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 WR 21a...
Stars indicate closer matches.
HD 97950 
- AB8 (star)
- CD Crucis
- Theta Muscae
- WR 137
- WR 148
- HD 93129
- HD 93205
- HD 93403
- QZ Carinae
- AG Carinae
- NGC 2867
- NGC 3603-A1
- NGC 3603-B
- NGC 3603-C
- WR 20a
- WR 22
- WR 24
- WR 25
- WR 30a
- WR 31a
- WR 42e
- O-type main-sequence star
- 9 Sagittarii
- 10 Lacertae
- AE Aurigae
- AO Cassiopeiae
- BI 253
- Delta Circini
- DH Cephei
- HD 15558
- HD 35619
- HD 48099
- HD 93521
- HD 150136
- HD 193322
- HD 206267
- LH 54-425
- LS 5039
- MACHO 80.7443.1718
- Mu Columbae
- MY Camelopardalis
- NGC 1624-2
- PSR B1259−63/LS 2883
- S Monocerotis
- Sigma Orionis
- Theta1 Orionis C
- TU Muscae
- Upsilon Orionis
- V3903 Sagittarii
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