Coord 2000 | 19448+2916 | Discov num | ISM 4 | Comp | Aa,Ab | Coord arcsec 2000 | 19 44 48.74 +29 15 52.9 | ||||
Date first | 1949 | Date last | 1988 | Obs | 4 | ||||||
Pa first | 119 | Pa last | 166.7 | P.A. Now (θ) | 166.7° | ||||||
Sep first | 0.1 | Sep last | 0.041 | Sep. Now (ρ) | 0.041" | ||||||
Mag pri | 7.00 | Mag sec | 8.00 | delta mag (ΔM) | 1 | Spectral class | F2Iab+B8V (yellow-white/blue-white) | ||||
Pri motion ra | +000 | Sec motion ra | |||||||||
Pri motion dec | -003 | Sec motion dec | |||||||||
Notes | N (See Notes) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 87659 | 19 44 49 +29 15 53 | ISM 4 Aa,Ab | 1988 | 4 | 167 | 0.0 | 7.00 | 8.00 | 1.00 | <=== | ||
Show | SU Cyg | 87659 | 19 44 49 +29 15 53 | WRH 23 AE | 2015 | 10 | 289 | 24.8 | 7.03 | 10.54 | 3.51 | ||
Show | 87659 | 19 44 49 +29 15 53 | WRH 23 AF | 2015 | 9 | 18 | 71.1 | 7.03 | 10.88 | 3.85 | |||
Show | 87659 | 19 44 49 +29 15 53 | WRH 23 AG | 2015 | 9 | 88 | 75.9 | 7.03 | 10.21 | 3.18 | |||
Show | 87659 | 19 44 49 +29 15 53 | EVS 42 AH | 2015 | 2 | 87 | 25.4 | 6.90 | 16.90 | 10.00 | |||
Show | 87659 | 19 44 49 +29 15 53 | KRV 40 AI | 2015 | 1 | 34 | 42.4 | 6.90 | 19.20 | 12.30 |
Var name | SU Cyg | Constellation | Cygnus | SAO | 87659 | HIP | 97150 | ||||
Tycho2 | 2151-05896-1 | Gaia DR2 | 2031776202613700480 | HD | 186688 | HR | 7518 | ||||
BD | BD+28 3460 | Distance | 787.4 | Distance ly | 2568.5 |
discov_num | notes | refcode |
ISM 4 | The Cepheid SU Cyg. This is also known as WRH 23Aa,Ab. The Wilson | |
component were previously assigned to 19372+2920, but this was a | ||
position error on Wilson's part leading to the the pairs not being | WRH1950a | |
confirmed for many years. The wider components of Wilson will retain | ||
their historical, AE, AF, and AG component identifiers. The closer | ||
Aa,Ab pair will remain ISM 4. The problem was noted by Cliff | ||
Ashcraft and the correct system found by James Daley. | ||
Masses are 4.7 and 3.2 Msun. Estimated period = 1.5y, | ||
a = 2.6au = 0.003". | Evs2013 |
refcode | metd | author | reference |
Evs2013 | Hp j | Evans, N.R., Bond, H.E., Schaefer, G.H., Mason, B.D., Karovska, M., & Tingle, E. | 2013AJ....146...93E |
Evs2013 | +X | AJ 146, 93, 2013 | |
WRH1950a | J j | Wilson, R.H. | 1950AJ.....55..153W |
WRH1950a | +Ma | AJ 55, 153, 1950 | |
WRH1950a | (U and T coded observations per van den Bos, J Obs 34, 85, 1951) | 1951JO.....34...85V |
idgroup | discov | author |
1 | ISM | Ismailov, R.M. |
2 | KRV | Kervella, P., Thevenin, F., & Petr-Gotzens, M.G. |
11 | KRV | Kervella, P., Gallenne, A., Evans, N.R., Szabados, L., Arenouu, F., Merand, A., |
11 | KRV | Proto, Y., Karczmarek, P., Nardetto, N., Gieren, W. & Pietrzynski, G. |
12 | KRV | Kervella, P., Gallenne, A., Evans, N.R., Szabados, L., Arenouu, F., Merand, A., |
12 | KRV | Nardetto, N., Gieren, W. & Pietrzynski, G. |
14 | KRV | Kervella, P., Borgniet, S., de Souza, A.D., Merand, A., Gallenne, A., Rivinius, T., |
14 | KRV | Lacour, S., Carciofi, A., Faes, D.M., Le Bouquin, J.-B., Taormina, M., Pilecki, B., |
14 | KRV | Berger, J.-P., Bendjoya, P., Klement, R., Millour, F., Janot-Pacheco, E., Spang, A. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
19448+2916 | ISM 4 | Aa,Ab | 1988 | 4 | 167 | 0.0 | 7.00 | 8.00 | F2Iab | N | 194448.74+291552.9 |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
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A | Ab | E | F | G | H | |
Ab | pa=168.3° sep=0.04" | |||||
E | pa=291.8° sep=22.02" | pa=291.8° sep=22.04" | ||||
F | pa=16.2° sep=70.29" | pa=16.2° sep=70.33" | pa=34.0° sep=71.59" | |||
