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Star in the constellation Ophiuchus
This article is about d Ophiuchi. Not to be confused with
δ Ophiuchi .
45 Ophiuchi is a single
[10]
star in the
equatorial
constellation of
Ophiuchus , along the southern border with
Scorpius . It has the
Bayer designation d Ophiuchi , while 45 Ophiuchi is the
Flamsteed designation . In the past it had the designation Theta Telescopii .
[11] This object is visible to the naked eye as a faint, yellow-white hued star with an
apparent visual magnitude of 4.28.
[2] It is located approximately 111.6
light years away from the Sun based on
parallax .
[1] The star is drifting further from the Earth with a heliocentric
radial velocity of +38 km/s.
[5]
This object has a
stellar classification of F5III-IV,
[3] matching an
F-type star with a
luminosity class displaying mixed traits of a
subgiant and a
giant star . It is 1.2
[7] billion years old with 1.7
[6] times the
mass of the Sun and 3.2
[6] times the
Sun's radius . The star is radiating 19
[2] times the
luminosity of the Sun from its
photosphere at an
effective temperature of 6,750 K.
[7] It is spinning with a
projected rotational velocity of 65 km/s.
[8]
References
^
a
b
c
d
e
f 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 .
Vizier catalog entry
^
a
b
c
d
e 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 .
Vizier catalog entry
^
a
b Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal . 132 (1): 161–170.
arXiv :
astro-ph/0603770 .
Bibcode :
2006AJ....132..161G .
doi :
10.1086/504637 .
S2CID
119476992 .
^
a
b Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie . 2168 .
Bibcode :
2006yCat.2168....0M .
Vizier catalog entry
^
a
b Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters . 32 (11): 759–771.
arXiv :
1606.08053 .
Bibcode :
2006AstL...32..759G .
doi :
10.1134/S1063773706110065 .
S2CID
119231169 .
^
a
b
c
d
e Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics . 352 : 555–562.
arXiv :
astro-ph/9911002 .
Bibcode :
1999A&A...352..555A .
Vizier catalog entry
^
a
b
c
d
e Pace, G. (March 2013). "Chromospheric activity as age indicator. An L-shaped chromospheric-activity versus age diagram". Astronomy & Astrophysics . 551 : 4.
arXiv :
1301.5651 .
Bibcode :
2013A&A...551L...8P .
doi :
10.1051/0004-6361/201220364 .
S2CID
56420519 . L8.
^
a
b De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics . 561 : A126.
arXiv :
1312.3474 .
Bibcode :
2014A&A...561A.126D .
doi :
10.1051/0004-6361/201220762 .
S2CID
54046583 .
Vizier catalog entry
^
"d Oph" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2019-06-22 .
^ 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 .
^
Ian Ridpath .
"Telescopium - The Telescope" . Ian Ridpath's Star Tales . Retrieved 2019-06-23 .