NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-01-21 T18:17:17 PST
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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 NGC 1023 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    NGC 1023 GROUP                 02h39m37.9s +39d20m51s GGroup    589  0.001965       ...     ...    31     1    0    0     0    0     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - NGC 1023 GROUP

INDEX for NGC 1023 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
31 Reference(s)   
1 Note(s)   

ESSENTIAL NOTE for NGC 1023 GROUP (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 1023 GROUP (Back to INDEX)
Object Names Type Object Names Type
NGC 1023 GROUPGGroupNBGC 17-01 GGroup
LGG 070 GGroup[HG82] 67 GGroup

COORDINATES for NGC 1023 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)     39.1225     39.1328     02h36m29s     +39d08.0m  1.50E+02  1.50E+02    0
Equatorial (J2000.0)     39.9078     39.3475     02h39m38s     +39d20.9m  1.50E+02  1.50E+02    0
Ecliptic   (B1950.0)     49.3208     22.5986                              1.50E+02  1.50E+02    0
Ecliptic   (J2000.0)     50.0177     22.6039                              1.50E+02  1.50E+02    0
Galactic                144.7519    -18.8964                              1.50E+02  1.50E+02    0
SuperGalactic           341.7987     -9.0020                              1.50E+02  1.50E+02    0

REDSHIFT-INDEPENDENT DISTANCES for NGC 1023 GROUP (Back to INDEX)

1 Distances found in NED View 1 Individual Distance Measurement(s) for NGC 1023 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.


NGC 1023 GROUP Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 29.98 9.910
Std. Dev. N/A N/A
Min. 29.98 9.910
Max. 29.98 9.910
Median 29.98 9.910

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 1023 GROUP (Back to INDEX)
 N/A 

FOREGROUND GALACTIC EXTINCTION for NGC 1023 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]0.2530.2120.1600.1270.0880.2480.1930.1330.0990.0740.0410.0260.0180.009
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]0.3180.2520.1940.1560.1130.3010.2220.1610.1220.0860.0530.0340.0210.009


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.190 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 1023 GROUP (Back to INDEX)
Helio. Radial Velocity     :       589 km/s       
Redshift                   :  0.001965           1996ApJ...458..455F
Morphology                 :                     
Magnitude and Filter       :     B
Size (arcmin)              :      
Population Count           :     8

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.

QUANTITIES DERIVED FROM REDSHIFT(Details)
Calculated and Corrected Velocities
V (Heliocentric)           :     589  km/s                1996ApJ...458..455F
V (Kinematic LSR)          :     587  km/s                1986MNRAS.221.1023K
V (Galactocentric GSR)     :     707 +/-      5 km/s      1991RC3.9.C...0000d
V (Local Group)            :     781 +/-     12 km/s      1996AJ....111..794K
V (3K CMB)                 :     385 +/-     14 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :     786 +/-     12 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :     732 +/-     12 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :     729 +/-     12 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/- 5 km/sec/Mpc)
D (Galactocentric GSR)     :    9.68 +/-   0.68 Mpc      (m-M) = 29.93 +/- 0.15 mag
D (Local Group)            :   10.70 +/-   0.77 Mpc      (m-M) = 30.15 +/- 0.15 mag
D (3K CMB)                 :    5.27 +/-   0.42 Mpc      (m-M) = 28.61 +/- 0.17 mag
D (Virgo Infall only)      :   10.77 +/-   0.75 Mpc      (m-M) = 30.16 +/- 0.15 mag
D (Virgo + GA only)        :   10.03 +/-   0.70 Mpc      (m-M) = 30.01 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    9.98 +/-   0.70 Mpc      (m-M) = 30.00 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :      47 pc/arcsec =  0.047 kpc/arcsec =   2.82 kpc/arcmin =   0.17 Mpc/degree
Scale (Local Group)        :      52 pc/arcsec =  0.052 kpc/arcsec =   3.11 kpc/arcmin =   0.19 Mpc/degree
Scale (3K CMB)             :      26 pc/arcsec =  0.026 kpc/arcsec =   1.53 kpc/arcmin =   0.09 Mpc/degree
Scale (Virgo Infall only)  :      52 pc/arcsec =  0.052 kpc/arcsec =   3.13 kpc/arcmin =   0.19 Mpc/degree
Scale (Virgo + GA only)    :      49 pc/arcsec =  0.049 kpc/arcsec =   2.92 kpc/arcmin =   0.18 Mpc/degree
Scale(Virgo + GA + Shapley):      48 pc/arcsec =  0.048 kpc/arcsec =   2.90 kpc/arcmin =   0.17 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 = 34.447 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 589 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.001283 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 5.28 Mpc (m-M) = 28.61 mag Angular-Size Distance : 5.26 Mpc (m-M) = 28.61 mag Co-Moving Radial Distance : 5.27 Mpc (m-M) = 28.61 mag Co-Moving Tangential Dist. : 5.27 Mpc (m-M) = 28.61 mag Co-Moving Volume : 6.13e-07 Gpc^3 Light Travel-Time : 0.017 Gyr Age at Redshift 0.001283 : 13.282 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 26 pc/arcsec = 0.026 kpc/arcsec = 1.53 kpc/arcmin = 0.09 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.99488; Magnitude per Unit Area = 0.00557 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 NGC 1023 GROUP Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 1023 GROUPSIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 1023 GROUPVizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 1023 GROUPGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 1023 GROUPNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 02h39m37.9s, +39d20m51s (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)
Explore resources with DataScope (15 arcmin search radius)HEASARC (NASA/GSFC)
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)
The NRAO Data Archive System

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