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Star in the constellation Sagitta
13 Sagittae is a single
[10]
star in the northern
constellation of
Sagitta . The designation comes from the star catalogue of
John Flamsteed , first published in 1712. It can be viewed with the naked eye, having an
apparent visual magnitude of 5.33.
[1] Based upon an annual
parallax shift of 3.20
mas as seen from Earth's orbit, it is located at a distance of around 310 parsecs (1,000 ly). It is moving closer to the Sun with a heliocentric
radial velocity of −17.56 km/s.
[5]
Pulsation Cycles
[1]
Period (days)
Amplitude (magnitude)
36.5
0.082
39.2
0.043
51.4
0.031
65.2
0.030
This is an
evolved
red giant with a
stellar classification of M4 III
[1] – a star that has used up its core
hydrogen and has expanded – and is currently on the
asymptotic giant branch .
[7] Classified as a
semiregular variable and given the
variable star designation VZ Sagittae , it varies between
apparent magnitudes 5.27 and 5.57.
[4] Il has expanded to around 186 times the
Sun's radius .
[6]
There is a magnitude 9.96 companion located at an
angular separation of 112.6
arcseconds along a
position angle of 297°, as of 2013.
[11] Designated HD 351107, this is a class F0 star.
[12]
References
^
a
b
c
d
e
f Tabur, V.; et al. (December 2009). "Long-term photometry and periods for 261 nearby pulsating M giants".
Monthly Notices of the Royal Astronomical Society . 400 (4): 1945–1961.
arXiv :
0908.3228 .
Bibcode :
2009MNRAS.400.1945T .
doi :
10.1111/j.1365-2966.2009.15588.x .
S2CID
15358380 .
^
a
b
c
d
e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics . 474 (2): 653–664.
arXiv :
0708.1752 .
Bibcode :
2007A&A...474..653V .
doi :
10.1051/0004-6361:20078357 .
S2CID
18759600 .
^
a
b
c Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331,
arXiv :
1108.4971 ,
Bibcode :
2012AstL...38..331A ,
doi :
10.1134/S1063773712050015 ,
S2CID
119257644 .
^
a
b VSX (25 August 2009).
"VZ Sagittae" . AAVSO Website .
American Association of Variable Star Observers . Retrieved 4 January 2015 .
^
a
b Famaey, B.; et al. (January 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics . 430 : 165–186.
arXiv :
astro-ph/0409579 .
Bibcode :
2005A&A...430..165F .
doi :
10.1051/0004-6361:20041272 .
S2CID
17804304 .
^
a
b Vallenari, A.; et al. (Gaia collaboration) (2023).
"Gaia Data Release 3. Summary of the content and survey properties" . Astronomy and Astrophysics . 674 : A1.
arXiv :
2208.00211 .
Bibcode :
2023A&A...674A...1G .
doi :
10.1051/0004-6361/202243940 .
S2CID
244398875 .
Gaia DR3 record for this source at
VizieR .
^
a
b Ortiz, Roberto; Guerrero, Martín A. (2016). "Ultraviolet emission from main-sequence companions of AGB stars". Monthly Notices of the Royal Astronomical Society . 461 (3): 3036.
arXiv :
1606.09086 .
Bibcode :
2016MNRAS.461.3036O .
doi :
10.1093/mnras/stw1547 .
S2CID
118619933 .
^ Soubiran, C.; et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics , 515 : A111,
arXiv :
1004.1069 ,
Bibcode :
2010A&A...515A.111S ,
doi :
10.1051/0004-6361/201014247 ,
S2CID
118362423
^
"13 Sge" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2018-02-28 .
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems".
Monthly Notices of the Royal Astronomical Society . 389 (2): 869–879.
arXiv :
0806.2878 .
Bibcode :
2008MNRAS.389..869E .
doi :
10.1111/j.1365-2966.2008.13596.x .
S2CID
14878976 .
^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal , 122 (6): 3466,
Bibcode :
2001AJ....122.3466M ,
doi :
10.1086/323920
^ Nesterov, V. V.; et al. (1995). "The Henry Draper Extension Charts: A catalogue of accurate positions, proper motions, magnitudes and spectral types of 86933 stars". Astronomy and Astrophysics . 110 : 367.
Bibcode :
1995A&AS..110..367N .