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Position Reference:2010ApJS..189...37E

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 238.7695345  35.6592910 15h55m04.688s +35d39m33.45s  4.20E-01  4.20E-01    0
Equatorial (J2000.0) 239.2395271  35.5159669 15h56m57.486s +35d30m57.48s  4.20E-01  4.20E-01    0
Ecliptic   (B1950.0) 223.9037646  54.2195970                              4.20E-01  4.20E-01    0
Ecliptic   (J2000.0) 224.6083401  54.2147414                              4.20E-01  4.20E-01    0
Galactic              56.8201945  49.8754044                              4.20E-01  4.20E-01    0
SuperGalactic         81.2817433  45.7264853                              4.20E-01  4.20E-01    0

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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  t
S  D  S  S
U  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]
0.091
0.076
0.057
0.045
0.031
0.089
0.069
0.048
0.036
0.026
0.015
0.009
0.006
0.003

  

Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
 


Bandpass [µm]
Aλ [mag]
Landolt
U
(0.35)
 0.091
Landolt
B
(0.43)
 0.076
Landolt
V
(0.54)
 0.057
Landolt
R
(0.64)
 0.045
Landolt
I
(0.80)
 0.031
CTIO
U
(0.37)
 0.086
CTIO
B
(0.43)
 0.076
CTIO
V
(0.55)
 0.056
CTIO
R
(0.65)
 0.044
CTIO
I
(0.80)
 0.032
UKIRT
J
(1.25)
 0.015
UKIRT
H
(1.66)
 0.009
UKIRT
K
(2.19)
 0.006
UKIRT
L'
(3.78)
 0.003
Gunn
g
(0.52)
 0.061
Gunn
r
(0.66)
 0.043
Gunn
i
(0.79)
 0.033
Gunn
z
(0.91)
 0.026
Spinrad
R_S
(0.69)
 0.040
Stromgren
u
(0.35)
 0.090
Stromgren
b
(0.47)
 0.070
Stromgren
v
(0.41)
 0.079
Stromgren
beta
(0.49)
 0.067
Stromgren
y
(0.55)
 0.056
SDSS
u
(0.36)
 0.089
SDSS
g
(0.47)
 0.069
SDSS
r
(0.62)
 0.048
SDSS
i
(0.75)
 0.036
SDSS
z
(0.89)
 0.026
DSS-II
g
(0.46)
 0.071
DSS-II
r
(0.65)
 0.044
DSS-II
i
(0.81)
 0.031
PS1
g
(0.49)
 0.066
PS1
r
(0.62)
 0.047
PS1
i
(0.75)
 0.035
PS1
z
(0.87)
 0.028
PS1
y
(0.97)
 0.023
PS1
w
(0.62)
 0.049
LSST
u
(0.37)
 0.087
LSST
g
(0.48)
 0.068
LSST
r
(0.62)
 0.048
LSST
i
(0.75)
 0.035
LSST
z
(0.87)
 0.028
LSST
y
(0.97)
 0.023
WFPC2
F300W
(0.31)
 0.103
WFPC2
F450W
(0.46)
 0.071
WFPC2
F555W
(0.54)
 0.058
WFPC2
F606W
(0.60)
 0.051
WFPC2
F702W
(0.69)
 0.041
WFPC2
F814W
(0.79)
 0.032
WFC3
F105W
(1.04)
 0.020
WFC3
F110W
(1.12)
 0.018
WFC3
F125W
(1.23)
 0.015
WFC3
F140W
(1.37)
 0.013
WFC3
F160W
(1.53)
 0.011
WFC3
F200LP
(0.55)
 0.062
WFC3
F218W
(0.22)
 0.162
WFC3
F225W
(0.24)
 0.146
WFC3
F275W
(0.27)
 0.115
WFC3
F300X
(0.29)
 0.109
WFC3
F336W
(0.34)
 0.093
WFC3
F350LP
(0.59)
 0.055
WFC3
F390W
(0.40)
 0.081
WFC3
F438W
(0.43)
 0.076
WFC3
F475W
(0.48)
 0.068
WFC3
F475X
(0.50)
 0.065
WFC3
F555W
(0.53)
 0.060
WFC3
F600LP
(0.74)
 0.037
WFC3
F606W
(0.59)
 0.052
WFC3
F625W
(0.62)
 0.047
WFC3
F775W
(0.76)
 0.034
WFC3
F814W
(0.80)
 0.032
WFC3
F850LP
(0.91)
 0.025
ACS
clear
(0.62)
 0.051
ACS
F435W
(0.43)
 0.076
ACS
F475W
(0.48)
 0.068
ACS
F550M
(0.56)
 0.055
ACS
F555W
(0.54)
 0.058
ACS
F606W
(0.59)
 0.052
ACS
F625W
(0.63)
 0.046
ACS
F775W
(0.77)
 0.034
ACS
F814W
(0.80)
 0.032
ACS
F850LP
(0.90)
 0.026
DES
g
(0.48)
 0.068
DES
r
(0.64)
 0.046
DES
i
(0.78)
 0.033
DES
z
(0.91)
 0.025
DES
Y
(0.99)
 0.022


For completeness, we include the original SFD98 values:


    
 
L  a  n  d  o  l  t
S  D  S  S
U  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]
0.115
0.091
0.070
0.056
0.041
0.109
0.080
0.058
0.044
0.031
0.019
0.012
0.008
0.003


Galactic Extinction based on H I Column Densities and Galaxy Counts 
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.070 mag 

See Notes on Galactic Extinction for important caveats.

