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Collinder 399 Asterism
Collinder 399 Asterism in the Constellation Vulpecula
There are lots of bright stars in the Collinder 399 asterism and I labelled 31 of them in the next section. Many years ago this group of stars was thought to be a cluster, however, by 1998 it was shown "by using proper motions and parallaxes from the Hipparcos and ACT catalogues" that it was not a cluster. Quote is from the paper "The nature of some doubtful open clusters as revealed by Hipparcos", H. Baumgardt, Astronomy and Astrophysics, 340, 402-414 (1998).
Logbook
- Date & Time: June 2, 2025, 11:35 pm
- Location: Kempt Shore, Nova Scotia, Canada, 45°N
- Conditions: Clear, calm, 12°C
- Moon: First quarter (59%)
- Moonset: 1:59 am, June 3
- Sunset: 8:59 pm
- Technical: 10-sec exposures, 30-min integration, battery power, home wifi, no filter, no post-processing
List of Stars
- HD 182422, V 6.393, B9.5V
- HD 182620, V 7.158, A2V
- HD 182718, V 8.35, Spectroscopic binary (yellow label)
- HD 182761, V 6.287, A0V
- HD 182762 (4 Vul), V 5.16, G9III
- HD 182919 (5 Vul), V 5.591, A0V
- HD 182955, V 5.87, M0III
- HD 182972, V 6.616, A1V
- HD 183261, V 6.879, B3II, Emission-line (yellow label)
- HD 349987, V 9.28, K0
- HD 349988, V 9.06, K5
- HD 349989, V 9.88, G0
- HD 349998, V 10.06, G5
- HD 349999, V 9.67, F9
- HD 350000, V 8.86, A0
- HD 350001, V 9.93, A3II
- HD 350027, V 9.93, F5
- HD 350028, V 10.59, F2
- HD 350030, V 11.02, G5
- HD 350031, V 10.7, F5
- HD 350032, V 11.72, G5
- HD 350033, V 11.04, F2, Pulsating variable (yellow label)
- HD 350035, V 9.81, A5
- HD 350036, V 10.16, K2
- HD 350037, V 9.24, G0
- HD 350040, V 8.84, A2
- HD 350042, V 8.66, F2
- TYC 1608-0177-1, V 11.48
- TYC 1608-0236-1, V 10.57
- TYC 1608-0581-1, V 10.84
- TYC 1612-0366-1, V 10.40
References
- "Gallery: Hanging on a star", Ron Brecher, S&T Vol. 144(4), October 2022, p. 79.
- "Asterisms identification using astrometric data", R.B. Orellana and M.S. De Biasi, RevMexAA (Serie de Conferencias), 34, 111-114 (2008).