N/A

Position Reference:2007SDSS6.C...0000:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  252.576236   40.040439 16h50m18.297s +40d02m25.58s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  252.993890   39.958079 16h51m58.533s +39d57m29.08s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  241.036066   61.745097                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  241.739676   61.739188                              5.00E-01  5.00E-01    0
Galactic               63.812823   39.238794                              5.00E-01  5.00E-01    0
SuperGalactic          68.157182   53.896949                              5.00E-01  5.00E-01    0

 N/A 

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]
0.079
0.066
0.050
0.040
0.027
0.077
0.060
0.042
0.031
0.023
0.013
0.008
0.006
0.003

  

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


Bandpass [µm]
Aλ [mag]
Landolt
U
(0.35)
 0.079
Landolt
B
(0.43)
 0.066
Landolt
V
(0.54)
 0.050
Landolt
R
(0.64)
 0.040
Landolt
I
(0.80)
 0.027
CTIO
U
(0.37)
 0.075
CTIO
B
(0.43)
 0.066
CTIO
V
(0.55)
 0.049
CTIO
R
(0.65)
 0.039
CTIO
I
(0.80)
 0.028
UKIRT
J
(1.25)
 0.013
UKIRT
H
(1.66)
 0.008
UKIRT
K
(2.19)
 0.006
UKIRT
L'
(3.78)
 0.003
Gunn
g
(0.52)
 0.053
Gunn
r
(0.66)
 0.037
Gunn
i
(0.79)
 0.028
Gunn
z
(0.91)
 0.023
Spinrad
R_S
(0.69)
 0.035
Stromgren
u
(0.35)
 0.079
Stromgren
b
(0.47)
 0.061
Stromgren
v
(0.41)
 0.069
Stromgren
beta
(0.49)
 0.058
Stromgren
y
(0.55)
 0.049
SDSS
u
(0.36)
 0.077
SDSS
g
(0.47)
 0.060
SDSS
r
(0.62)
 0.042
SDSS
i
(0.75)
 0.031
SDSS
z
(0.89)
 0.023
DSS-II
g
(0.46)
 0.062
DSS-II
r
(0.65)
 0.038
DSS-II
i
(0.81)
 0.027
PS1
g
(0.49)
 0.058
PS1
r
(0.62)
 0.041
PS1
i
(0.75)
 0.031
PS1
z
(0.87)
 0.024
PS1
y
(0.97)
 0.020
PS1
w
(0.62)
 0.043
LSST
u
(0.37)
 0.076
LSST
g
(0.48)
 0.059
LSST
r
(0.62)
 0.041
LSST
i
(0.75)
 0.031
LSST
z
(0.87)
 0.024
LSST
y
(0.97)
 0.020
WFPC2
F300W
(0.31)
 0.089
WFPC2
F450W
(0.46)
 0.062
WFPC2
F555W
(0.54)
 0.050
WFPC2
F606W
(0.60)
 0.044
WFPC2
F702W
(0.69)
 0.036
WFPC2
F814W
(0.79)
 0.028
WFC3
F105W
(1.04)
 0.018
WFC3
F110W
(1.12)
 0.016
WFC3
F125W
(1.23)
 0.013
WFC3
F140W
(1.37)
 0.011
WFC3
F160W
(1.53)
 0.009
WFC3
F200LP
(0.55)
 0.054
WFC3
F218W
(0.22)
 0.142
WFC3
F225W
(0.24)
 0.128
WFC3
F275W
(0.27)
 0.100
WFC3
F300X
(0.29)
 0.095
WFC3
F336W
(0.34)
 0.081
WFC3
F350LP
(0.59)
 0.048
WFC3
F390W
(0.40)
 0.071
WFC3
F438W
(0.43)
 0.066
WFC3
F475W
(0.48)
 0.059
WFC3
F475X
(0.50)
 0.057
WFC3
F555W
(0.53)
 0.052
WFC3
F600LP
(0.74)
 0.032
WFC3
F606W
(0.59)
 0.045
WFC3
F625W
(0.62)
 0.041
WFC3
F775W
(0.76)
 0.030
WFC3
F814W
(0.80)
 0.028
WFC3
F850LP
(0.91)
 0.022
ACS
clear
(0.62)
 0.044
ACS
F435W
(0.43)
 0.066
ACS
F475W
(0.48)
 0.060
ACS
F550M
(0.56)
 0.048
ACS
F555W
(0.54)
 0.051
ACS
F606W
(0.59)
 0.045
ACS
F625W
(0.63)
 0.040
ACS
F775W
(0.77)
 0.030
ACS
F814W
(0.80)
 0.028
ACS
F850LP
(0.90)
 0.023
DES
g
(0.48)
 0.059
DES
r
(0.64)
 0.040
DES
i
(0.78)
 0.029
DES
z
(0.91)
 0.022
DES
Y
(0.99)
 0.019


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]
0.099
0.079
0.061
0.049
0.035
0.094
0.069
0.050
0.038
0.027
0.016
0.011
0.007
0.003


Galactic Extinction based on H I Column Densities and Galaxy Counts 
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.030 mag 

See Notes on Galactic Extinction for important caveats.