Helio. Radial Velocity     :    899378 +/-   239834 km/s UUN  
Redshift                   :  3.000000 +/- 0.800000  UUN   2016ApJ...817....7P

Description                     :                     
Log Flux Density (ergs/s/cm^2^) :      
Passband                        :      
Spare 4                         :      

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:
3 Redshift data point(s)      21 photometric data point(s)      1 Diameter data point(s)      

Calculated and Corrected Velocities
V (Heliocentric)           :  899378 +/- 239834 km/s UUN  2016ApJ...817....7P
V (Kinematic LSR)          :  899395 +/- 239834 km/s UUN  1986MNRAS.221.1023K
V (Galactocentric GSR)     :  899511 +/- 239834 km/s UUN  1991RC3.9.C...0000d
V (Local Group)            :  899525 +/- 239834 km/s UUN  1996AJ....111..794K
V (3K CMB)                 :  899448 +/- 239834 km/s UUN  1996ApJ...473..576F
V (Virgo Infall only)      :  899649 +/- 239834 km/s UUN  2000ApJ...529..786M
V (Virgo + GA only)        :  899671 +/- 239834 km/s UUN  2000ApJ...529..786M
V (Virgo + GA + Shapley)   :  899694 +/- 239834 km/s UUN  2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     : 12322.1 +/- 3396.7 Mpc      (m-M) = 45.45 +/- 0.53 mag
D (Local Group)            : 12322.3 +/- 3396.7 Mpc      (m-M) = 45.45 +/- 0.53 mag
D (3K CMB)                 : 12321.2 +/- 3396.7 Mpc      (m-M) = 45.45 +/- 0.53 mag
D (Virgo Infall only)      : 12324.0 +/- 3396.8 Mpc      (m-M) = 45.45 +/- 0.53 mag
D (Virgo + GA only)        : 12324.3 +/- 3396.8 Mpc      (m-M) = 45.45 +/- 0.53 mag
D (Virgo + GA + Shapley)   : 12324.6 +/- 3396.8 Mpc      (m-M) = 45.45 +/- 0.53 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :   59739 pc/arcsec = 59.739 kpc/arcsec = 3584.34 kpc/arcmin = 215.06 Mpc/degree
Scale (Local Group)        :   59740 pc/arcsec = 59.740 kpc/arcsec = 3584.40 kpc/arcmin = 215.06 Mpc/degree
Scale (3K CMB)             :   59735 pc/arcsec = 59.735 kpc/arcsec = 3584.09 kpc/arcmin = 215.05 Mpc/degree
Scale (Virgo Infall only)  :   59748 pc/arcsec = 59.748 kpc/arcsec = 3584.89 kpc/arcmin = 215.09 Mpc/degree
Scale (Virgo + GA only)    :   59750 pc/arcsec = 59.750 kpc/arcsec = 3584.98 kpc/arcmin = 215.10 Mpc/degree
Scale(Virgo + GA + Shapley):   59751 pc/arcsec = 59.751 kpc/arcsec = 3585.07 kpc/arcmin = 215.10 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 =  0.028 arcmin  
and Selected Redshift, defined by the Velocity Range:
from  to km/sec where V(Heliocentric) = 899378 km/sec  






Cosmology-Corrected Quantities [Ho =  73.00 km/sec/Mpc, Ωmatter =   0.27, Ωvacuum =   0.73]
[Redshift 3.000234 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation]
Luminosity Distance        :    25142 Mpc      (m-M) = 47.00 mag
Angular-Size Distance      :     1571 Mpc      (m-M) = 40.98 mag
Co-Moving Radial Distance  :     6285 Mpc      (m-M) = 43.99 mag
Co-Moving Tangential Dist. :     6285 Mpc      (m-M) = 43.99 mag
Co-Moving Volume           : 1.04e+03 Gpc^3
Light Travel-Time          :   11.163 Gyr
Age at Redshift 3.000234   :    2.135 Gyr
Age of Universe            :   13.299 Gyr
Scale (Cosmology Corrected):    7617 pc/arcsec =  7.617 kpc/arcsec = 457.04 kpc/arcmin =  27.42 Mpc/degree
Surface Brightness Dimming : Flux Density per Unit Area =  0.00391; Magnitude per Unit Area = 6.021 mag







To change Cosmological Input Parameters for Derived Quantities:
Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button 

HoΩmatterΩvacuum
    


Correct Redshift To the Reference Frame defined by:
 3K CMB
 Virgo Infall only
 (Virgo + GA) only
 Virgo + GA + Shapley


as Input for Calculation of the Distances and Cosmology-Corrected Quantities 

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