LS Canis Majoris

{{short description|Binary star system in the constellation Canis Major}}

{{Starbox image

| image = 250px

| caption = A light curve for LS Canis Majoris from BRITE nanosatellite data, adapted from Ratajczak et al. (2019)

}}

{{Starbox observe

|epoch=J2000

|ra={{RA|07|01|05.94626}}

|dec={{DEC|-25|12|56.2817}}

|appmag_v=5.63{{snd}}5.79

|constell=Canis Major

}}

{{Starbox character

|class=B2/3III/IV

|variable = Eclipsing binary

}}

{{Starbox astrometry

|radial_v=6.0

|prop_mo_ra=−4.638

|prop_mo_dec=+5.332

|parallax=2.1591

|p_error=0.0613

|parallax_footnote=

|absmag_v=−2.04

}}

{{Starbox catalog

|names=LS CMa, CD−25°3911, HR 2640, HD 52670, HIP 33804, SAO 172763, GC 9253

}}

{{Starbox reference

|Simbad=LS+CMa }}

LS Canis Majoris is an eclipsing binary star located around 1,510 light years from Earth in the constellation Canis Major. Its apparent magnitude ranges from 5.63 to 5.79, so it is faintly visible to the naked eye. The orbital period of binary pair and the period of light variation is 70.048 days.

The star's variability was first detected in the Hipparcos satellite data, and it was given its variable star designation in 1999.

References

{{reflist|refs=

{{Cite journal

|title = Catalogue of two-dimensional spectral types for the HD stars, Vol.4

|last1 = Houk |first1 = N. |last2 = Smith-Moore |first2 = M.

|journal = Michigan Spectral Survey

|volume = 4 |date = 1988

|bibcode = 1988mcts.book.....H

}}

{{cite journal

| last7=Pastukhova | first7=E. N. | title=The 74th Special Name-list of Variable Stars

| journal=Information Bulletin on Variable Stars |date=January 1999 | volume=4659 | bibcode=1999IBVS.4659....1K

| url=https://ibvs.konkoly.hu/pub/ibvs/4601/4659.pdf | access-date=10 October 2024}}

{{cite web |url=https://www.aavso.org/vsx/index.php?view=detail.top&oid=5420 |title=LS CMa |website=International Variable Star Index |publisher=AAVSO |access-date=2022-08-29 }}

{{cite journal|title=Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations|author1=Kharchenko, N. V.|display-authors=etal|journal=Astronomische Nachrichten|volume=328|issue=9|page=889|date=2007|bibcode=2007AN....328..889K|doi=10.1002/asna.200710776|arxiv=0705.0878|s2cid=119323941}}

{{cite web |url = http://simbad.u-strasbg.fr/simbad/sim-id?Ident=LS+CMa&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id |title = LS Canis Majoris - Eclipsing Binary |work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg |accessdate = 2 March 2014}}

{{cite journal |last1=Ratajczak |first1=M. |last2=Pigulski |first2=A. |last3=Pavlovski |first3=K. |title=Tracking massive pairs |journal=Contributions of the Astronomical Observatory Skalnaté Pleso |date=May 2019 |volume=49 |issue=2 |pages=252–257 |bibcode=2019CoSka..49..252R |url=https://ui.adsabs.harvard.edu/abs/2019CoSka..49..252R |access-date=15 November 2021}}

{{cite journal |bibcode=2020Ap&SS.365..112M |title=Distance scale for high-luminosity stars in OB associations and in field with Gaia DR2. Spurious systematic motions |last1=Melnik |first1=A. M. |last2=Dambis |first2=A. K. |journal=Astrophysics and Space Science |year=2020 |volume=365 |issue=7 |page=112 |doi=10.1007/s10509-020-03827-0 |arxiv=2006.14649 |s2cid=220128144 }}

}}

Category:Canis Major

Category:Eclipsing binaries

Category:B-type giants

Category:B-type subgiants