Coord 2000 | 20396+1555 | Discov num | HJ 1554 | Comp | AC | Coord arcsec 2000 | 20 39 38.25 +15 54 43.4 | ||||
Date first | 1828 | Date last | 2017 | Obs | 15 | ||||||
Pa first | 278 | Pa last | 277.4 | P.A. Now (θ) | 277.4° | ||||||
Sep first | 35.0 | Sep last | 48.363 | Sep. Now (ρ) | 48.363" | ||||||
Mag pri | 3.86 | Mag sec | 11.90 | delta mag (ΔM) | 8.04 | Spectral class | B9IV (blue-white) | ||||
Pri motion ra | +053 | Sec motion ra | +033 | ||||||||
Pri motion dec | +010 | Sec motion dec | -005 | ||||||||
Notes | N (See Notes) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 106357 | 20 39 38 +15 54 43 | WCK 2 Aa,Ab | 2019 | 92 | 289 | 0.1 | 3.86 | 6.43 | 2.57 | Y | ||
Show | 106357 | 20 39 38 +15 54 43 | CIA 23 Ab1,2 | 2019 | 11 | 250 | 0.0 | 3.86 | 6.43 | 2.57 | |||
Show | 106357 | 20 39 38 +15 54 43 | BU 298 AB | 2015 | 11 | 233 | 35.5 | 3.86 | 13.40 | 9.54 | |||
Show | Sualocin | 106357 | 20 39 38 +15 54 43 | HJ 1554 AC | 2017 | 15 | 277 | 48.4 | 3.86 | 11.90 | 8.04 | <=== | |
Show | 106357 | 20 39 38 +15 54 43 | BU 298 AD | 2015 | 13 | 160 | 45.4 | 3.86 | 12.90 | 9.04 | |||
Show | 106357 | 20 39 38 +15 54 43 | BU 298 AE | 2015 | 12 | 304 | 57.2 | 3.86 | 12.60 | 8.74 | |||
Show | 106357 | 20 39 38 +15 54 43 | BU 298 AF | 2015 | 12 | 118 | 72.2 | 3.86 | 10.70 | 6.84 |
Common name | Sualocin | Var name | NSV13207 Del | Constellation | Delphinus | SAO | 106357 | ||||
HIP | 101958 | Tycho2 | 1633-02442-1 | Gaia DR2 | 1810711143450256128 | HD | 196867 | ||||
HR | 7906 | GC | 28780 | ADS | 14121 | BD | BD+15 4222 | ||||
Bayer | Alpha Delphini | Bayer name | Alp Del | Flamsteed | 9 Delphini | Flamsteed name | 9 Del | ||||
FK5 | 774 | Distance | 77.82 | Distance ly | 253.85 | Bayer greek | α Del |
Other names | SVALOCIN, Scalovin |
Meaning | 'Nicolaus' in reverse |
discov_num | notes | refcode |
WCK 2 | Aa,Ab: alp Del = 9 Del = Sualocin. Spectroscopic binary now resolved by | |
interferometry. | ||
Uniform disk diameter 0.407 +/- 0.022 mas, | ||
Limb darkened diameter 0.420 +/- 0.022 mas, | ||
Teff = 13300 +/- 1300 K based on LDD. | ||
Radius is 3.02 +/- 0.19 \rsun. | CIA2019a | |
Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and | ||
spectroscopic masses 6.43 +/- 3.52, 4.55, and 2.82 Msun, respectively. | Mlk2012 |
refcode | metd | author | reference |
CIA2019a | not j | Gordon, K.D., Gies, D.R., Schaefer, G.H., Huber, D. & Ireland, M. | 2019ApJ...873...91G |
CIA2019a | ApJ 869, 37, 2018 | ||
Mlk2012 | not - | Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. | 2012A&A...546A..69M |
Mlk2012 | A&A 546, A69, 2012 |
idgroup | discov | author |
1 | BU | Burnham, S.W. (BU 1 - 81) |
179 | HJ | Herschel, J.F.W. |
228 | WCK | Wickes, W.C. & Dicke, R.H. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
20396+1555 | HJ 1554 | AC | 2002 | 9 | 277 | 47.3 | 3.86 | 11.90 | B9IV | D | 203938.25+155443.4 |
20396+1555 | HJ 1554 | AC | 2008 | 10 | 277 | 47.8 | 3.86 | 11.90 | B9IV | D | 203938.25+155443.4 |
