Date and Time of the Query: 2019-05-26 T05:18:55 PDT
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You have selected the following parameters to search on:

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

NED results for object 2MASX J21452991+8154537

1 objects found in NED.    


 Row          Object Name                 EquJ2000.0       Object  Velocity/Redshift    Mag./  Separ.               Number of                                 Row 
 No.     (* => Essential Note)       RA               DEC  Type     km/s       z   Qual Filter arcmin Refs Notes Phot Posn Vel/z Diam Assoc Images   Spectra  No. 
1    2MASX J21452991+8154537        21h45m30.9s +81d54m54s G      >30000  0.145700      16.5     ...    14     2   12    2     0    2     0 Retrieve Retrieve 1   

Detailed information for each object

Object No. 1 - 2MASX J21452991+8154537

INDEX for 2MASX J21452991+8154537
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

12 Photometric data point(s) and SED   
Redshift-Independent Distances
14 Reference(s)   
2 Position data point(s)
2 Diameter data point(s)   
2 Note(s)   

ESSENTIAL NOTE for 2MASX J21452991+8154537 (Back to INDEX)

CROSS-IDENTIFICATIONS for 2MASX J21452991+8154537 (Back to INDEX)
Object Names Type Object Names Type
2MASX J21452991+8154537IrS WN B2147.1+8140 RadioS
LQAC 326+081 001 G [SMD2000] B2147+816 G
GRG 2147+816 RadioS[LCF2001] J2145+819 RadioS
LEDA 2785926 G [VCV2001] J214530.0+815455 G
LEDA 2785927 G [VCV2006] J214530.0+815455 G
[WB92] 2147+8139 RadioS[P2016] J214530.83+815455.5 RadioS
NVSS J214530+815455 RadioS    

COORDINATES for 2MASX J21452991+8154537 (Back to INDEX)

Position Reference:2001A&A...374..861S

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 326.8012500  81.6825833 21h47m12.3000s +81d40m57.300s  2.50E-01  6.00E-02    0
Equatorial (J2000.0) 326.3787485  81.9149164 21h45m30.8996s +81d54m53.699s  2.50E-01  6.00E-02  179
Ecliptic   (B1950.0)  69.3408382  69.9346445                              2.50E-01  6.00E-02  104
Ecliptic   (J2000.0)  70.0343541  69.9408803                              2.50E-01  6.00E-02  104
Galactic             116.6421814  21.4236198                              2.50E-01  6.00E-02   43
SuperGalactic         20.5720854  21.5726305                              2.50E-01  6.00E-02  134
Additional detailed measurements with references are also available by clicking below:
2 Position data point(s)


TypeAs PublishedNED HomogenizedFlagReference Code
Activity TypeS2Sy 2...2006A&A...455..773V
1 Detailed Classification(s)

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]0.6770.5660.4280.3390.2350.6620.5160.3570.2650.1970.1110.0700.0470.024
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]0.8740.6940.5330.4300.3120.8290.6100.4420.3350.2380.1450.0930.0590.025

Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.430 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for 2MASX J21452991+8154537 (Back to INDEX)
Helio. Radial Velocity     :     43680 km/s       
Redshift                   :  0.145700            2000A&AS..146..293S
Major Diameter (arcmin)    :      
Minor Diameter (arcmin)    :      
Magnitude and Filter       : 16.5 
Classifications            :                Sy2  

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:
12 photometric data point(s)      2 Diameter data point(s)      

