G089.0+4.7
RA50:20 43 30 DEC50:+50 25 00 Shell 120x90' HB21
Name of map
Bibcode & ADS-link
Comments
G089.0+4.7p
1990A&AS...85..633R
G089.0+4.7
1983IAUS..101..377R
G089.0+4.7
1975A&A....39..453W
G089.0+4.7
1990ApJS...73..781S
G089.0+4.7
1973A&A....26..237W
Radio spectrum