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VizieR

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J/ApJS/218/23/table4 Fermi LAT third source catalog (3FGL) (Acero+, 2015)
LAT 4-year catalog (3034 unique 3FGL sources) (4984 rows)
  recno=3963
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ColumnValue  Explain   (UCD)
_RAJ200018 41 12.24 "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+29 10 58.8 "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)
_RAB195018 39 15.15 "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+29 08 03.8 "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)
_Glon058.44109 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+14.89351 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)
3963recno 3963  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

3FGLJ1841.2+2910  (i) The 3FGL name (1) (linked to all data for this 3FGL source (tables 4 and 8)) (Note)   (meta.id;meta.main)

Na 1  Number of γ-ray association(s) for this 3FGL (meta.number)

RAJ2000280.301 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
DEJ2000+29.183 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
GLON 58.442 deg Galactic longitude (pos.galactic.lon)
GLAT 14.893 deg Galactic latitude (pos.galactic.lat)
amaj 0.048 deg [0.005/1.1] 95% confidence error ellipse semimajor axis (phys.angSize.smajAxis;pos.errorEllipse)
amin 0.043 deg [0.005/0.6] 95% confidence error ellipse semiminor axis (phys.angSize.sminAxis;pos.errorEllipse)
phi-34 deg [-90/90] Position angle φ of error ellipse (East of North) (pos.posAng)
Sig 8.4   [4/1049] Significance (Note 2)   (stat.fit.goodness)
F35 0.4 10-5/m2/s [0/1298] Photon flux summed over 3 bands 1-100GeV (10–9ph/cm2/s) (phot.count;em.gamma.hard)
e_F35 0.1 10-5/m2/s [0/3] The 1σ uncertainty in F35 (stat.error)
S25 6.0 fW/m2 [1.7/8932] Energy flux for 100MeV-100GeV from power-law fit (10–12erg/s/cm2) (phot.flux.density;em.gamma.hard)
e_S25 1.3 fW/m2 [0.4/26] The 1σ uncertainty in S25 (stat.error)
Gamma 1.57   [1.1/5.8] Photon power-law index Γ for 100MeV-100GeV (meta.code;spect.index)
e_Gamma 0.17   [0.01/1.1] 1σ uncertainty in Gamma (stat.error)
ModPL  Spectral model used to fit the energy spectrum (PL, EC or LP) (Note 3)   (instr.setup;meta.modelled)
Var    [T] Variability flag, T=true (Note 4)   (meta.code;src.var)
Flag   Analysis flag(s); see Table 3 (meta.code.error)
Assoc1FHL J1841.1+2914  The γ-ray association (5) (linked to SIMBAD object) (Note)   (meta.id.assoc)
TeV    [EP] Extended or Point-like source (Note 6)   (meta.code)
Classbcu  Astrophysical class of source (Note 7)   (src.class)
IDMG3 J184126+2910  Designator of identified or associated source (8) (linked to SIMBAD object) (Note)   (meta.id.assoc)

Simbad3FGL J1841.2+2910  ask the Simbad data-base about this object (meta.ref.url)
  
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