This template is used to display information on a star system consisting of 2 stars. The template should be used as shown below. Unused arguments may be omitted. Arguments containing _a give information for the first component. There are corresponding arguments with _b which give information for the second component. For example, radius_b gives the radius of the second component.
There are four possibilities for displaying the right ascension and declination.
- Coordinates of the center of mass of the system are displayed, and formatting is done by the template. Use ra_system_h, ra_system_m, ra_system_s, dec_system_d, dec_system_m, and dec_system_s.
- Coordinates of the center of mass of the system are displayed, and formatting is done by the editor. Use ra_system and dec_system. Use of the {{RA}} template is recommended for formatting the right ascension, and the {{DEC}} template for formatting the declination.
- Coordinates of each component are displayed, and formatting is done by the template. Use ra_a_h, ra_a_m, ra_a_s, ra_b_h, ra_b_m, ra_b_s, dec_a_d, dec_a_m, dec_a_s, dec_b_d, dec_b_m, and dec_b_s.
- Coordinates of each component are displayed, and formatting is done by the editor. Use ra_a_1 and ra_b_1 for the first line of right ascension and dec_a_1 and dec_b_1 for the first line of declination. If a second line is desired (this may narrow the infobox), use ra_a_2 and ra_b_2 for the second line of right ascension, and dec_a_2 and dec_b_2 for the second line of declination. Use of the {{RA}} template is recommended for formatting the right ascension, and the {{DEC}} template for formatting the declination.
If the argument parallax is provided and dist_ly and dist_pc are omitted, the distances will be calculated automatically from the parallax (and the parallax error p_error, if provided.)
{{Starbox 2
| name = <!--System name-->
| image = <!--Image-->
| caption = <!--Optional caption-->
| epoch = <!--Epoch of observation-->
| equinox = <!--Equinox of coordinates (defaults to epoch)-->
| constell = <!--Constellation name-->
| component_a = <!--First component name, designation, or letter -->
| ra_system = <!--Right ascension, system barycenter (or use ra_system_h, ra_system_m, ra_system_s instead) -->
| dec_system = <!--Declination, system barycenter (or use dec_system_d, dec_system_m, dec_system_s instead)-->
| ra_system_h = <!--Right ascension, system barycenter, hours -->
| ra_system_m = <!--Right ascension, system barycenter, minutes -->
| ra_system_s = <!--Right ascension, system barycenter, seconds -->
| dec_system_d = <!--Declination, system barycenter, degrees -->
| dec_system_m = <!--Declination, system barycenter, minutes -->
| dec_system_s = <!--Declination, system barycenter, seconds -->
| radec_system_footnote = <!--Footnote, right ascension and declination of system -->
| ra_a_1 = <!--Right ascension, first component (or use ra_a_h, ra_a_m, ra_a_s instead) -->
| dec_a_1 = <!--Declination, first component (or use dec_a_d, dec_a_m, dec_a_s instead) -->
| ra_a_2 = <!--Right ascension, first component, second line (or use ra_a_h, ra_a_m, ra_a_s instead)-->
| dec_a_2 = <!--Declination, first component, second line (or use dec_a_d, dec_a_m, dec_a_s instead)-->
| ra_a_h = <!--Right ascension, first component, hours -->
| ra_a_m = <!--Right ascension, first component, minutes -->
| ra_a_s = <!--Right ascension, first component, seconds -->
| dec_a_d = <!--Declination, first component, degrees -->
| dec_a_m = <!--Declination, first component, minutes -->
| dec_a_s = <!--Declination, first component, seconds -->
| radec_a_footnote = <!--Footnote, right ascension and declination of first component -->
| appmag_v_a = <!--Apparent magnitude (Johnson-Cousins V system), first component-->
| class_a = <!--Stellar class, first component-->
| r-i_a = <!--R-I color index, first component-->
| v-r_a = <!--V-R color index, first component-->
| b-v_a = <!--B-V color index, first component-->
| u-b_a = <!--U-B color index, first component-->
| variable_a = <!--Variability type, first component-->
| radial_v_a = <!--Radial velocity (in km/sec), first component-->
| prop_mo_ra_system = <!--Proper motion (RA), μα cos δ (in milliarcsec/yr), system barycenter-->
| prop_mo_dec_system = <!--Proper motion (Dec), μδ (in milliarcsec/yr), system barycenter-->
| prop_mo_ra_a = <!--Proper motion (RA), μα cos δ (in milliarcsec/yr), first component-->
| prop_mo_dec_a = <!--Proper motion (dec), μδ (in milliarcsec/yr), first component-->
| parallax = <!--Parallax (in milliarcsec), system-->
| p_error = <!--Parallax error (in milliarcsec), system-->
| parallax_footnote = <!--Parallax footnote-->
| dist_ly = <!--Distance (in light years), system-->
| dist_pc = <!--Distance (in parsecs), system-->
| absmag_v_a = <!--Absolute magnitude (Johnson-Cousins V system), first component-->
| mass_a = <!--Mass (in solar masses), first component-->
| radius_a = <!--Radius (in solar radii), first component-->
| gravity_a = <!--Surface gravity (given as the base 10 logarithm expressed in cgs units), first component-->
| luminosity_a = <!--Luminosity (in solar luminosities), first component-->
| temperature_a = <!--Temperature (in Kelvin), first component-->
| metal_a = <!--Metallicity (no units provided by template), first component-->
| rotation_a = <!--Rotation (no units provided by template), first component-->
| age = <!--Age (in years), system-->
| orbit_footnote = <!--Footnote for orbit-->
| primsec = <!--Secondary/primary for orbit (e.g., A/B for orbit of A about B)
| period = <!--Period of orbit, in years-->
| axis_unitless = <!--Semimajor axis of orbit (no units provided by template)-->
| eccentricity = <!--Eccentricity of orbit-->
| inclination = <!--Inclination of orbit, in degrees-->
| node = <!--Nodal longitude of orbit, in degrees-->
| periastron = <!--Epoch of periastron of orbit (no units provided by template)-->
| periarg = <!--Argument of periastron of orbit, in degrees-->
| primary = <!--Name, designation or letter of body relative to which separation is known -->
| separation_epoch_a = <!--Epoch of observation of separation, first component-->
| angdistsec_a = <!--Angular distance from primary, in arcseconds, first component-->
| angdistmas_a = <!--Angular distance from primary, in milliarcseconds, first component-->
| angdist_footnote_a = <!--Footnote for angular distance, first component-->
| posang_a = <!--Position angle relative to primary, in degrees, first component-->
| posang_footnote_a = <!--Footnote for position angle, first component-->
| projsep_a = <!--Observed projected separation from primary, in AU, first component-->
| projsep_footnote_a = <!--Footnote for observed projected separation, first component-->
| simbad_a = <!--Search ID for SIMBAD data reference (see {{SIMBAD link}}), first component-->
| aricns_a = <!--Search ID for ARICNS data reference (see {{ARICNS link}}), first component-->
| names = <!--Alternate designations-->
}}