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You have selected the following parameters to search on:

Parameters for Distances and Cosmology: H_o= 73.0; Ω_matter = 0.27; Ω_vacuum = 0.73;
Derived Quantities use a Redshift corrected to a Reference Frame defined by the 3K CMB

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 4494                       12h31m24.1s +25d46m31s G        1342  0.004476      10.71    ...   405    15   72   21    13    7     0 Retrieve Retrieve 1

Detailed information for each object

Object No. 1 - NGC 4494

INDEX for NGC 4494

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
Quick-Look Angular and Physical Sizes
Classifications
Foreground Galactic Extinction
External Services

Detailed Data (NED queries):

Images

72 Photometric data point(s) and SED

Spectra
Redshift-Independent Distances
405 Reference(s)
21 Position data point(s)
13 Redshift data point(s)
7 Diameter data point(s)
15 Note(s)
UGC data
RC3 data

ESSENTIAL NOTE for NGC 4494 (Back to INDEX)

The position given in 1996ApJS..106....1W is 11 arcsec west of the nucleus.

CROSS-IDENTIFICATIONS for NGC 4494 (Back to INDEX)

Object Names	Type	Object Names	Type
NGC 4494	G	PGC 041441	G
UGC 07662	G	SSTSL2 J123124.03+254630.0	IrS
CGCG 129-005	G	UZC J123124.3+254632	G
CGCG 1228.9+2603	G	CXO J123124.1+254630	XrayS
MCG +04-30-002	G	1WGA J1231+2547	XrayS
GIN 784	G	2XMM J123124.1+254630	XrayS
2MASX J12312403+2546299	IrS	2XMMp J123124.1+254630	XrayS
2MASXi J1231241+254627	IrS	CXO J123124.10+254630.8	XrayS
IRAS F12288+2603	IrS	LGG 294:[G93] 001	G
LDCE 0867 NED118	G	[M98j] 173 NED11	G
HDCE 0706 NED073	G	[GMM2009b] 47	G
USGC U491 NED03	G	NGC 4494:[L2011a] X0001	XrayS
[BEC2010] HRS 186	G	[VPP2013] 17	G
NSA 161931	G

COORDINATES for NGC 4494 (Back to INDEX)

Position Reference:2010ApJS..189...37E

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 187.2275209  26.0512080 12h28m54.605s +26d03m04.35s  4.20E-01  4.20E-01    0
Equatorial (J2000.0) 187.8504329  25.7752519 12h31m24.104s +25d46m30.91s  4.20E-01  4.20E-01    0
Ecliptic   (B1950.0) 175.4425410  26.6081523                              4.20E-01  4.20E-01    0
Ecliptic   (J2000.0) 176.1443224  26.6081141                              4.20E-01  4.20E-01    0
Galactic             228.5940536  85.3161378                              4.20E-01  4.20E-01    0
SuperGalactic         90.0999868   1.6371994                              4.20E-01  4.20E-01    0

Additional detailed measurements with references are also available by clicking below:
21 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 4494 (Back to INDEX)

33 Distances found in NED View 33 Individual Distance Measurement(s) for NGC 4494

Summary Statistics computed by NED from 33 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 4494	Distance Modulus (mag)	Metric Distance (Mpc)
Mean	30.62	13.638
Std. Dev.	0.52	3.109
Min.	29.40	7.590
Max.	31.52	20.100
Median	30.64	13.400

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4494 (Back to INDEX)

Type	As Published	NED Homogenized	Flag	Reference Code
Hierarchy	F?	Possible field galaxy	...	1976ApJS...32..409T
Kinematics	HI line width	HI line width	...	1994A&A...288..705G
Galaxy Morphology	E1-2	E1-2	...	1991RC3.9.C...0000d
Distance Indicator	Tully-Fisher	Tully-Fisher	...	2007A&A...465...71T

41 Detailed Classification(s)

FOREGROUND GALACTIC EXTINCTION for NGC 4494 (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 R_v = 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)
A_λ [mag] 0.090 0.075 0.057 0.045 0.031 0.088 0.069 0.047 0.035 0.026 0.015 0.009 0.006 0.003

  

