Coord 2000 | 13100+1732 | Discov num | STF1728 | Comp | AB,C | Coord arcsec 2000 | 13 09 59.28 +17 31 46.0 | ||||
Date first | 1851 | Date last | 2014 | Obs | 14 | ||||||
Pa first | 322 | Pa last | 349.3 | P.A. Now (θ) | 349.3° | ||||||
Sep first | 135.6 | Sep last | 84.77 | Sep. Now (ρ) | 84.77" | ||||||
Mag pri | 4.43 | Mag sec | 11.45 | delta mag (ΔM) | 7.02 | Spectral class | F5V (yellow-white) | ||||
Pri motion ra | -433 | Sec motion ra | -012 | ||||||||
Pri motion dec | +141 | Sec motion dec | -001 | ||||||||
Notes | N L (See Notes, Linear solution) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | Diadem | 100443 | 13 09 59 +17 31 46 | STF 1728 AB | 2020 | 664 | 195 | 0.5 | 4.85 | 5.53 | 0.68 | Y | |
Show | Alp Com | 100443 | 13 09 59 +17 31 46 | STF 1728 AB,C | 2014 | 14 | 349 | 84.8 | 4.43 | 11.45 | 7.02 | <=== |
Name | Alp Com | Var name | NSV6116 Com | Constellation | Coma Berenices | SAO | 100443 | ||||
HIP | 64241 | Tycho2 | 1454-01134-1 | HD | 114378 | HR | 4968 | ||||
GC | 17833 | ADS | 8804 | GL | Gl 501A | BD | BD+18 2697 | ||||
Bayer | Alpha Comae Berenices | Bayer name | Alp Com | Flamsteed | 42 Comae Berenices | Flamsteed name | 42 Com | ||||
Distance | 17.83 | Distance ly | 58.16 | Bayer greek | α Com |
discov_num | notes | refcode |
STF1728 | 42 Com = alp Com = Diadem. | Baz1964 |
AB: Additional notes may be found in Madler (1844). | Mad1844 | |
AB. A preliminary orbit for this edge-on pair indicates that one of | ||
the F5 V stars may partially eclipse the other in early 1990. | ||
Components reversed rel std sol's, e.g. in Hartkopf et al. | Hrt1989 | |
(1989). Their preliminary orbit for this edge-on pair indicated that | ||
one F5V star may have partially eclipsed the other in early 1990. | ||
See Baize & Petit (1989) catalog of doubles with variable component. | Baz1989d | |
1997.1179: The magnitude difference of the system is listed in the WDS | ||
as 0.0. Our reduction does not give the quadrant unambiguously, so we | ||
adopt the quadrant that gives a position angle consistent with | ||
previous measures in the WDS. | Hor1997 | |
Spectral types amd masses of components assigned by ten Brummelaar et | ||
al., based on adaptive optics observations. | TtB2000 | |
Calculated mass sum is 2.45 +/- 0.18 Msun, reasonable for two F5 | ||
dwarfs. Closest approach of about 0.32 mas is predicted around 2015 | ||
Jan 24 (to within about a week), eclipse duration ~1.5 days. | Mut2010b | |
Muterspaugh et al. (2015) revised their orbit, following discovery of | Mut2015 | |
three old measures whose theta measures had incorrect quadrants, which | ||
had led to an incorrect prediction of the eclipse timing. |
refcode | metd | author | reference |
