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Position Reference:2016SDSSD.C...0000:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  251.481864   17.127345 16h45m55.647s +17d07m38.44s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  252.041350   17.040237 16h48m09.924s +17d02m24.85s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  246.974987   39.104053                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  247.675249   39.097882                              5.00E-01  5.00E-01    0
Galactic               35.543525   34.719623                              5.00E-01  5.00E-01    0
SuperGalactic         109.430847   59.576954                              5.00E-01  5.00E-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]
0.424
0.355
0.268
0.212
0.147
0.415
0.323
0.224
0.166
0.124
0.069
0.044
0.030
0.015

  

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


Bandpass [µm]
Aλ [mag]
Landolt
U
(0.35)
 0.424
Landolt
B
(0.43)
 0.355
Landolt
V
(0.54)
 0.268
Landolt
R
(0.64)
 0.212
Landolt
I
(0.80)
 0.147
CTIO
U
(0.37)
 0.402
CTIO
B
(0.43)
 0.356
CTIO
V
(0.55)
 0.263
CTIO
R
(0.65)
 0.207
CTIO
I
(0.80)
 0.148
UKIRT
J
(1.25)
 0.069
UKIRT
H
(1.66)
 0.044
UKIRT
K
(2.19)
 0.030
UKIRT
L'
(3.78)
 0.015
Gunn
g
(0.52)
 0.285
Gunn
r
(0.66)
 0.201
Gunn
i
(0.79)
 0.152
Gunn
z
(0.91)
 0.121
Spinrad
R_S
(0.69)
 0.188
Stromgren
u
(0.35)
 0.421
Stromgren
b
(0.47)
 0.328
Stromgren
v
(0.41)
 0.371
Stromgren
beta
(0.49)
 0.312
Stromgren
y
(0.55)
 0.263
SDSS
u
(0.36)
 0.415
SDSS
g
(0.47)
 0.323
SDSS
r
(0.62)
 0.224
SDSS
i
(0.75)
 0.166
SDSS
z
(0.89)
 0.124
DSS-II
g
(0.46)
 0.331
DSS-II
r
(0.65)
 0.204
DSS-II
i
(0.81)
 0.146
PS1
g
(0.49)
 0.311
PS1
r
(0.62)
 0.222
PS1
i
(0.75)
 0.165
PS1
z
(0.87)
 0.129
PS1
y
(0.97)
 0.106
PS1
w
(0.62)
 0.229
LSST
u
(0.37)
 0.406
LSST
g
(0.48)
 0.317
LSST
r
(0.62)
 0.223
LSST
i
(0.75)
 0.165
LSST
z
(0.87)
 0.130
LSST
y
(0.97)
 0.107
WFPC2
F300W
(0.31)
 0.480
WFPC2
F450W
(0.46)
 0.334
WFPC2
F555W
(0.54)
 0.270
WFPC2
F606W
(0.60)
 0.236
WFPC2
F702W
(0.69)
 0.191
WFPC2
F814W
(0.79)
 0.152
WFC3
F105W
(1.04)
 0.095
WFC3
F110W
(1.12)
 0.086
WFC3
F125W
(1.23)
 0.071
WFC3
F140W
(1.37)
 0.060
WFC3
F160W
(1.53)
 0.050
WFC3
F200LP
(0.55)
 0.290
WFC3
F218W
(0.22)
 0.760
WFC3
F225W
(0.24)
 0.684
WFC3
F275W
(0.27)
 0.537
WFC3
F300X
(0.29)
 0.512
WFC3
F336W
(0.34)
 0.436
WFC3
F350LP
(0.59)
 0.257
WFC3
F390W
(0.40)
 0.381
WFC3
F438W
(0.43)
 0.355
WFC3
F475W
(0.48)
 0.318
WFC3
F475X
(0.50)
 0.305
WFC3
F555W
(0.53)
 0.280
WFC3
F600LP
(0.74)
 0.174
WFC3
F606W
(0.59)
 0.244
WFC3
F625W
(0.62)
 0.221
WFC3
F775W
(0.76)
 0.161
WFC3
F814W
(0.80)
 0.150
WFC3
F850LP
(0.91)
 0.118
ACS
clear
(0.62)
 0.238
ACS
F435W
(0.43)
 0.353
ACS
F475W
(0.48)
 0.320
ACS
F550M
(0.56)
 0.256
ACS
F555W
(0.54)
 0.273
ACS
F606W
(0.59)
 0.242
ACS
F625W
(0.63)
 0.217
ACS
F775W
(0.77)
 0.159
ACS
F814W
(0.80)
 0.149
ACS
F850LP
(0.90)
 0.122
DES
g
(0.48)
 0.317
DES
r
(0.64)
 0.213
DES
i
(0.78)
 0.156
DES
z
(0.91)
 0.119
DES
Y
(0.99)
 0.104


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]
0.551
0.438
0.336
0.271
0.197
0.523
0.385
0.279
0.212
0.150
0.092
0.058
0.037
0.016


Galactic Extinction based on H I Column Densities and Galaxy Counts 
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.280 mag 

See Notes on Galactic Extinction for important caveats.

