Astronomy   View all facts   Glossary   Help | 
| physical object > natural object > celestial body > collection of stars > galaxy > active galaxy > blazar > BL Lacertae > X-ray selected BL Lac object | 
| X-ray selected BL Lac object (SBL)  | ||||
| subject | fact | |||
| X-ray selected BL Lac object | has acronym SBL | ![]()  | 
| is a kind of BL Lacertae | ![]()  | |
| BL Lacertae | has synonym BL Lac | ![]()  | 
| active galaxy | has luminosity 1043 to 1046 ergs s-1 | ![]()  | 
| galaxy | has number of stars 106 to 1012 | ![]()  | 
| has catalog galaxy catalog | ![]()  | |
| radio source | has wavelength radio | ![]()  | 
| is a part of celestial sphere | ![]()  | |
| has catalog radio source catalog | ![]()  | |
| celestial body | has spectra | ![]()  | 
| physical object | has location or center of gravity | ![]()  | 
| has angular momentum | ![]()  | |
| has mass | ![]()  | |
| has velocity | ![]()  | |
| has momentum | ![]()  | |
| has temperature | ![]()  | |
| has volume | ![]()  | |
| has extent | ![]()  | |
| has material | ![]()  | 
Next BL Lacertae: High energy peaked BL Lac object     Up: BL Lacertae