4 Aquarii: Difference between revisions

4 Aquarii
	; 4 Aquarii
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquarius
Right ascension	20h 51m 25.7483s
Declination	-05° 37′ 35.878″
Apparent magnitude (V)	6.07
Characteristics
Spectral type	F5V+
U−B color index	0.03
B−V color index	0.46
Variable type	Variable star
Astrometry
Radial velocity (Rv)	-24.6 km/s
Proper motion (μ)	RA: 95.77 mas/yr ; Dec.: 1.25 mas/yr
Parallax (π)	16.97 ± 1.26 mas
Distance	190 ± 10 ly ; (59 ± 4 pc)
Absolute magnitude (MV)	6.48
Details
Mass	1.7 M☉
Radius	1.4 R☉
Luminosity	6 L☉
Temperature	6,000–7,500 K
Metallicity	?
Rotation	?
Age	? years
Orbit
Companion	4 Aquarii B
Period (P)	187 yr
Semi-major axis (a)	0.855″
Eccentricity (e)	0.47
Inclination (i)	68.3°
Longitude of the node (Ω)	173.9°
Periastron epoch (T)	1896.2
Orbit
Companion	4 Aquarii C
Semi-major axis (a)	72.7″
Inclination (i)	313°
Orbit
Companion	4 Aquarii D
Semi-major axis (a)	131.2″
Inclination (i)	329°
Other designations
	ZI 1956, GC 29078, 2MASS J20512575-0537355, UBV 18044, GCRV 13083, NSV 13350, uvby98 100198571 AB, STF 2729AB, PLX 4983, YZ 95 7466, ADS 14360 AB, GSC 05190-02008, PPM 204535, YZ 0 4423, BD-06° 5604, HD 198571, SAO 144877, WDS J2051.4-0538, CCDM J20514-0537AB, HIC 102945, WDS J20513-0537AB, CSI-06 5604 1, HIP 102945, TD1 27348, WDS J20514-0538, CSV 102036, HR 7982, TYC 5190-2008-1.
Database references
SIMBAD	data
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue,; CCDM (2002),; Bright Star Catalogue (5th rev. ed.)

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Revision as of 07:22, 16 December 2009

4 Aquarii or CCDM J20514-0537 AB is a variable star with a spectral type of F5V. It is a white main-sequence star with strengthened H and K lines of Ca II and has neutral metal ionizations. 4 Aquarii is approximatly 190 light-years from Earth with an absolute magnitude of 6.48.

4 Aquarii A has three companion stars, 4 Aquarii B and 4 Aquarii C and 4 Aquarii D, which makes it a quadruple star system. 4 Aquarii B is .855" (degree seconds) from 4 Aquarii and revolves around every 187 years. The distances between any of the stars in the system would allow possible formation of planetary systems about any of the stars, but would be of extremely close proximity to the mother star due to the gravitational pull of the other stars.

Components

NAME	Right ascension	Declination	Apparent magnitude (V)	Spectral type	Database references
CCDM J20514-0537 C (BD-06 5604C)	20^h 51^m 22.0^s	-05° 36' 44	12.9		Simbad
CCDM J20514-0537 D (BD-06 5604D)	20^h 51^m 31.9^s	-05° 38' 58	9.4		Simbad

References

This variable star–related article is a stub. You can help Wikipedia by expanding it.

