Random triples
| Subject | Object |
|---|---|
| gptkb:C-type_comet | contains a mixture of ices and dust |
| gptkb:NGC_253 | gptkb:active_galactic_nucleus |
| gptkb:NGC_2993 | active nucleus with Seyfert characteristics |
| gptkb:NGC_5246 | active nucleus |
| gptkb:Jupiter-family_comets | typically a few kilometers across |