| gptkbp:instanceOf | gptkb:star 
 | 
                        
                            
                                | gptkbp:age | 5.6 billion years 
 | 
                        
                            
                                | gptkbp:alsoKnownAs | gptkb:40_Eridani 
 | 
                        
                            
                                | gptkbp:apparentMagnitude | 4.43 
 | 
                        
                            
                                | gptkbp:catalogueNumber | gptkb:HR_1325 gptkb:HD_26965
 gptkb:Gliese_166
 
 | 
                        
                            
                                | gptkbp:component | gptkb:40_Eridani_B gptkb:40_Eridani_A
 gptkb:40_Eridani_C
 red dwarf (C)
 white dwarf (B)
 main sequence star (A)
 
 | 
                        
                            
                                | gptkbp:constellation | gptkb:Eridanus 
 | 
                        
                            
                                | gptkbp:declination | -07° 39′ 10″ 
 | 
                        
                            
                                | gptkbp:discoveredBy | gptkb:William_Herschel 
 | 
                        
                            
                                | gptkbp:discoveredIn | 1783 
 | 
                        
                            
                                | gptkbp:distanceFromEarth | 16.3 light years 
 | 
                        
                            
                                | gptkbp:luminosity | 0.0034 solar luminosities (C) 0.013 solar luminosities (B)
 0.36 solar luminosities (A)
 
 | 
                        
                            
                                | gptkbp:mass | 0.2 solar masses (C) 0.5 solar masses (B)
 0.83 solar masses (A)
 
 | 
                        
                            
                                | gptkbp:metallicity | [Fe/H] = -0.31 
 | 
                        
                            
                                | gptkbp:notableFor | first white dwarf discovered (40 Eridani B) 
 | 
                        
                            
                                | gptkbp:parallax | 199.5 mas 
 | 
                        
                            
                                | gptkbp:platform | gptkb:binary_star_system 
 | 
                        
                            
                                | gptkbp:rightAscension | 04h 15m 16.3s 
 | 
                        
                            
                                | gptkbp:spectralType | K1V 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:40_Eridani_triple_star_system 
 | 
                        
                            
                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Keid 
 |