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
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
310389 |V0389 Cyg *|210838.89 +301220.3 |* | 5.55 | 5.71 | |V | | | | |B9Vp(Si) |01256 01182| |+0.025 -0.021|2000.0 | |Hip | |V0389 Cyg |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
_______________Cross-identifications:_______________
V0389 Cyg = ADS 14682 |A
V0389 Cyg = BD +29 4324 |
V0389 Cyg = BS 08094 |
V0389 Cyg = GSC 02701.03919 |
V0389 Cyg = HD 201433 |
V0389 Cyg = Hip 104371 |
V0389 Cyg = SAO 070968 |
____________________________________________________
Reference to a chart or photograph:
01182. H.Schneller, Sterne 17, 87, 1937.
Reference to a study of the star:
01256. P.Guthnick, Sterne 22, 129, 1942.
__________________________________________________________________
Remark:
VB A (B 8.0m, 3.4", 305deg, 1980). SB (P = 3.313168d);
Turns around the invisible third companion with
P = 154.09d. According to [01256] the light varies with
two alternate periods P1 and P2. The first oscillation
(P1) with A = 0.19m satisfies the elements: Max =
2423298.460 + 1.12912d*E, the second (P2) with A =
0.05m - the elements: Max = 2429162.080 + 1.19328d*E.
each of them continues for 1 - 3 weeks. At the transition
from one oscillation to the other irregular light
variations are sometimes observed or almost constant
brightness. At the renewal of each oscillation its phase
remains unchanged, experiencing no shift. According
to [08909] in 1975 - 1977 periodicity was not observed.
----The End----