Talk:Q636721
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Autodescription — NGC 1998 (Q636721)
description: galaxy
- Useful links:
- View it! – Images depicting the item on Commons
- Report on constraint conformation of “NGC 1998” claims and statements. Constraints report for items data
- See also
- This documentation is generated using
{{Item documentation}}.
Correct identification of this object[edit]
The correct identification of some NGC objects is difficult due to errors and misunderstandings of the original observers and of the astronomers that, during time, re-analyzed the data.
Use the information of different sources, NGC 1998 has different identifications. Following the prescription of NGC/IC project the correct identification of NGC 1998 is PGC 17434, but not NGC 1995!
| Source | Other NGC | PGC | Link | Notes |
|---|---|---|---|---|
| NGC/IC project in VizieR (Q1662358) | --- | PGC 17434 | [1] | right identification |
| NASA/IPAC Extragalactic Database (Q488563) | --- | PGC 17434 | [2] | right identification |
| Lyon-Meudon Extragalactic Database (Q6709611) | --- | PGC 17434 | [3] | right identification |
| SIMBAD (Q654724) | NGC 1995 | PGC 17434 | [4] | right identification, but wrong assignment to NGC 1995! |
- It would be prudent do not use SIMBAD (Q654724) database to recover catalog names of this object!