20396+1555 | HJ 1554 | AC | 2015 | 14 | 278 | 48.3 | 3.86 | 11.90 | B9IV | N | 203938.25+155443.4 |
20396+1555 | HJ 1554 | AC | 2017 | 15 | 277 | 48.4 | 3.86 | 11.90 | B9IV | N | 203938.25+155443.4 |
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 | Ab2 | B | C | D | E | |
Ab | pa=0.0° sep=0.00" | ||||||
Ab2 | pa=249.0° sep=0.00" | pa=249.0° sep=0.00" | |||||
B | pa=231.6° sep=34.61" | pa=231.6° sep=34.61" | pa=231.6° sep=34.60" | ||||
C | pa=277.7° sep=46.54" | pa=277.7° sep=46.54" | pa=277.7° sep=46.54" | pa=325.6° sep=33.60" | |||
D | pa=160.4° sep=45.17" | pa=160.4° sep=45.17" | pa=160.4° sep=45.17" | pa=116.5° sep=47.23" | pa=128.5° sep=78.32" | ||
E | pa=304.5° sep=55.73" | pa=304.5° sep=55.73" | pa=304.5° sep=55.73" | pa=340.5° sep=56.31" | pa=0.5° sep=25.37" | pa=320.5° sep=96.05" | |
F | pa=118.5° sep=70.05" | pa=118.5° sep=70.05" | pa=118.5° sep=70.06" | pa=97.7° sep=89.48" | pa=110.2° sep=114.75" | pa=78.9° sep=47.29" | pa=121.2° sep=125.61" |
Common name | Sualocin | Meaning | 'Nicolaus' in reverse | Other names | SVALOCIN, Scalovin | Coord arcsec 2000 | 203938.25+155443.4 | ||||
Mag | 3.86 | Spectral class | B9IV (blue-white) | PmRA | 53.00 | PmDE | 10.0 | ||||
SAO | 106357 | HIP | 101958 | Tycho2 | 1633-02442-1 | HD | 196867 | ||||
HR | 7906 | GC | 28780 | ADS | 14121 | BD | BD+15 4222 | ||||
Bayer | Alpha Delphini | Bayer name | Alp Del | Flamsteed | 9 Delphini | Flamsteed name | 9 Del | ||||
FK5 | 774 |
Tycho2 | 1633-02442-1 | Pflag | X | RAmdeg | DEmdeg | ||||||
PmRA | PmDE | E RAmdeg | E DEmdeg | ||||||||
E pmRA | E pmDE | EpRAm | EpDEm | ||||||||
Num | Q RAmdeg | Q DEmdeg | Q pmRA | ||||||||
Q pmDE | BTmag | 3.703 | E BTmag | 0.014 | VTmag | 3.753 | |||||
E VTmag | 0.009 | Prox | 999 | TYC | T | HIP | 101958 | ||||
CCDM | AG | RAdeg | 309.90940361 | DEdeg | 15.91205361 | EpRA 1990 | 1.71 | ||||
EpDE 1990 | 1.43 | E RAdeg | 3.3 | E DEdeg | 3.4 | Posflg | P | ||||
Corr | -0.1 |
SAO | 106357 | DelFlag | RA1950 | PmRA1950 | 0.0045 | ||||||
DE1950 | PmDE1950 | 0 | Vmag | 3.9 | SpType | B8 | |||||
Double code | Source | 74 | CatNum | 774 | DM | BD+15 4222 | |||||
DMcomp | BDsup | HD | 196867 | M HD | 0 | ||||||
GC | 28780 | RA1950rad | 5.39880325 | DE1950rad | 0.27461931 | PmRA2000 | 0.0046 | ||||
PmDE2000 | -0.002 |
Catalog | H | HIP | 101958 | Proxy | H | RAhms | 20 39 38.25 | ||||
DEdms | +15 54 43.4 | Vmag | 3.77 | VarFlag | R Vmag | G | |||||
RAdeg | 309.909 | DEdeg | 15.9121 | AstroRef | * | Plx | 13.55 | ||||
CCDM | 20396+1555 | N CCDM | I | Nsys | 1 | Ncomp | 2 | ||||
MultFlag | C | Source | Qual | A | M HIP | AG | |||||
Theta | 221 | Rho | 0.218 | HD | 196867 | BD | BD+15 4222 | ||||
CD | CP | Dm number | +15 4222 | VIred | -0.01 | ||||||
SpType | B9V | R SpType | Coord arcsec 2000 | 203938.25+155443.4 |
HIP | 101958 | Sn | 55 | So | 3 | Nc | 2 | ||||
RArad | 5.4089393078 | DErad | 0.2777177099 | Plx | 12.85 | PmRA | 53.82 | ||||