Template:Binary-star-stub

@@ Line 56: / Line 56: @@
   periastron= }}
 {{Starbox catalog |
-  names=SV* ZI 1956, [[Boss General Catalogue|GC]] 29078, [[2MASS]] J20512575-0537355, [[Photoelectric Catalogue|UBV]] 18044, [[GCRV]] 13083, [[New Catalogue of Suspected Variable Stars|NSV]] 13350, [[uvby98]] 100198571 AB, [[Friedrich Georg Wilhelm von Struve|STF]] 2729AB, [[General Catalogue of Trigonometric Stellar Parallaxes|PLX]] 4983, [[Yale Observatory Zone Catalog|YZ]] 95 7466, [[Aitken Double Star Catalogue|ADS]] 14360 AB, [[Guide Star Catalog|GSC]] 05190-02008, [[PPM Star Catalogue|PPM]] 204535, [[Yale Observatory Zone Catalog|YZ]] 0 4423, [[Durchmusterung|BD]]-06° 5604, [[Henry Draper Catalogue|HD]] 198571, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]] 144877, [[Washington Double Star Catalog|WDS]] J2051.4-0538, [[Catalog of Components of Double and Multiple Stars|CCDM]] J20514-0537AB, [[Hipparcos Input Catalogue|HIC]] 102945, [[Washington Double Star Catalog|WDS]] J20513-0537AB, [[Catalog of Stellar Identification|CSI]]-06 5604 1, [[Hipparcos Catalogue|HIP]] 102945, [[TD1 Catalog of Stellar Ultraviolet Fluxes|TD1]] 27348, [[Washington Double Star Catalog|WDS]] J20514-0538, [[Catalog of Suspected Variables|CSV]] 102036, [[Bright Star Catalogue|HR]] 7982, [[Tycho Catalogue|TYC]] 5190-2008-1. }}
+  names=ZI 1956, [[Boss General Catalogue|GC]] 29078, [[2MASS]] J20512575-0537355, [[Photoelectric Catalogue|UBV]] 18044, [[GCRV]] 13083, [[New Catalogue of Suspected Variable Stars|NSV]] 13350, [[uvby98]] 100198571 AB, [[Friedrich Georg Wilhelm von Struve|STF]] 2729AB, [[General Catalogue of Trigonometric Stellar Parallaxes|PLX]] 4983, [[Yale Observatory Zone Catalog|YZ]] 95 7466, [[Aitken Double Star Catalogue|ADS]] 14360 AB, [[Guide Star Catalog|GSC]] 05190-02008, [[PPM Star Catalogue|PPM]] 204535, [[Yale Observatory Zone Catalog|YZ]] 0 4423, [[Durchmusterung|BD]]-06° 5604, [[Henry Draper Catalogue|HD]] 198571, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]] 144877, [[Washington Double Star Catalog|WDS]] J2051.4-0538, [[Catalog of Components of Double and Multiple Stars|CCDM]] J20514-0537AB, [[Hipparcos Input Catalogue|HIC]] 102945, [[Washington Double Star Catalog|WDS]] J20513-0537AB, [[Catalog of Stellar Identification|CSI]]-06 5604 1, [[Hipparcos Catalogue|HIP]] 102945, [[TD1 Catalog of Stellar Ultraviolet Fluxes|TD1]] 27348, [[Washington Double Star Catalog|WDS]] J20514-0538, [[Catalog of Suspected Variables|CSV]] 102036, [[Bright Star Catalogue|HR]] 7982, [[Tycho Catalogue|TYC]] 5190-2008-1. }}
 {{Starbox reference |
   Simbad=HD+198571 }}
@@ Line 63: / Line 63: @@
 {{starbox sources|HIP|CCDM|HR}}
 {{Starbox end}}
-'''4 Aquarii''' or '''CCDM J20514-0537 AB''' is a [[Variable Star]] with a [[spectral type]] of F5V. It is a white main-sequence star with strengthened ''H'' and ''K'' lines of [[Ca]] II and has neutral metal ionizations. 4 Aquarii is approximatly 190 [[light-years]] from [[Earth]] with an [[absolute magnitude]] of 6.48.
+'''4 Aquarii''' or '''CCDM J20514-0537 AB''' is a [[variable star]] with a [[spectral type]] of F5V. It is a white main-sequence star with strengthened ''H'' and ''K'' lines of [[Ca]] II and has neutral metal ionizations. 4 Aquarii is approximatly 190 [[light-years]] from [[Earth]] with an [[absolute magnitude]] of 6.48.
 Aquarii A has three companion stars, '''4 Aquarii B''' and '''4 Aquarii C''' and '''4 Aquarii D''', which makes it a [[quadruple star system]]. 4 Aquarii B is .855" (degree seconds) from 4 Aquarii and revolves around every 187 years. The distances between any of the stars in the system would allow possible formation of planetary systems about any of the stars, but would be of extremely close proximity to the mother star due to the gravitational pull of the other stars.
-==References==
-* [http://www.alcyone.de/cgi-bin/search.pl?object=HR7982 HR 7982]
-* [http://aladin.u-strasbg.fr/AladinPreview?-c=SV*+ZI++1956&ident=SV*+ZI++1956&submit=Aladin+previewer Image 4 Aquarii]
-{{clear}}
 ==Components==
+{| class=wikitable
-{| border="0" width="100%" cellpadding="2" cellspacing="1" style="float:right; margin-rigth:0.5em; background:#CDC9C9;"
 ! colspan="1" | NAME || [[Right ascension]] || [[Declination]] || [[Apparent magnitude]] (V) || [[Spectral type]] || Database references
 |- bgcolor="#FFFAFA"
@@ Line 85: / Line 78: @@
 |}
+==References==
+* [http://www.alcyone.de/cgi-bin/search.pl?object=HR7982 HR 7982]
+* [http://aladin.u-strasbg.fr/AladinPreview?-c=SV*+ZI++1956&ident=SV*+ZI++1956&submit=Aladin+previewer Image 4 Aquarii]
-{{var-star-stub}}
-{{Binary-star-stub}}
 {{Stars of Aquarius}}
 [[Category:Aquarius constellation]]
-[[Category:HD and HDE objects]]
 [[Category:Flamsteed objects|Aquarii, 4]]
+[[Category:HD and HDE objects|198571]]
+[[Category:HR objects|7982]]
 [[Category:Binary stars]]
+{{var-star-stub}}
+{{Binary-star-stub}}
 [[it:4 Aquarii]]