Calculated and Corrected Velocities
V (Heliocentric)           :   43680  km/s                2000A&AS..146..293S
V (Kinematic LSR)          :   43691  km/s                1986MNRAS.221.1023K
V (Galactocentric GSR)     :   43872 +/-      8 km/s      1991RC3.9.C...0000d
V (Local Group)            :   43941 +/-     16 km/s      1996AJ....111..794K
V (3K CMB)                 :   43587 +/-      6 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :   43967 +/-     16 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :   43704 +/-     24 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :   43676 +/-     24 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/- 5 km/sec/Mpc)
D (Galactocentric GSR)     :   601.0 +/-   42.1 Mpc      (m-M) = 38.89 +/- 0.15 mag
D (Local Group)            :   601.9 +/-   42.1 Mpc      (m-M) = 38.90 +/- 0.15 mag
D (3K CMB)                 :   597.1 +/-   41.8 Mpc      (m-M) = 38.88 +/- 0.15 mag
D (Virgo Infall only)      :   602.3 +/-   42.2 Mpc      (m-M) = 38.90 +/- 0.15 mag
D (Virgo + GA only)        :   598.7 +/-   41.9 Mpc      (m-M) = 38.89 +/- 0.15 mag
D (Virgo + GA + Shapley)   :   598.3 +/-   41.9 Mpc      (m-M) = 38.88 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :    2914 pc/arcsec =  2.914 kpc/arcsec = 174.82 kpc/arcmin =  10.49 Mpc/degree
Scale (Local Group)        :    2918 pc/arcsec =  2.918 kpc/arcsec = 175.09 kpc/arcmin =  10.51 Mpc/degree
Scale (3K CMB)             :    2895 pc/arcsec =  2.895 kpc/arcsec = 173.68 kpc/arcmin =  10.42 Mpc/degree
Scale (Virgo Infall only)  :    2920 pc/arcsec =  2.920 kpc/arcsec = 175.20 kpc/arcmin =  10.51 Mpc/degree
Scale (Virgo + GA only)    :    2902 pc/arcsec =  2.902 kpc/arcsec = 174.15 kpc/arcmin =  10.45 Mpc/degree
Scale(Virgo + GA + Shapley):    2901 pc/arcsec =  2.901 kpc/arcsec = 174.04 kpc/arcmin =  10.44 Mpc/degree

To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
Search for Objects within +/-arcmin where 100 kpc = 0.575 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 43680 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.145390 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 663 Mpc (m-M) = 39.11 mag Angular-Size Distance : 505 Mpc (m-M) = 38.52 mag Co-Moving Radial Distance : 579 Mpc (m-M) = 38.81 mag Co-Moving Tangential Dist. : 579 Mpc (m-M) = 38.81 mag Co-Moving Volume : 0.813 Gpc^3 Light Travel-Time : 1.764 Gyr Age at Redshift 0.145390 : 11.535 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 2450 pc/arcsec = 2.450 kpc/arcsec = 147.03 kpc/arcmin = 8.82 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.58101; Magnitude per Unit Area = 0.5895 mag
To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities


The brightest flux in each of the following spectral regions, when available:
Gamma-Ray (ν > 2E19 Hz); X-Ray (2E19 Hz > ν > 2E16 Hz); Ultraviolet (2E16 Hz > ν > 9E14 Hz); Visual (9E14 Hz > ν > 3E14 Hz);
Near-Infrared (3E14 Hz > ν > 6E13 Hz); Mid-Infrared (6E13 Hz > ν > 7.5E12 Hz); Far-Infrared (7.5E12 Hz > ν > 1E12 Hz);
Sub-Millimeter (1E12 Hz > ν > 3E11 Hz); Millimeter (3E11 Hz > ν > 3E10 Hz); Radio (3E10 Hz > ν).

Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
Near-InfraredK_s 13.795 +/- 0.237 mag 20032MASX.C.......:-25.31 +/- 0.55 [mag] 3.81E+10 +/- 1.20E+10
Radio1.40 GHz 286 milliJy 1992ApJS...79..331W 2.11E+34 [W] 5.48E+07
NOTE: The above quantities are derived using a Distance Modulus of 39.11 mag corresponding to
a Luminosity Distance of 663.1 Mpc [assuming 10%uncertainty] using the Cosmology-Corrected Quantities.
The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

View details and SED for 12 Photometric data point(s) available in NED.


The largest diameters in the Visual and Near-Infrared spectral regions, when available:

Passband Apparent Major Axis
(2a) [arcsec]
Apparent Minor Axis
(2b) [arcsec]
Reference Level RefcodePhysical Major Axis
(2a) [kpc]
Physical Minor Axis
(2b) [kpc]
K_s (2MASS "total") 20.1020.1090 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:58.3058.30
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 2.901 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 2 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for 2MASX J21452991+8154537 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- 2MASX J21452991+8154537SIMBAD (CDS, Strasbourg, France)
2MASS Extended Source Images (JHKs) -- 2MASX J21452991+8154537NASA/IPAC Infrared Science Archive (IRSA)
NRAO/VLA Sky Survey (NVSS)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- 2MASX J21452991+8154537GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- 2MASX J21452991+8154537NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 21h45m30.9s, +81d54m54s (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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