HD 37605
{{Short description|Star in the constellation Orion}}
{{Starbox begin}}
{{Starbox observe
| epoch = J2000.0
| constell = Orion
}}
{{Starbox character
| type =
| variable =
}}
{{Starbox astrometry
| radial_v = {{Val|−22.08|0.15}}
| prop_mo_ra = {{val|52.246|(26)}}
| prop_mo_dec = {{val|−247.136|(17)}}
| parallax = 21.4364
| p_error = 0.0224
}}
{{Starbox detail
| mass = {{Val|0.98|0.01}}
| radius = {{Val|0.89|0.01}}
| luminosity = {{Val|0.602|0.002}}
| gravity = {{Val|4.52|0.01}}
| temperature = {{Val|5380|13|fmt=commas}}
| metal_fe = {{Val|0.25|0.04}}
| rotation = 57.67 days
| age_gyr = {{Val|1.8|1.0}} or 7
}}
{{Starbox catalog
| names = {{odlist | BD=+05°985 | FK5= | HD=37605 | HIP=26664 | HR= | SAO=113015 | LTT=11695 }}
}}
{{Starbox reference
| Simbad = HD+37605
| EPE = HD+37605
| NSTED = HD 37605
}}
{{Starbox end}}
HD 37605 is a star in the equatorial constellation of Orion. It is orange in hue but is too faint to be visible to the naked eye, having an apparent visual magnitude of 8.67. Parallax measurements yield a distance estimate of 152 light years from the Sun. It has a high proper motion and is drifting closer with a radial velocity of −22 km/s.
This object is a K-type main-sequence star with a stellar classification of K0 V. It is an inactive, metal-rich star. Age estimates range from 1.8 up to 7 billion years old, and it is spinning with a projected rotational velocity of 4.5 km/s. The star has 98% of the mass of the Sun and 89% of the Sun's radius. It is radiating 60% of the luminosity of the Sun from its photosphere at an effective temperature of 5,380 K.
Planets
There are two giant planets known in orbit. Planet b was discovered in 2004 and planet c was discovered eight years later. The planets do not transit relative to Earth; b's maximum inclination is 88.1%.
In a simulation, HD 37605 b's orbit "sweeps clean" most test particles within 0.5 AU; leaving only asteroids "in low-eccentricity orbits near the known planet’s apastron distance, near the 1:2 mean-motion resonance" with oscillating eccentricity up to 0.06, and also at 1:3 with oscillating eccentricity up to 0.4. Also, observation has ruled out planets heavier than 0.7 Jupiter mass with a period of one year or less; which still allows for planets at 0.8 AU or more.
{{OrbitboxPlanet begin
}}
{{OrbitboxPlanet
| exoplanet = b
| mass = {{val|2.69|0.3|p=≥}}
| semimajor = {{val|0.277|0.015}}
| period = {{val|55.01292|0.00062}}
| eccentricity = {{val|0.6745|0.0019}}
}}
{{OrbitboxPlanet
| exoplanet = c
| mass = {{val|3.19|0.38|p=≥}}
| semimajor = {{val|3.74|0.21}}
| period = {{val|2720|15}}
| eccentricity = {{val|0.03|0.012}}
}}
{{Orbitbox end}}
References
{{Reflist|refs=
{{Cite simbad | title=HD 37605 | access-date=2019-12-31 }}
| title=Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants
| last1=Luck | first1=R. Earle
| journal=The Astronomical Journal
| volume=153 | issue=1 | id=21 | pages=19 | date=January 2017
| bibcode=2017AJ....153...21L | arxiv=1611.02897
| doi=10.3847/1538-3881/153/1/21 | s2cid=119511744 | doi-access=free }}
| display-authors=1 | last1=Aguilera-Gómez | first1=Claudia
| last2=Ramírez | first2=Iván | last3=Chanamé | first3=Julio
| title=Lithium abundance patterns of late-F stars: An in-depth analysis of the lithium desert
| journal=Astronomy and Astrophysics
| volume=614 | pages=A55 | year=2018
| arxiv=1803.05922 |doi=10.1051/0004-6361/201732209
| bibcode=2018A&A...614A..55A | s2cid=62799777 }}
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | arxiv=1108.4971
| doi=10.1134/S1063773712050015 | s2cid=119257644 }}
| title=The Discovery of HD 37605c and a Dispositive Null Detection of Transits of HD 37605b
| last1=Wang Xuesong | first1=Sharon | last2=Wright | first2=Jason T.
| last3=Cochran | first3=William | last4=Kane | first4=Stephen R.
| last5=Henry | first5=Gregory W. | last6=Payne | first6=Matthew J.
