NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-19 T17:08:15 PDT
Help | Comment | NED Home

You have selected the following parameters to search on:

Velocity(km/s): Unconstrained
Include ANY Object Type:
Exclude ANY Object Type:

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

Detailed Information for Object No. 16

INDEX for Coma Berenices Dwarf
Essential Data (jump to sub-section of this query report):

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

Images
   
1 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
124 Reference(s)   
10 Position data point(s)
2 Redshift data point(s)   
2 Association(s)   

ESSENTIAL NOTE for Coma Berenices Dwarf (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for Coma Berenices Dwarf (Back to INDEX)
Object Names Type Object Names Type
Coma Berenices DwarfG Coma Satellite G
Coma Dwarf G [LM2010] 60 G

COORDINATES for Coma Berenices Dwarf (Back to INDEX)

Position Reference:2007ApJ...654..897B

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)   186.11909    24.18078   12h24m28.6s    +24d10m51s  3.00E+01  3.00E+01    0
Equatorial (J2000.0)   186.74583    23.90417   12h26m59.0s    +23d54m15s  3.00E+01  3.00E+01    0
Ecliptic   (B1950.0)   175.35075    24.48712                              3.00E+01  3.00E+01    0
Ecliptic   (J2000.0)   176.05223    24.48709                              3.00E+01  3.00E+01    0
Galactic               241.88705    83.61118                              3.00E+01  3.00E+01    0
SuperGalactic           91.59837     0.13349                              3.00E+01  3.00E+01    0
Additional detailed measurements with references are also available by clicking below:
10 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for Coma Berenices Dwarf (Back to INDEX)

4 Distances found in NED View 4 Individual Distance Measurement(s) for Coma Berenices Dwarf

Summary Statistics computed by NED from 4 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.


Coma Berenices Dwarf Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 18.23 0.044
Std. Dev. 0.12 0.002
Min. 18.13 0.042
Max. 18.40 0.048
Median 18.20 0.044

CLASSIFICATIONS (TYPES, ATTRIBUTES) for Coma Berenices Dwarf (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
Distance IndicatorHorizontal BranchHorizontal Branch...2009ApJ...695L..83M
4 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for Coma Berenices Dwarf (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]0.0730.0610.0460.0370.0250.0720.0560.0390.0290.0210.0120.0080.0050.003
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]0.0940.0750.0580.0460.0340.0900.0660.0480.0360.0260.0160.0100.0060.003


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.

BASIC DATA for Coma Berenices Dwarf (Back to INDEX)
Helio. Radial Velocity     :        98 km/s       
Redshift                   :  0.000327            2009ApJ...696..385G
Major Diameter (arcmin)    :      
Minor Diameter (arcmin)    :      
Magnitude and Filter       : 14.5V
Classifications            : dSph                

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

QUANTITIES DERIVED FROM REDSHIFT(Details)
Calculated and Corrected Velocities
V (Heliocentric)           :      98  km/s                2009ApJ...696..385G
V (Kinematic LSR)          :     104  km/s                1986MNRAS.221.1023K
V (Galactocentric GSR)     :      82 +/-      1 km/s      1991RC3.9.C...0000d
V (Local Group)            :      46 +/-      3 km/s      1996AJ....111..794K
V (3K CMB)                 :     399 +/-     21 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :      37 +/-      3 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :      39 +/-      3 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :      39 +/-      3 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/- 5 km/sec/Mpc)
D (Galactocentric GSR)     :    1.12 +/-   0.08 Mpc      (m-M) = 25.24 +/- 0.15 mag
D (Local Group)            :    0.63 +/-   0.06 Mpc      (m-M) = 24.00 +/- 0.20 mag
D (3K CMB)                 :    5.46 +/-   0.48 Mpc      (m-M) = 28.69 +/- 0.18 mag
D (Virgo Infall only)      :    0.50 +/-   0.04 Mpc      (m-M) = 23.51 +/- 0.15 mag
D (Virgo + GA only)        :    0.54 +/-   0.04 Mpc      (m-M) = 23.66 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    0.54 +/-   0.04 Mpc      (m-M) = 23.67 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :       5 pc/arcsec =  0.005 kpc/arcsec =   0.33 kpc/arcmin =   0.02 Mpc/degree
Scale (Local Group)        :       3 pc/arcsec =  0.003 kpc/arcsec =   0.18 kpc/arcmin =   0.01 Mpc/degree
Scale (3K CMB)             :      26 pc/arcsec =  0.026 kpc/arcsec =   1.59 kpc/arcmin =   0.10 Mpc/degree
Scale (Virgo Infall only)  :       2 pc/arcsec =  0.002 kpc/arcsec =   0.15 kpc/arcmin =   0.01 Mpc/degree
Scale (Virgo + GA only)    :       3 pc/arcsec =  0.003 kpc/arcsec =   0.16 kpc/arcmin =   0.01 Mpc/degree
Scale(Virgo + GA + Shapley):       3 pc/arcsec =  0.003 kpc/arcsec =   0.16 kpc/arcmin =   0.01 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 = 635.451 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 98 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.001330 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 5.47 Mpc (m-M) = 28.69 mag Angular-Size Distance : 5.45 Mpc (m-M) = 28.68 mag Co-Moving Radial Distance : 5.46 Mpc (m-M) = 28.69 mag Co-Moving Tangential Dist. : 5.46 Mpc (m-M) = 28.69 mag Co-Moving Volume : 6.81e-07 Gpc^3 Light Travel-Time : 0.018 Gyr Age at Redshift 0.001330 : 13.281 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 26 pc/arcsec = 0.026 kpc/arcsec = 1.59 kpc/arcmin = 0.10 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.99470; Magnitude per Unit Area = 0.00577 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

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for Coma Berenices Dwarf (Back to INDEX)

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).

Spectral
Region
Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
VisualV 14.1 +/- 0.5 mag 2012AJ....144....4M-4.13 +/- 0.51 [mag] 2.72E+03 +/- 1.26E+03
NOTE: The above quantities are derived using an estimated Distance Modulus of (18.23 +/- 0.12) mag corresponding to
a Metric Distance of (0.044 +/- 0.002) Mpc using the Average NED-D value.
The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

View details and SED for 1 Photometric data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for Coma Berenices Dwarf Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- Coma Berenices DwarfSIMBAD (CDS, Strasbourg, France)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- Coma Berenices DwarfGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- Coma Berenices DwarfNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h26m59.0s, +23d54m15s (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





Back to NED Home