PmDE | 8.47 | E RArad | 0.34 | E DErad | 0.29 | E Plx | 0.44 | ||||
E pmRA | 0.43 | E pmDE | 0.31 | Hpmag | 3.765 | E Hpmag | 0.0005 | ||||
SHp | 0.005 | VA | 0 | BV | -0.057 | E BV | 0.005 | ||||
VI | -0.01 |
Ccdm | 20396+1555 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | 2.28 | DDEs | -16.5 | ||||||
R dRAs | 82 | Year | Theta | Rho | |||||||
Obs | 7 | Vmag | 3.9 | Sp | B8 | PmNote | * | ||||
PmRA | 53 | PmDE | 10 | Dm number | +15 4222 | Cat1 | BD | ||||
Name2 | 106357 | Cat2 | SAO | HD | 196867 | M HD | |||||
ADS BDS | A14121 | M ADS BDS | N IDS | IDS | 20350N1534A | ||||||
HIC | 101958 |
Coord arcsec 2000 | 203938.25+155443.4 | Coord calc | 203938.24+155443.4 | Mag | 3.86 | Mag composta | 6.43 | ||||
Spectral class | B9IV (blue-white) | PmRA | 66.00 | PmDE | -2.0 | Calc delta mag | 2.57 |
Coord arcsec 2000 | 203938.25+155443.4 | Mag | 6.43 | Calc delta mag | 2.57 | Calc coord | yes |
Coord arcsec 2000 | 203936.37+155421.9 | Mag | 13.4 | Calc delta mag | 9.54 | Calc coord | yes |
Ccdm | 20396+1555 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | BU 298 | DRAs | DDEs | |||||||
R dRAs | Year | 1891 | Theta | 224 | Rho | 29.5 | |||||
Obs | 4 | Vmag | 13.4 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A14121 | M ADS BDS | N IDS | IDS | 20350N1534B | ||||||
HIC |
Coord arcsec 2000 | 203935.05+155449.6 | Mag | 11.9 | PmRA | 33.00 | PmDE | -5.0 | ||||
Calc delta mag | 8.04 | Calc coord | yes |
Ccdm | 20396+1555 | RComp | Comp | C | Note1 | ||||||
Note2 | Discov num | HJ 1554 | DRAs | DDEs | |||||||
R dRAs | Year | 1878 | Theta | 279 | Rho | 43.4 | |||||
Obs | 6 | Vmag | 11.9 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A14121 | M ADS BDS | N IDS | IDS | 20350N1534C | ||||||
HIC |
Coord arcsec 2000 | 203939.30+155400.8 | Mag | 12.9 | Calc delta mag | 9.04 | Calc coord | yes |
Ccdm | 20396+1555 | RComp | Comp | D | Note1 | ||||||
Note2 | Discov num | BU 298 | DRAs | DDEs | |||||||
R dRAs | Year | 1959 | Theta | 155 | Rho | 46.5 | |||||
Obs | 6 | Vmag | 12.9 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A14121 | M ADS BDS | N IDS | IDS | 20350N1534D | ||||||
HIC |
Coord arcsec 2000 | 203935.07+155515.0 | Mag | 12.6 | Calc delta mag | 8.74 | Calc coord | yes |
Ccdm | 20396+1555 | RComp | Comp | E | Note1 | ||||||
Note2 | Discov num | BU 298 | DRAs | DDEs | |||||||
R dRAs | Year | 1959 | Theta | 306 | Rho | 54.5 | |||||
Obs | 5 | Vmag | 12.6 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A14121 | M ADS BDS | N IDS | IDS | 20350N1534E | ||||||
HIC |
Coord arcsec 2000 | 203942.52+155409.9 | Mag | 10.7 | PmRA | -4.00 | PmDE | -8.0 | ||||
Calc delta mag | 6.84 | Calc coord | yes |
Ccdm | 20396+1555 | RComp | Comp | F | Note1 | ||||||
Note2 | Discov num | BU 298 | DRAs | DDEs | |||||||
R dRAs | Year | 1911 | Theta | 115 | Rho | 79.4 | |||||
Obs | 4 | Vmag | 10.7 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A14121 | M ADS BDS | N IDS | IDS | 20350N1534F | ||||||
HIC |