Baz1964 | Ma - | Baize, P. | 1964JO.....47....1B |
Baz1964 | +orb | J. Obs. 47, 1-26, 1964 | |
Baz1989d | - | Baize, P. & Petit, M. | 1989A&AS...77..497B |
Baz1989d | A&AS 77, 497, 1989 | ||
Hor1997 | S j | Horch, E.P., Ninkov, Z., & Slawson, R. | 1997AJ....114.2117H |
Hor1997 | AJ 114, 2117, 1997 | ||
Hrt1989 | orb - | Hartkopf, W.I., McAlister, H.A., & Franz, O.G. | 1989AJ.....98.2275B |
Hrt1989 | AJ 98, 1014, 1989 | ||
Mad1844 | Ma - | Maedler, J.H. | . |
Mad1844 | Dorpat Observations 11, 3, 1844 | ||
Mut2010b | Kp - | Muterspaugh, M.W., Hartkopf, W.I., Lane. B.F., O'Connell, J., Williamson, M., | 2010AJ....140.1623M |
Mut2010b | Kulkarni, S.R., Konacki, M., Burke, B.F., Colavita, M.M., Shao, M., & | ||
Mut2010b | Wiktorowicz, S.J. | ||
Mut2010b | AJ 140, 1623, 2010 | ||
Mut2015 | Kf j | Muterspaugh, M.W., Mijngaarden, M.J.P., Henrichs, H.F., Lane, B.F., Hartkopf, W., | 2015AJ....150..140M |
Mut2015 | +Kn | Henry, G.W., Schaefer, G.H., Farrington, C., Hummel, C.A., & Zavala, R.T. | |
Mut2015 | +orb | AJ 150, 140, 2015 | |
TtB2000 | Ac j | ten Brummelaar, T.A., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr., | 2000AJ....119.2403T |
TtB2000 | Turner, N.H., Hartkopf, W.I., & Bagnuolo, W.G., Jr. | ||
TtB2000 | AJ 119, 2403, 2000 (magnitude differences from Mt. Wilson AO) |
idgroup | discov | author |
1 | STF | Struve, F.G.W. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
13100+1732 | STF1728 | AB,C | 1998 | 12 | 345 | 88.7 | 5.20 | 10.20 | F5V | N D | 130959.55+173144.8 |
13100+1732 | STF1728 | AB,C | 2001 | 13 | 346 | 87.2 | 5.20 | 10.20 | F5V | N D | 130959.55+173144.8 |
13100+1732 | STF1728 | AB,C | 2014 | 14 | 349 | 84.8 | 5.20 | 10.20 | F5V | N | 130959.55+173144.8 |
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 | B | |
B | pa=193.9° sep=0.46" | |
C | pa=349.8° sep=84.64" | pa=349.9° sep=85.06" |
Common name | Diadem | Meaning | tiara | Other names | DIADEMA | Coord arcsec 2000 | 130959.28+173146.0 | ||||
Mag | 4.85 | Spectral class | F5V (yellow-white) | PmRA | -433.00 | PmDE | 141.0 | ||||
SAO | 100443 | HIP | 64241 | Tycho2 | 1454-01134-1 | HD | 114378 | ||||
HR | 4968 | GC | 17833 | BD | BD+18 2697 | Bayer | Alpha Comae Berenices | ||||
Bayer name | Alp Com | Flamsteed | 42 Comae Berenices | Flamsteed name | 42 Com |
Tycho2 | 1454-01134-1 | Pflag | RAmdeg | 197.49702877 | DEmdeg | 17.52944436 | |||||
PmRA | -430.1 | PmDE | 137.8 | E RAmdeg | 4 | E DEmdeg | 4 | ||||
E pmRA | 0.9 | E pmDE | 0.9 | EpRAm | 1991.34 | EpDEm | 1991.24 | ||||
Num | 17 | Q RAmdeg | 1.5 | Q DEmdeg | 1.2 | Q pmRA | 1.6 | ||||
Q pmDE | 1.2 | BTmag | 4.915 | E BTmag | 0.014 | VTmag | 4.427 | ||||
E VTmag | 0.009 | Prox | 999 | TYC | HIP | 64241 | |||||
