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VizieR

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II/361/mdfc-v10 MDFC Version 10 (Cruzalebes+, 2019)
Mid-infrared stellar Diameters and Fluxes compilation Catalogue (MDF), version 10 (465857 rows)
  recno=2304
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ColumnValue  Explain   (UCD)
_RAJ200022 57 27.980000 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+20 46 07.79100 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195022 55 01.109994 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+20 30 04.36115 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon090.062630543 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-34.727259734 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
2304recno 2304  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Name* 51 Peg  SIMBAD main identifier (Name) (meta.id;meta.main)
SpTypeG2IV  SIMBAD spectral type (SpType) (src.spType)
RAJ200022 57 27.9800 "h:m:s" (i) Right ascension (J2000)(RAJ2000) (pos.eq.ra;meta.main)
DEJ2000+20 46 07.791 "d:m:s" (i) Declination (DEJ2000) (pos.eq.dec;meta.main)
Dist 15.4613640 pc Estimed distance from Bailer-Jones et al. (2018, Cat. I/347) (distance) (pos.distance;pos.heliocentric)
Teff-MIDI  K Estimate of effective temperature from VLTI/ MIDI (teff_midi) (phys.temperature.effective)
Teff-GAIA 5830.00 K Estimate of effective temperature from Gaia DR2 (Cat. I/345) (from Apsis-Priam, see Andrae et al., 2018A&A...616A...8A) (teff_gaia) (Note 1)   (phys.temperature.effective)
Comp   Components when more than 2 from WDS (Comp) (meta.code.multip)
Mean-sep 2.90000000 arcsec Mean separation from WDS (mean_sep) (pos.angDistance;src.orbital)
mag1 6.80 mag Magnitude of First Component from WDS (mag1) (phot.mag;em.opt)
mag216.80 mag Magnitude of Second Component from WDS (mag2) (phot.mag;em.opt)
Diam-MIDI  mas Fitted angular diameter from VLTI/MIDI (diam_midi) (phys.angSize;meta.modelled)
e_Diam-MIDI  mas Error on VLTI/MIDI angular diameter (ediammidi) (stat.error)
Diam-Cohen  mas Fitted angular diameter from Cohen et al. (diam_cohen) (phys.angSize;meta.modelled)
e_Diam-Cohen  mas Error on Cohen's angular diameter (ediamcohen) (stat.error)
Diam-GAIA 6.978093e-01 mas Estimate of angular diameter from Gaia DR2 (diam_gaia) (Note 1)   (phys.angSize)
LDD-meas 0.650 mas Measured limb-darkened disk angular diameter from JMDC (LDD_meas) (phys.angSize)
e_LDD-meas 0.013 mas Error on measured angular diameter from JMDC (ediammeas) (stat.error)
UDD-meas 0.624 mas Measured uniform-disk angular diameter from JMDC (UDD_meas) (phys.angSize)
Band-measH   Text describing the wavelength or band of the angular diameter measured from JMDC (band_meas) (em.wl)
LDD-est 0.649 mas Estimated limb-darkened disk angular diameter from JSDC_V2 (LDD_est) (phys.angSize)
e_LDD-est 0.064 mas Error on estimated angular diameter from JSDC_V2 (ediamest) (stat.error)
UDDL-est 0.642 mas Estimated uniform-disk angular diameter in L from JSDC_V2 (UDDL_est) (phys.angSize;em.IR.3-4um)
UDDM-est 0.643 mas Estimated uniform-disk angular diameter in M from JSDC_V2 (UDDM_est) (phys.angSize;em.IR.4-8um)
UDDN-est 0.646 mas Estimated uniform-disk angular diameter in N from JSDC_V2 (UDDN_est) (phys.angSize;em.IR.8-15um)
Jmag 4.655 mag 2MASS J magnitude (1.25 micron) (Jmag) (phot.mag;em.IR.J)
Hmag 4.234 mag 2MASS H magnitude (1.65 micron) (Hmag) (phot.mag;em.IR.H)
Kmag 3.911 mag 2MASS Ks magnitude (2.17 micron) (Kmag) (phot.mag;em.IR.K)
W4mag 3.904 mag AllWISE W4 magnitude (22.1 micron) (W4mag) (phot.flux.density;em.IR.15-30um)
CalFlag0   [0/7] Confidence flag for using this star as a calibrator in Opt. Interf. experiments from JSDC_V2 (CalFlag) (Note 2)   (meta.code.qual)
IRflag0   [0/7] Confidence flag indicating the probable presence of extended features at IR wavelengths (IRflag) (Note 3)   (meta.code.qual)
nb-Lflux3   Number of flux values reported in band L (nb_Lflux) (meta.number)
med-Lflux 8.688838e+00 Jy Median flux value in band L (med_Lflux) (phot.flux.density;em.IR.3-4um)
disp-Lflux 1.7032106e-01 Jy Dispersion of flux values in band L (disp_Lflux) (stat.error)
nb-Mflux2   Number of flux values reported in band M (nb_Mflux) (meta.number)
med-Mflux 6.291995e+00 Jy Median flux value in band M (med_Mflux) (phot.flux.density;em.IR)
disp-Mflux 1.4906721e+00 Jy Dispersion of flux values in band M (disp_Mflux) (stat.error)
nb-Nflux4   Number of flux values reported in band N (nb_Nflux) (meta.number)
med-Nflux 1.325879e+00 Jy Median flux value in band N (med_Nflux) (phot.flux.density;em.IR)
disp-Nflux 2.4587905e-01 Jy Dispersion of flux values in band N (disp_Nflux) (stat.error)
Lcorflux30 8.681211e+00 Jy Uniform-disk (UD) correlated flux in L for 30-m base (Lcorflux_30) (phot.flux.density;em.IR.3-4um)
Lcorflux100 8.604341e+00 Jy Uniform-disk (UD) correlated flux in L for 100-m base (Lcorflux_100) (phot.flux.density;em.IR.3-4um)
Lcorflux130 8.546358e+00 Jy Uniform-disk (UD) correlated flux in L for 130-m base (Lcorflux_130) (phot.flux.density;em.IR.3-4um)
Mcorflux30 6.289048e+00 Jy Uniform-disk (UD) correlated flux in M for 30-m base (Mcorflux_30) (phot.flux.density;em.IR)
Mcorflux100 6.259311e+00 Jy Uniform-disk (UD) correlated flux in M for 100-m base (Mcorflux_100) (phot.flux.density;em.IR)
Mcorflux130 6.236824e+00 Jy Uniform-disk (UD) correlated flux in M for 130-m base (Mcorflux_130) (phot.flux.density;em.IR)
Ncorflux30 1.325748e+00 Jy Uniform-disk (UD) correlated flux in N for 30-m base (Ncorflux_30) (phot.flux.density;em.IR)
Ncorflux100 1.324424e+00 Jy Uniform-disk (UD) correlated flux in N for 100-m base (Ncorflux_100) (phot.flux.density;em.IR)
Ncorflux130 1.323421e+00 Jy Uniform-disk (UD) correlated flux in N for 130-m base (Ncorflux_130) (phot.flux.density;em.IR)

Simbad* 51 Peg  ask the Simbad data-base about this object (meta.ref.url)
  
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