giant (beta cepheid variable) and a blue main-sequence star; a spectroscopic binary and rotating ellipsoidal variable; 22400 Kelvin.
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| − | |-
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| − | |}
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