CCDM | RAdeg | 197.49807139 | DEdeg | 17.52912194 | EpRA 1990 | 1.68 | |||||
EpDE 1990 | 1.58 | E RAdeg | 3.6 | E DEdeg | 3.8 | Posflg | P | ||||
Corr | 0.2 |
SAO | 100443 | DelFlag | RA1950 | PmRA1950 | -0.0302 | ||||||
DE1950 | PmDE1950 | 0.131 | Vmag | 4.5 | SpType | F5 | |||||
Double code | Source | 70 | CatNum | 17833 | DM | BD+18 2697 | |||||
DMcomp | BDsup | HD | 114378 | M HD | 9 | ||||||
GC | 17833 | RA1950rad | 3.43635845 | DE1950rad | 0.31055345 | PmRA2000 | -0.0301 | ||||
PmDE2000 | 0.136 |
Catalog | H | HIP | 64241 | Proxy | RAhms | 13 09 59.55 | |||||
DEdms | +17 31 44.8 | Vmag | 4.32 | VarFlag | R Vmag | G | |||||
RAdeg | 197.498 | DEdeg | 17.5291 | AstroRef | Plx | 69.81 | |||||
CCDM | 13100+1732 | N CCDM | I | Nsys | 1 | Ncomp | 1 | ||||
MultFlag | X | Source | Qual | S | M HIP | ||||||
Theta | Rho | HD | 114378 | BD | BD+18 2697 | ||||||
CD | CP | Dm number | +18 2697 | VIred | 0.53 | ||||||
SpType | F5V | R SpType | Coord arcsec 2000 | 130959.55+173144.8 |
HIP | 64241 | Sn | 1 | So | 2 | Nc | 1 | ||||
RArad | 3.4469925602 | DErad | 0.3059407189 | Plx | 56.1 | PmRA | -433.13 | ||||
PmDE | 141.24 | E RArad | 0.72 | E DErad | 0.64 | E Plx | 0.89 | ||||
E pmRA | 0.7 | E pmDE | 0.51 | Hpmag | 4.4292 | E Hpmag | 0.0008 | ||||
SHp | 0.006 | VA | 0 | BV | 0.455 | E BV | 0.008 | ||||
VI | 0.53 |
Ccdm | 13100+1732 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | -1.23 | DDEs | -11.4 | ||||||
R dRAs | 65 | Year | Theta | Rho | |||||||
Obs | 3 | Vmag | 5.2 | Sp | F5 | PmNote | * | ||||
PmRA | -432 | PmDE | 131 | Dm number | +18 2697 | Cat1 | BD | ||||
Name2 | +17 1350 | Cat2 | AGK2/3 | HD | 114378 | M HD | |||||
ADS BDS | A 8804 | M ADS BDS | N IDS | IDS | 13051N1803A | ||||||
HIC | 64241 |
Coord arcsec 2000 | 130959.27+173145.6 | Mag | 5.53 | Spectral class | F6V (yellow-white) | PmRA | -430.00 | ||||
PmDE | 138.0 | Calc delta mag | 0.68 | Calc coord | yes |
Ccdm | 13100+1732 | RComp | Comp | B | Note1 | * | |||||
Note2 | Discov num | STF1728 | DRAs | DDEs | |||||||
R dRAs | Year | 1827 | Theta | Rho | |||||||
Obs | 99 | Vmag | 5.2 | Sp | F5 | PmNote | |||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | 114379 | M HD | |||||||
ADS BDS | A 8804 | M ADS BDS | N IDS | IDS | 13051N1803B | ||||||
HIC | 64241 |
Coord arcsec 2000 | 130958.23+173309.3 | Mag | 11.45 | PmRA | -12.00 | PmDE | -1.0 | ||||
Calc delta mag | 6.6 | Calc coord | yes |
Ccdm | 13100+1732 | RComp | Comp | C | Note1 | ||||||
Note2 | Discov num | STF1728 | DRAs | -2.22 | DDEs | 71.8 | |||||
R dRAs | 65 | Year | 1923 | Theta | 330 | Rho | 110.3 | ||||
Obs | 6 | Vmag | 10.2 | Sp | PmNote | ||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A 8804 | M ADS BDS | N IDS | IDS | 13051N1803C | ||||||
HIC |