NNo GCVS J2000.0 Type Max Min I Min II Epoch Year Period M-m/D Spectrum References Other desig. p.m.(as/yr) Epoch Ident. New type GCVS -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 311489 |V1489 Cyg *|204625.54 +400659.4 |* | 11.19 | 12.54 | |R | | | 1280. | |M4.5-M7.9Ia-III |07462 09044| | |1998.482| |2MASS | |V1489 Cyg | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- _______________Cross-identifications:_______________ V1489 Cyg = CRL 2650 | V1489 Cyg = IRC +40448 | ____________________________________________________ Reference to a chart or photograph:09044. G. Neugebauer, D.E.Mertz, R.B. Leighton, ApJ 142, 399, 1965 {1965ApJ...142..399N}
Reference to a study of the star:
07462. D.W. Strecker, AJ 80, N6, 451, 1975 {1975AJ.....80..451S}
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Remark: NML Cyg. 17.0m: - 18.0m V, B>21M; I - K = +8.17. Very large IR exess due to expanding gaseous-dust envelope. In the area 2.5"*3.5" around the star the system of about 60 discrete sources of OH emission is detected [07461]; source of OH, H2O, SiO maser emission. Light variations are periodical (see also [09163]). The object may be a protostar being observed at the end of condensation process. The late spectrum arises probably in the extending envelope [09165, 09166].
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