Ruprecht 20

No dss image available for Ruprecht 20
 
Aladin viewer for the region around Ruprecht 20
C 0724-287, Lund 337, Ru 20, OCl 659

Type  Open Cluster
Magnitude  9.5
Size  6'
Right Ascension  7h 26'  (2000)
Declination  28° 49' S
Constellation  Canis Major
Classification  III 2 m
Observing Notes

Andrew Cooper
Oct 24, 2023    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 6 Transparency: 7 Moon: 0%

An enhanced clump of galactic starfield, 5' in diameter centered on the 8.8 magnitude star HD 58959, partially resolved, not a convincing cluster, 45' northeast of Aludra, 26' northwest of HR 2863

Archinal and Hynes notes "Doubtful cluster"

Andrew Cooper
Feb 25, 2020    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 61x
Seeing: 7 Transparency: 7 Moon: 0%

A mere clump in a rich galactic starfield, not much of a cluster , faint, not detached, partially resolved

Andrew Cooper
Jan 14, 2018    Kaʻohe, Mauna Kea, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 127x
Seeing: 7 Transparency: 7 Moon: 0%

A marginal cluster, a mere clump in a rich starfield, centered on a bright 9th magnitude star, 5' in diameter
Other Data Sources for Ruprecht 20
Nearby objects for Ruprecht 20
5 objects found within 60'
Aludra Haffner7 HD 58215
HD 59256 Ru22
Credits...

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

A complete list of credits and sources can be found on the about page

Ruprecht 20