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VizieR

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J/A+AS/94/399/table1 Absolute fluxes and distances of PN (Cahn+, 1992)
Optical fluxes of galactic planetary nebula. (779 rows)
  Name=IC 4997
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ColumnValue  Explain   (UCD)
_RAJ200020 20 08.741 "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+16 43 53.71 "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)
_RAB195020 17 51.369 "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+16 34 22.56 "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)
_Glon058.329676 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-10.978881 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)
120recno 120  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

NameIC 4997  (i) PN name
n_Name    [pHS*] Note on Name (Note G1)   
PK058-10 1  PK number
Te 1.88 10-4K Electron temperature
HeIII/HeI 0.000   HeIII/HeI ratio (Note G2)   
He/H 0.139   He/H ratio (Note G2)   
log(FHb)-10.53 [mW/m2] Hβ flux (Note G2)   
e_log(FHb) 0.02 [mW/m2] rms uncertainty on log(FHb)
r_log(FHb)K2,O  References for Hβ data, in refs.dat file
I(HeII) 0.00   Average intensity of He II λ4686, on scale I(Hβ)=100 (Note G2)   
e_I(HeII)    rms uncertainty on I(HeII)
r_I(HeII)AKSJ  References for He II λ4686 data, in refs.dat file

SimbadSimbad  ask the Simbad data-base about this object
_RA305.0364 deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
_DE+16.7316 deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)
J/A+AS/94/399/table2 Absolute fluxes and distances of PN (Cahn+, 1992)
*Radio flux observations and radio and optical extinctions of galactic planetary nebulae. (778 rows)
  Name=IC 4997
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ColumnValue  Explain   (UCD)
120recno 120  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

NameIC 4997  PN name
n_Name   Note on Name (Note G1)   
nu 5.0000 GHz Frequency
F(nu) 0.0870 Jy Flux density at nu frequency
e_F(nu) 0.00800 Jy rms uncertainty on F(nu)dnu
n_F(nu)    [:] : For Bl 2-1, Eν=K.011, modified in 0.011
r_F(nu)MAII,IS,TT  References for nu data, in refs.dat file
F(5) 0.087 Jy Flux density at 5GHz (Note G2)   
cr-0.18   Radio extinction constant (G2) (Note 1)   
n_cr    [E] E: Err, no data
calpha 1.070   Optical extinction constant (G2) (Note 2)   
e_calpha 0.46   rms uncertainty on calpha
r_calphaO,AKSJ  References for alpha data, in refs.dat file
J/A+AS/94/399/table4 Absolute fluxes and distances of PN (Cahn+, 1992)
*Distances, optical depth, and radii of galactic planetary nebulae. (780 rows)
  Name=IC 4997
Post annotation about this record
ColumnValue  Explain   (UCD)
120recno 120  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

NameIC 4997  PN name
n_Name   Note on Name (Note G1)   
PK058-10 1  PK number
l_RadAng   Limit flag on RadAng
RadAng 1.00 arcsec Angular radius
n_RadAng    [:] : For Vy2-1, ?.9 modified in 1.9
Fb(5) 1.225 Jy Equivalent 5GHz radio flux, derived from Hβ
n_Fb(5)    [E] E: Err, no data
F(5) 0.0870 Jy Radio flux at 5GHz
n_F(5)    [E] E: Err, no data
Tau 1.66   Optical depth
n_Tau    [E] E: Err, no data
Dist 2547 pc Distance
Rad 0.012 pc Radius in pc
  
elapse time 0

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