Helio. Radial Velocity     :    277706 +/-       60 km/s SLS  
Redshift                   :  0.926326 +/- 0.000200  SLS  ; 2016SDSSD.C...0000:
Description                : Candidate      QSO  
Magnitude and Filter       : 18.1g
Spare 3                    :  0.10
Spare 4                    :  0.08

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:
15 Redshift data point(s)      45 photometric data point(s)      8 Diameter data point(s)      

Calculated and Corrected Velocities
V (Heliocentric)           :  277706 +/-     60 km/s SLS  2016SDSSD.C...0000:
V (Kinematic LSR)          :  277725 +/-     60 km/s SLS  1986MNRAS.221.1023K
V (Galactocentric GSR)     :  277874 +/-     60 km/s SLS  1991RC3.9.C...0000d
V (Local Group)            :  277905 +/-     61 km/s SLS  1996AJ....111..794K
V (3K CMB)                 :  277701 +/-     60 km/s SLS  1996ApJ...473..576F
V (Virgo Infall only)      :  277996 +/-     61 km/s SLS  2000ApJ...529..786M
V (Virgo + GA only)        :  277957 +/-     62 km/s SLS  2000ApJ...529..786M
V (Virgo + GA + Shapley)   :  277969 +/-     62 km/s SLS  2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :  3806.5 +/-  266.5 Mpc      (m-M) = 42.90 +/- 0.15 mag
D (Local Group)            :  3806.9 +/-  266.5 Mpc      (m-M) = 42.90 +/- 0.15 mag
D (3K CMB)                 :  3804.1 +/-  266.3 Mpc      (m-M) = 42.90 +/- 0.15 mag
D (Virgo Infall only)      :  3808.2 +/-  266.6 Mpc      (m-M) = 42.90 +/- 0.15 mag
D (Virgo + GA only)        :  3807.6 +/-  266.5 Mpc      (m-M) = 42.90 +/- 0.15 mag
D (Virgo + GA + Shapley)   :  3807.8 +/-  266.5 Mpc      (m-M) = 42.90 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :   18454 pc/arcsec = 18.454 kpc/arcsec = 1107.26 kpc/arcmin =  66.44 Mpc/degree
Scale (Local Group)        :   18456 pc/arcsec = 18.456 kpc/arcsec = 1107.39 kpc/arcmin =  66.44 Mpc/degree
Scale (3K CMB)             :   18443 pc/arcsec = 18.443 kpc/arcsec = 1106.57 kpc/arcmin =  66.39 Mpc/degree
Scale (Virgo Infall only)  :   18462 pc/arcsec = 18.462 kpc/arcsec = 1107.75 kpc/arcmin =  66.46 Mpc/degree
Scale (Virgo + GA only)    :   18460 pc/arcsec = 18.460 kpc/arcsec = 1107.59 kpc/arcmin =  66.46 Mpc/degree
Scale(Virgo + GA + Shapley):   18461 pc/arcsec = 18.461 kpc/arcsec = 1107.64 kpc/arcmin =  66.46 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 =  0.090 arcmin  
and Selected Redshift, defined by the Velocity Range:
from  to km/sec where V(Heliocentric) = 277706 km/sec  






Cosmology-Corrected Quantities [Ho =  73.00 km/sec/Mpc, Ωmatter =   0.27, Ωvacuum =   0.73]
[Redshift 0.926312 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation]
Luminosity Distance        :     5865 Mpc      (m-M) = 43.84 mag
Angular-Size Distance      :     1581 Mpc      (m-M) = 40.99 mag
Co-Moving Radial Distance  :     3045 Mpc      (m-M) = 42.42 mag
Co-Moving Tangential Dist. :     3045 Mpc      (m-M) = 42.42 mag
Co-Moving Volume           : 118 Gpc^3
Light Travel-Time          :    7.217 Gyr
Age at Redshift 0.926312   :    6.081 Gyr
Age of Universe            :   13.299 Gyr
Scale (Cosmology Corrected):    7663 pc/arcsec =  7.663 kpc/arcsec = 459.78 kpc/arcmin =  27.59 Mpc/degree
Surface Brightness Dimming : Flux Density per Unit Area =  0.07263; Magnitude per Unit Area = 2.847 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 

 N/A