thingsaurus
This is a 'thesaurus for things' or similarity engine: results show things that have something in common with what you enter. The more stars, the more things in common! You can use it for research, recommendations or simply to explore ideas and related subjects.
Here are your results for NGC 644...
Stars indicate closer matches.
NGC 31 
- NGC 88
- NGC 89
- NGC 98
- NGC 238
- NGC 328
- NGC 625
- Phoenix (constellation)
- List of stars in Phoenix
- AD Phoenicis
- AE Phoenicis
- AI Phoenicis
- Alpha Phoenicis
- AZ Phoenicis
- BB Phoenicis
- BD Phoenicis
- Beta Phoenicis
- CD-44 170
- Delta Phoenicis
- El Gordo (galaxy cluster)
- Epsilon Phoenicis
- Eta Phoenicis
- Gamma Phoenicis
- HD 142
- HD 142 b
- HD 2039
- HD 2039 b
- HD 4391
- HD 5388
- HD 6434
- HD 6434 b
- HD 8535
- HD 8535 b
- HD 12055
- HD 222095
- HE 0107-5240
- HLX-1
- Iota Phoenicis
- Kappa Phoenicis
- Lambda Phoenicis
- Lambda1 Phoenicis
- Mu Phoenicis
- NGC 25
- NGC 28
- NGC 37
- NGC 87
- NGC 92
- NGC 119
- NGC 159
- NGC 212
DID YOU MEAN...
- Carina Nebula
- NGC 905
- List of NGC objects (1–1000)
- Messier 89
- NGC 246
- 267 (number)
- NGC 6753
- 264 (number)
- 30 (number)
- 89 (number)
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