Helio. Radial Velocity     :    138190 +/-       33 km/s SLS  
Redshift                   :  0.460951 +/- 0.000110  SLS   2016SDSSD.C...0000:
Major Diameter (arcmin)    :      
Minor Diameter (arcmin)    :      
Magnitude and Filter       :      
Classifications            :                     

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:
1 Redshift data point(s)      12 photometric data point(s)      

Calculated and Corrected Velocities
V (Heliocentric)           :  138190 +/-     33 km/s SLS  2016SDSSD.C...0000:
V (Kinematic LSR)          :  138208 +/-     33 km/s SLS  1986MNRAS.221.1023K
V (Galactocentric GSR)     :  138310 +/-     33 km/s SLS  1991RC3.9.C...0000d
V (Local Group)            :  138316 +/-     34 km/s SLS  1996AJ....111..794K
V (3K CMB)                 :  138213 +/-     33 km/s SLS  1996ApJ...473..576F
V (Virgo Infall only)      :  138411 +/-     34 km/s SLS  2000ApJ...529..786M
V (Virgo + GA only)        :  138514 +/-     35 km/s SLS  2000ApJ...529..786M
V (Virgo + GA + Shapley)   :  138555 +/-     35 km/s SLS  2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :  1894.7 +/-  132.6 Mpc      (m-M) = 41.39 +/- 0.15 mag
D (Local Group)            :  1894.7 +/-  132.6 Mpc      (m-M) = 41.39 +/- 0.15 mag
D (3K CMB)                 :  1893.3 +/-  132.5 Mpc      (m-M) = 41.39 +/- 0.15 mag
D (Virgo Infall only)      :  1896.0 +/-  132.7 Mpc      (m-M) = 41.39 +/- 0.15 mag
D (Virgo + GA only)        :  1897.4 +/-  132.8 Mpc      (m-M) = 41.39 +/- 0.15 mag
D (Virgo + GA + Shapley)   :  1898.0 +/-  132.9 Mpc      (m-M) = 41.39 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :    9186 pc/arcsec =  9.186 kpc/arcsec = 551.13 kpc/arcmin =  33.07 Mpc/degree
Scale (Local Group)        :    9186 pc/arcsec =  9.186 kpc/arcsec = 551.16 kpc/arcmin =  33.07 Mpc/degree
Scale (3K CMB)             :    9179 pc/arcsec =  9.179 kpc/arcsec = 550.75 kpc/arcmin =  33.04 Mpc/degree
Scale (Virgo Infall only)  :    9192 pc/arcsec =  9.192 kpc/arcsec = 551.54 kpc/arcmin =  33.09 Mpc/degree
Scale (Virgo + GA only)    :    9199 pc/arcsec =  9.199 kpc/arcsec = 551.94 kpc/arcmin =  33.12 Mpc/degree
Scale(Virgo + GA + Shapley):    9202 pc/arcsec =  9.202 kpc/arcsec = 552.11 kpc/arcmin =  33.13 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 =  0.181 arcmin  
and Selected Redshift, defined by the Velocity Range:
from  to km/sec where V(Heliocentric) = 138190 km/sec  






Cosmology-Corrected Quantities [Ho =  73.00 km/sec/Mpc, Ωmatter =   0.27, Ωvacuum =   0.73]
[Redshift 0.461029 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation]
Luminosity Distance        :     2490 Mpc      (m-M) = 41.98 mag
Angular-Size Distance      :     1166 Mpc      (m-M) = 40.33 mag
Co-Moving Radial Distance  :     1704 Mpc      (m-M) = 41.16 mag
Co-Moving Tangential Dist. :     1704 Mpc      (m-M) = 41.16 mag
Co-Moving Volume           : 20.7 Gpc^3
Light Travel-Time          :    4.603 Gyr
Age at Redshift 0.461029   :    8.696 Gyr
Age of Universe            :   13.299 Gyr
Scale (Cosmology Corrected):    5654 pc/arcsec =  5.654 kpc/arcsec = 339.26 kpc/arcmin =  20.36 Mpc/degree
Surface Brightness Dimming : Flux Density per Unit Area =  0.21946; Magnitude per Unit Area = 1.647 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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