NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-26 T19:22:31 PDT
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Velocity(km/s): Unconstrained
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Parameters for Distances and Cosmology: Ho= 73.0; Ωmatter = 0.27; Ωvacuum = 0.73;
Derived Quantities use a Redshift corrected to a Reference Frame defined by the 3K CMB

Detailed Information for Object No. 652

INDEX for 4C +50.44
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images
   
9 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
15 Reference(s)   
4 Position data point(s)
1 Association(s)   

ESSENTIAL NOTE for 4C +50.44 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for 4C +50.44 (Back to INDEX)
Object Names Type Object Names Type
4C +50.44RadioSTXS 1817+504 RadioS
WISE J181904.61+503058.5 IrS WB J1819+5030 RadioS
MG4 J181903+5030 RadioSWIBRaLS J1819+5030 G
87GB 181751.8+502945 RadioS10W 244 RadioS
87GB[BWE91] 1817+5029 RadioS[VE75] CL 1817+50 RadioS
[WB92] 1817+5029 RadioS    
NVSS J181904+503104 RadioS    
VLSS J1819.0+5031 RadioS    

COORDINATES for 4C +50.44 (Back to INDEX)

Position Reference:1996AJ....111.1945D

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 274.4646333  50.4948194 18h17m51.512s +50d29m41.35s  6.00E-01  4.00E-01   90
Equatorial (J2000.0) 274.7687439  50.5172390 18h19m04.498s +50d31m02.06s  6.00E-01  4.00E-01   90
Ecliptic   (B1950.0) 280.2130283  73.7822915                              6.00E-01  4.00E-01   97
Ecliptic   (J2000.0) 280.9059673  73.7760045                              6.00E-01  4.00E-01   97
Galactic              78.6767315  25.5679867                              6.00E-01  4.00E-01  168
SuperGalactic         36.2837834  54.4447226                              6.00E-01  4.00E-01  105
Additional detailed measurements with references are also available by clicking below:
4 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for 4C +50.44 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for 4C +50.44 (Back to INDEX)
 N/A 

FOREGROUND GALACTIC EXTINCTION for 4C +50.44 (Back to INDEX)
Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

L a n d o l tS D S SU K I R T
Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
Aλ [mag]0.2000.1680.1270.1000.0700.1960.1530.1060.0790.0580.0330.0210.0140.007
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values:
L a n d o l tS D S SU K I R T
Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
Aλ [mag]0.2460.1950.1500.1210.0880.2330.1720.1250.0940.0670.0410.0260.0170.007


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.190 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for 4C +50.44 (Back to INDEX)
Log (Flux Density S in mJy): 3.892
Frequency                  : 0.178 GHz
Sp. Index (S=A*Freq^Index^):    -1.0 
Description                :                     
Size (arcmin)              :  1.08

NOTE: This information is indicative only. With the exception of the
      redshift they are unreferenced and highly inhomogeneous as to
      their origin. The Radial Velocity (when available) is computed
      from the listed redshift. The remaining values are designed to
      orient the user with a quick-look, overall assessment of the
      general properties of the object in question. They are not
      averages nor are they standardized in any way.
Additional detailed measurements with references are also available by clicking below:
9 photometric data point(s)      

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for 4C +50.44 (Back to INDEX)
 N/A 

EXTERNAL ARCHIVES AND SERVICES for 4C +50.44 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- 4C +50.44SIMBAD (CDS, Strasbourg, France)
Fourth Cambridge Survey -- 4C +50.44VizieR Catalog Query (U.S. mirror, CfA/Harvard)
NRAO/VLA Sky Survey (NVSS)
Texas Survey of radio sources at 365MHz -- TXS 1817+504 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- 4C +50.44GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- 4C +50.44NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 18h19m04.5s, +50d31m02s (J2000)Site/Service
Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
NASA/IPAC Infrared Science Archive (IRSA)
 Size:    Contours (PS)  JPEG  FITS File 
NRAO/VLA Sky Survey (NVSS)
The NRAO Data Archive System





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