Nu Cancri

{{Short description|Binary star system in the constellation Cancer}}

{{Starbox begin

| name = Nu Cancri

}}

{{Starbox image

| image =

{{Location mark

|image= Cancer IAU.svg|alt=|float=center|width=260

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=ν Cnc

|x=375|y=350

}}

| caption = Location of ν Cancri (circled)

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Cancer

| ra = {{RA|09|02|44.26543}}

| dec = {{DEC|+24|27|10.4902}}

| appmag_v = +5.46

}}

{{Starbox character

| class = A0 III

| b-v = −0.03

| u-b = −0.10

| r-i =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|−15.6|0.7}}

| prop_mo_ra = −2.48

| prop_mo_dec = −7.67

| parallax = 8.31

| p_error = 0.35

| parallax_footnote =

| absmag_v = +0.05

}}

{{Starbox orbit

| reference =

| axis =

| period_unitless = 1401.4 d

| eccentricity = 0.35

| periastron = 2419687 Julian day

| periarg = 264

| k1 = 7.7

}}

{{Starbox detail

| source =

| component1 = ν Cnc A

| mass = {{Val|2.82|0.13}}

| radius =

| luminosity = 93

| temperature = 10,250

| gravity =

| metal_fe = {{Val|−0.20|0.04}}

| rotational_velocity = {{Val|18.9|0.4}}

| age_myr =

}}

{{Starbox catalog

| names = {{odlist | B=ν Cnc | F=69 Cancri | FK5=2714 | BD=+25° 2029 | HD=77350 | HIP=44405 | HR=3595 | SAO=80595 }}

}}

{{Starbox reference

| Simbad = nu.+Cnc

}}

Nu Cancri, Latinised from ν Cancri, is a binary star in the zodiac constellation of Cancer. It is faintly visible to the naked eye with an apparent visual magnitude of +5.46. Based upon an annual parallax shift of 8.31 mas as seen from the Earth, the star is located roughly 390 light-years from the Sun.

This is a single-lined spectroscopic binary system with an orbital period of 3.8 years and an eccentricity of 0.35. The primary, component A, is a white-hued A-type giant star with a stellar classification of A0 III. It is a magnetic Ap star with a field strength of {{Val|846e−4|ul=T}}, showing abundance peculiarities in strontium, chromium and mercury. The star has 2.8 times the mass of the Sun and is radiating 93 times the Sun's luminosity from its photosphere at an effective temperature of {{val|10250|ul=K|fmt=commas}}.

References

{{reflist|refs=

{{citation

| title=Validation of the new Hipparcos reduction

| last1=van Leeuwen | first1=F.

| journal=Astronomy and Astrophysics

| volume=474 | issue=2 | pages=653–664 | date=2007

| arxiv=0708.1752 | bibcode=2007A&A...474..653V

| doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=. }}

{{citation

| 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 | doi=10.1134/S1063773712050015

| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}

{{citation

| title=A photometric study of chemically peculiar stars with the STEREO satellites - I. Magnetic chemically peculiar stars

| last1=Wraight | first1=K. T. | last2=Fossati | first2=L.

| last3=Netopil | first3=M. | last4=Paunzen | first4=E.

| last5=Rode-Paunzen | first5=M. | last6=Bewsher | first6=D.

| last7=Norton | first7=A. J. | last8=White | first8=Glenn J.

| journal=Monthly Notices of the Royal Astronomical Society

| volume=420 | issue=1 | pages=757–772 | date=February 2012

| doi=10.1111/j.1365-2966.2011.20090.x | doi-access=free | bibcode=2012MNRAS.420..757W

| arxiv=1110.6283 | s2cid=14811051 | display-authors=1 | postscript=. }}

{{citation

| last1=de Bruijne | first1=J. H. J. | last2=Eilers | first2=A.-C.

| title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project

| journal=Astronomy & Astrophysics

| volume=546 | id=A61 | pages=14 | date=October 2012

| doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D

| arxiv=1208.3048 | s2cid=59451347 | postscript=. }}

{{citation

| title=S_B⁹: The ninth catalogue of spectroscopic binary orbits

| journal=Astronomy & Astrophysics

| display-authors=1 | last1=Pourbaix | first1=D.

| last2=Tokovinin | first2=A. A. | last3=Batten | first3=A. H.

| last4=Fekel | first4=F. C. | last5=Hartkopf | first5=W. I.

| last6=Levato | first6=H. | last7=Morrell | first7=N. I.

| last8=Torres | first8=G. | last9=Udry | first9=S.

| volume=424 | issue=2 | pages=727–732 | date=2004

| doi=10.1051/0004-6361:20041213 | bibcode=2004A&A...424..727P

| arxiv=astro-ph/0406573 | s2cid=119387088

| postscript=. }}

{{citation

| display-authors=1 | last1=Royer | first1=F.

| last2=Grenier | first2=S. | last3=Baylac | first3=M.-O.

| last4=Gómez | first4=A. E. | last5=Zorec | first5=J.

| title=Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i

| journal=Astronomy and Astrophysics

| volume=393 | issue=3 | pages=897–911 | date=October 2002

| doi=10.1051/0004-6361:20020943 | bibcode=2002A&A...393..897R

| arxiv=astro-ph/0205255 | s2cid=14070763 | postscript=. }}

{{citation | display-authors=1

| last1=Johnson | first1=H. L. | last2=Iriarte | first2=B.

| last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z.

| title=UBVRIJKL photometry of the bright stars

| journal=Communications of the Lunar and Planetary Laboratory

| volume=4 | issue=99 | pages=99 | year=1966

| bibcode=1966CoLPL...4...99J | postscript=. }}

{{cite simbad

| title=nu. Cnc

| access-date=2017-06-17 }}

}}

Category:A-type giants

Cancri, Nu

Category:Cancer (constellation)

Category:Spectroscopic binaries