| last7=Endl | first7=Michael | last8=MacQueen | first8=Phillip J.
| last9=Valenti | first9=Jeff A. | last10=Antoci | first10=Victoria
| last11=Dragomir | first11=Diana | last12=Matthews | first12=Jaymie M.
| last13=Howard | first13=Andrew W. | last14=Marcy | first14=Geoffrey W.
| last15=Isaacson | first15=Howard | last16=Ford | first16=Eric B.
| last17=Mahadevan | first17=Suvrath | last18=von Braun | first18=Kaspar
| display-authors=1 | journal=Astrophysical Journal
| year=2012 | volume=761 | issue=1 | pages=46
| arxiv=1210.6985 | bibcode=2012ApJ...761...46W
| doi=10.1088/0004-637X/761/1/46 | s2cid=118679173 }}
| url=http://www.abstractsonline.com/Plan/ViewAbstract.aspx?sKey=ca3fe43b-0d3d-4ef8-8872-5c048b7dd028&cKey=f76c07ea-7315-4f15-969d-8aa3cbadecbf&mKey=%7b25369F54-5CB0-4639-BC20-B20273090B9A%7d#
| first=S. | last=Kane
| title=The TERMS Project: More Than Just Transit Exclusion
| journal=OASIS
| date=2012 | volume=44 | number=228.07
| bibcode=2012AAS...21922807K }}
{{cite journal | url=http://www.iop.org/EJ/article/1538-3881/134/3/1276/205882.html | last1=Wittenmyer | first1=Robert A. | last2=Endl | first2=Michael | last3=Cochran | first3=William D. | last4=Leviso | first4=Harold F. | title=Dynamical and Observational Constraints on Additional Planets in Highly Eccentric Planetary Systems | display-authors=1 | journal=The Astronomical Journal | volume=134 | issue=3 | pages=1276–1284 | date=2007 | doi=10.1086/520880 | arxiv=0706.1962 | bibcode=2007AJ....134.1276W | s2cid=14345035 | access-date=2012-10-29 | archive-date=2012-08-02 | archive-url=https://archive.today/20120802134046/http://www.iop.org/EJ/article/1538-3881/134/3/1276/205882.html | url-status=dead }}
| title=Revising the ages of planet-hosting stars
| url=http://www.aanda.org/articles/aa/full_html/2015/03/aa24951-14/aa24951-14.html
| last1=Bonfanti | first1=A. | last2=Ortolani | first2=S.
| last3=Piotto | first3=G. | last4=Nascimbeni | first4=V.
| display-authors=1 | journal=Astronomy and Astrophysics
| year=2015 | volume=575 | at=A18 | arxiv=1411.4302
| bibcode=2015A&A...575A..18B | doi=10.1051/0004-6361/201424951 | s2cid=54555839
}}
| title=The First Hobby-Eberly Telescope Planet: A Companion to HD 37605
| last1=Cochran | first1=Michael | last2=Endl | first2=Michael
| last3=McArthur | first3=Barbara | last4=Paulson | first4=Diane B.
| last5=Smith | first5=Verne V. | last6=MacQueen | first6=Phillip J.
| last7=Tull | first7=Robert G. | last8=Good | first8=John
| last9=Booth | first9=John | last10=Shetrone | first10=Matthew
| last11=Roman | first11=Brian | last12=Odewahn | first12=Stephen
| last13=Deglman | first13=Frank | last14=Graver | first14=Michelle
| last15=Soukup | first15=Michael | last16=Villarreal, Jr. | first16=Martin L.
| display-authors=1 | journal=The Astrophysical Journal Letters
| volume=611 | issue=2 | pages=L133–L136 | year=2004
| arxiv=astro-ph/0407146 | bibcode=2004ApJ...611L.133C
| doi=10.1086/423936 | s2cid=85460384 }}
{{Cite Gaia DR3|3332911492327546368}}
| title=Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810
| last1=Ment | first1=Kristo | last2=Fischer | first2=Debra A.
| last3=Bakos | first3=Gaspar | last4=Howard | first4=Andrew W.
| last5=Isaacson | first5=Howard | display-authors=1
| journal=The Astronomical Journal
| volume=156 | issue=5 | at=213 | year=2018
| arxiv=1809.01228 | bibcode=2018AJ....156..213M
| doi=10.3847/1538-3881/aae1f5 | s2cid=119243619 | doi-access=free }}
}}
External links
{{Sky|05|40|01.7296|+|06|03|38.085|139.9}}
{{Stars of Orion}}
{{DEFAULTSORT:HD 37605}}
Category:K-type main-sequence stars
Category:Planetary systems with two confirmed planets
Category:Orion (constellation)