NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-23 T05:34:52 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 MESSIER 101 GROUP


1 objects found in NED.    

SOURCE LIST

 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    MESSIER 101 GROUP              14h02m58.6s +54d38m03s GGroup    225  0.000751       ...     ...    35     2    0    0     1    0     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - MESSIER 101 GROUP

INDEX for MESSIER 101 GROUP
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images

Spectra   
Redshift-Independent Distances
35 Reference(s)   
1 Redshift data point(s)   
2 Note(s)   

ESSENTIAL NOTE for MESSIER 101 GROUP (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for MESSIER 101 GROUP (Back to INDEX)
Object Names Type Object Names Type
MESSIER 101 GROUPGGroupNBGC 14-09 GGroup
NGC 5457 GROUP GGroup[HG82] 75 GGroup
LGG 371 GGroup[GH83] 128 GGroup
[TSK2008] 0216 GGroup  

COORDINATES for MESSIER 101 GROUP (Back to INDEX)

Position Reference:1993A&AS..100...47G

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)    210.3038     54.8739     14h01m13s     +54d52.4m  1.50E+02  1.50E+02    0
Equatorial (J2000.0)    210.7444     54.6341     14h02m58s     +54d38.0m  1.50E+02  1.50E+02    0
Ecliptic   (B1950.0)    173.2193     59.9829                              1.50E+02  1.50E+02    0
Ecliptic   (J2000.0)    173.9290     59.9831                              1.50E+02  1.50E+02    0
Galactic                102.3993     59.5499                              1.50E+02  1.50E+02    0
SuperGalactic            63.2765     22.5570                              1.50E+02  1.50E+02    0

REDSHIFT-INDEPENDENT DISTANCES for MESSIER 101 GROUP (Back to INDEX)

1 Distances found in NED View 1 Individual Distance Measurement(s) for MESSIER 101 GROUP

Summary Statistics computed by NED from 1 Distance(s) in the literature:
NOTE: These summary statistics are provided for "quick-look" reference only;
they are based exclusively on original values, as published.
No homogenization or corrections have been applied.


MESSIER 101 GROUP Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 29.62 8.390
Std. Dev. N/A N/A
Min. 29.62 8.390
Max. 29.62 8.390
Median 29.62 8.390

CLASSIFICATIONS (TYPES, ATTRIBUTES) for MESSIER 101 GROUP (Back to INDEX)
 N/A 

FOREGROUND GALACTIC EXTINCTION for MESSIER 101 GROUP (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]0.0380.0320.0240.0190.0130.0370.0290.0200.0150.0110.0060.0040.0030.001
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]0.0490.0390.0300.0240.0180.0470.0340.0250.0190.0130.0080.0050.0030.001


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.000 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for MESSIER 101 GROUP (Back to INDEX)
Helio. Radial Velocity     :       225 km/s       
Redshift                   :  0.000751           2000ApJS..128..431F
Morphology                 :                     
Magnitude and Filter       :      
Size (arcmin)              :      
Population Count           :     6

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)      

QUANTITIES DERIVED FROM REDSHIFT(Details)
Calculated and Corrected Velocities
V (Heliocentric)           :     225  km/s                2000ApJS..128..431F
V (Kinematic LSR)          :     238  km/s                1986MNRAS.221.1023K
V (Galactocentric GSR)     :     345 +/-      5 km/s      1991RC3.9.C...0000d
V (Local Group)            :     364 +/-      8 km/s      1996AJ....111..794K
V (3K CMB)                 :     345 +/-      8 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :     400 +/-      9 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :     433 +/-      9 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :     436 +/-      9 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/- 5 km/sec/Mpc)
D (Galactocentric GSR)     :    4.73 +/-   0.34 Mpc      (m-M) = 28.37 +/- 0.15 mag
D (Local Group)            :    4.98 +/-   0.37 Mpc      (m-M) = 28.49 +/- 0.15 mag
D (3K CMB)                 :    4.72 +/-   0.35 Mpc      (m-M) = 28.37 +/- 0.16 mag
D (Virgo Infall only)      :    5.49 +/-   0.39 Mpc      (m-M) = 28.70 +/- 0.15 mag
D (Virgo + GA only)        :    5.94 +/-   0.42 Mpc      (m-M) = 28.87 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    5.97 +/-   0.42 Mpc      (m-M) = 28.88 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :      23 pc/arcsec =  0.023 kpc/arcsec =   1.37 kpc/arcmin =   0.08 Mpc/degree
Scale (Local Group)        :      24 pc/arcsec =  0.024 kpc/arcsec =   1.45 kpc/arcmin =   0.09 Mpc/degree
Scale (3K CMB)             :      23 pc/arcsec =  0.023 kpc/arcsec =   1.37 kpc/arcmin =   0.08 Mpc/degree
Scale (Virgo Infall only)  :      27 pc/arcsec =  0.027 kpc/arcsec =   1.60 kpc/arcmin =   0.10 Mpc/degree
Scale (Virgo + GA only)    :      29 pc/arcsec =  0.029 kpc/arcsec =   1.73 kpc/arcmin =   0.10 Mpc/degree
Scale(Virgo + GA + Shapley):      29 pc/arcsec =  0.029 kpc/arcsec =   1.74 kpc/arcmin =   0.10 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 = 57.549 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 225 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.001151 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 4.73 Mpc (m-M) = 28.37 mag Angular-Size Distance : 4.72 Mpc (m-M) = 28.37 mag Co-Moving Radial Distance : 4.72 Mpc (m-M) = 28.37 mag Co-Moving Tangential Dist. : 4.72 Mpc (m-M) = 28.37 mag Co-Moving Volume : 4.42e-07 Gpc^3 Light Travel-Time : 0.015 Gyr Age at Redshift 0.001151 : 13.283 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 23 pc/arcsec = 0.023 kpc/arcsec = 1.37 kpc/arcmin = 0.08 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.99541; Magnitude per Unit Area = 0.004994 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: as Input for Calculation of the Distances and Cosmology-Corrected Quantities

EXTERNAL ARCHIVES AND SERVICES for MESSIER 101 GROUP Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- MESSIER 101 GROUPSIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 5457 GROUP VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- MESSIER 101 GROUPGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- MESSIER 101 GROUPNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 14h02m58.6s, +54d38m03s (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)
version
SDSS Sky Server
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)
    Size:     GIF     FITS File  
Faint Images of the Radio Sky at Twenty-Centimeters
The NRAO Data Archive System

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