G | pa=87.4° sep=66.23" | pa=87.3° sep=66.22" | pa=93.4° sep=86.75" | pa=144.2° sep=79.52" | ||
H | pa=86.4° sep=22.15" | pa=86.3° sep=22.15" | pa=99.1° sep=43.09" | pa=177.8° sep=66.18" | pa=267.8° sep=44.08" | |
I | pa=30.8° sep=40.79" | pa=30.7° sep=40.82" | pa=56.9° sep=49.28" | pa=177.8° sep=32.48" | pa=305.2° sep=55.46" | pa=357.9° sep=33.70" |
Var name | SU Cyg | Coord arcsec 2000 | 194448.74+291552.9 | Mag | 7.03 | Spectral class | F2I (yellow-white) | ||||
PmRA | 0.00 | PmDE | -4.0 | SAO | 87659 | HIP | 97150 | ||||
Tycho2 | 2151-05896-1 | HD | 186688 | HR | 7518 | GC | 27336 | ||||
BD | BD+28 3460 |
Tycho2 | 2151-05896-1 | Pflag | RAmdeg | 296.20306529 | DEmdeg | 29.26469320 | |||||
PmRA | 2.2 | PmDE | -2.4 | E RAmdeg | 4 | E DEmdeg | 4 | ||||
E pmRA | 1.2 | E pmDE | 1.1 | EpRAm | 1991.35 | EpDEm | 1991.46 | ||||
Num | 15 | Q RAmdeg | 0.8 | Q DEmdeg | 0.8 | Q pmRA | 0.7 | ||||
Q pmDE | 0.7 | BTmag | 7.716 | E BTmag | 0.015 | VTmag | 7.028 | ||||
E VTmag | 0.010 | Prox | 248 | TYC | T | HIP | 97150 | ||||
CCDM | RAdeg | 296.20305917 | DEdeg | 29.26469861 | EpRA 1990 | 1.59 | |||||
EpDE 1990 | 1.71 | E RAdeg | 4.4 | E DEdeg | 4.1 | Posflg | |||||
Corr | 0.1 |
SAO | 87659 | DelFlag | RA1950 | PmRA1950 | -0.0001 | ||||||
DE1950 | PmDE1950 | 0 | Vmag | 6.4 | SpType | F2p | |||||
Double code | Source | 70 | CatNum | 27336 | DM | BD+28 3460 | |||||
DMcomp | BDsup | HD | 186688 | M HD | 0 | ||||||
GC | 27336 | RA1950rad | 5.16097559 | DE1950rad | 0.50863795 | PmRA2000 | 0.0001 | ||||
PmDE2000 | -0.002 |
Catalog | H | HIP | 97150 | Proxy | RAhms | 19 44 48.73 | |||||
DEdms | +29 15 52.9 | Vmag | 6.97 | VarFlag | 3 | R Vmag | T | ||||
RAdeg | 296.203 | DEdeg | 29.2647 | AstroRef | Plx | 0.51 | |||||
CCDM | N CCDM | Nsys | Ncomp | 1 | |||||||
MultFlag | Source | Qual | M HIP | ||||||||
Theta | Rho | HD | 186688 | BD | BD+28 3460 | ||||||
CD | CP | Dm number | +28 3460 | VIred | 0.69 | ||||||
SpType | F2Iab: | R SpType | Coord arcsec 2000 | 194448.73+291552.9 |
HIP | 97150 | Sn | 5 | So | 0 | Nc | 1 | ||||
RArad | 5.1697186348 | DErad | 0.51076536 | Plx | 1.27 | PmRA | 0.26 | ||||
PmDE | -3.86 | E RArad | 0.43 | E DErad | 0.61 | E Plx | 0.86 | ||||
E pmRA | 0.56 | E pmDE | 0.85 | Hpmag | 7.0885 | E Hpmag | 0.026 | ||||
SHp | 0.263 | VA | 1 | BV | 0.65 | E BV | 0.026 | ||||
VI | 0.71 |
Coord arcsec 2000 | 194448.74+291552.9 | Mag | 8 | Spectral class | B8V (blue-white) | Calc delta mag | 1 | ||||
Calc coord | yes |
Coord arcsec 2000 | 194447.18+291601.1 | Mag | 10.54 | PmRA | -1.00 | PmDE | -2.0 | ||||
Calc delta mag | 3.54 | Calc coord | yes |
Coord arcsec 2000 | 194450.24+291700.4 | Mag | 10.88 | PmRA | 7.00 | PmDE | -9.0 | ||||
Calc delta mag | 3.88 | Calc coord | yes |
Coord arcsec 2000 | 194453.80+291555.9 | Mag | 10.21 | PmRA | 3.00 | PmDE | -5.0 | ||||
Tycho2 | 2151-04816-1 | HD | 332545 | Calc delta mag | 3.21 | Calc coord | yes |
Tycho2 | 2151-04816-1 | Pflag | RAmdeg | 296.22721462 | DEmdeg | 29.26556649 | |||||
PmRA | 1.8 | PmDE | -3.2 | E RAmdeg | 37 | E DEmdeg | 25 | ||||
E pmRA | 1.9 | E pmDE | 1.8 | EpRAm | 1987.08 | EpDEm | 1989.80 | ||||
Num | 4 | Q RAmdeg | 1.0 | Q DEmdeg | 1.2 | Q pmRA | 1.0 | ||||
Q pmDE | 1.2 | BTmag | 11.443 | E BTmag | 0.073 | VTmag | 10.211 | ||||
E VTmag | 0.040 | Prox | 759 | TYC | T | HIP | |||||
CCDM | RAdeg | 296.22720944 | DEdeg | 29.26557361 | EpRA 1990 | 1.50 | |||||
EpDE 1990 | 1.81 | E RAdeg | 38.2 | E DEdeg | 25.4 | Posflg | |||||
Corr | 0.1 |
Coord arcsec 2000 | 194450.43+291554.3 | Mag | 16.9 | Calc delta mag | 9.9 | Calc coord | yes |
Coord arcsec 2000 | 194450.33+291628.0 | Mag | 19.2 | Calc delta mag | 12.2 | Calc coord | yes |