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

Bandpass [µm] A_λ [mag]
Landolt U (0.35)  0.090
Landolt B (0.43)  0.075
Landolt V (0.54)  0.057
Landolt R (0.64)  0.045
Landolt I (0.80)  0.031
CTIO U (0.37)  0.085
CTIO B (0.43)  0.076
CTIO V (0.55)  0.056
CTIO R (0.65)  0.044
CTIO I (0.80)  0.032
UKIRT J (1.25)  0.015
UKIRT H (1.66)  0.009
UKIRT K (2.19)  0.006
UKIRT L' (3.78)  0.003
Gunn g (0.52)  0.061
Gunn r (0.66)  0.043
Gunn i (0.79)  0.032
Gunn z (0.91)  0.026
Spinrad R_S (0.69)  0.040
Stromgren u (0.35)  0.089
Stromgren b (0.47)  0.070
Stromgren v (0.41)  0.079
Stromgren beta (0.49)  0.066
Stromgren y (0.55)  0.056
SDSS u (0.36)  0.088
SDSS g (0.47)  0.069
SDSS r (0.62)  0.047
SDSS i (0.75)  0.035
SDSS z (0.89)  0.026
DSS-II g (0.46)  0.070
DSS-II r (0.65)  0.043
DSS-II i (0.81)  0.031
PS1 g (0.49)  0.066
PS1 r (0.62)  0.047
PS1 i (0.75)  0.035
PS1 z (0.87)  0.027
PS1 y (0.97)  0.023
PS1 w (0.62)  0.049
LSST u (0.37)  0.086
LSST g (0.48)  0.067
LSST r (0.62)  0.047
LSST i (0.75)  0.035
LSST z (0.87)  0.028
LSST y (0.97)  0.023
WFPC2 F300W (0.31)  0.102
WFPC2 F450W (0.46)  0.071
WFPC2 F555W (0.54)  0.057
WFPC2 F606W (0.60)  0.050
WFPC2 F702W (0.69)  0.040
WFPC2 F814W (0.79)  0.032
WFC3 F105W (1.04)  0.020
WFC3 F110W (1.12)  0.018
WFC3 F125W (1.23)  0.015
WFC3 F140W (1.37)  0.013
WFC3 F160W (1.53)  0.011
WFC3 F200LP (0.55)  0.061
WFC3 F218W (0.22)  0.161
WFC3 F225W (0.24)  0.145
WFC3 F275W (0.27)  0.114
WFC3 F300X (0.29)  0.109
WFC3 F336W (0.34)  0.093
WFC3 F350LP (0.59)  0.055
WFC3 F390W (0.40)  0.081
WFC3 F438W (0.43)  0.075
WFC3 F475W (0.48)  0.068
WFC3 F475X (0.50)  0.065
WFC3 F555W (0.53)  0.059
WFC3 F600LP (0.74)  0.037
WFC3 F606W (0.59)  0.052
WFC3 F625W (0.62)  0.047
WFC3 F775W (0.76)  0.034
WFC3 F814W (0.80)  0.032
WFC3 F850LP (0.91)  0.025
ACS clear (0.62)  0.051
ACS F435W (0.43)  0.075
ACS F475W (0.48)  0.068
ACS F550M (0.56)  0.054
ACS F555W (0.54)  0.058
ACS F606W (0.59)  0.051
ACS F625W (0.63)  0.046
ACS F775W (0.77)  0.034
ACS F814W (0.80)  0.032
ACS F850LP (0.90)  0.026
DES g (0.48)  0.067
DES r (0.64)  0.045
DES i (0.78)  0.033
DES z (0.91)  0.025
DES Y (0.99)  0.022


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)
A_λ [mag] 0.116 0.092 0.071 0.057 0.042 0.110 0.081 0.059 0.045 0.032 0.019 0.012 0.008 0.003


Galactic Extinction based on H I Column Densities and Galaxy Counts 
(Burstein & Heiles; 1982AJ.....87.1165B) assuming R_v = 3.1:
A_B = 0.050 mag 

See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 4494 (Back to INDEX)

Helio. Radial Velocity     :      1342 +/-        5 km/s      
Redshift                   :  0.004476 +/- 0.000017        2011MNRAS.413..813C
Major Diameter (arcmin)    :   4.8
Minor Diameter (arcmin)    :   3.5
Magnitude and Filter       : 10.71
Classifications            : E1-2           LINER

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:
13 Redshift data point(s)      72 photometric data point(s)      7 Diameter data point(s)

QUANTITIES DERIVED FROM REDSHIFT for NGC 4494 (Details)(Back to INDEX)

Calculated and Corrected Velocities
V (Heliocentric)           :    1342 +/-      5 km/s      2011MNRAS.413..813C
V (Kinematic LSR)          :    1348 +/-      5 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    1334 +/-      5 km/s      1991RC3.9.C...0000d
V (Local Group)            :    1302 +/-      6 km/s      1996AJ....111..794K
V (3K CMB)                 :    1634 +/-     21 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    1877 +/-     41 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    2052 +/-     42 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    2060 +/-     42 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where H_o =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    18.3 +/-    1.3 Mpc      (m-M) = 31.31 +/- 0.15 mag
D (Local Group)            :    17.8 +/-    1.3 Mpc      (m-M) = 31.26 +/- 0.15 mag
D (3K CMB)                 :    22.4 +/-    1.6 Mpc      (m-M) = 31.75 +/- 0.15 mag
D (Virgo Infall only)      :    25.7 +/-    1.9 Mpc      (m-M) = 32.05 +/- 0.15 mag
D (Virgo + GA only)        :    28.1 +/-    2.0 Mpc      (m-M) = 32.24 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    28.2 +/-    2.0 Mpc      (m-M) = 32.25 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :      89 pc/arcsec =  0.089 kpc/arcsec =   5.32 kpc/arcmin =   0.32 Mpc/degree
Scale (Local Group)        :      86 pc/arcsec =  0.086 kpc/arcsec =   5.19 kpc/arcmin =   0.31 Mpc/degree
Scale (3K CMB)             :     109 pc/arcsec =  0.109 kpc/arcsec =   6.51 kpc/arcmin =   0.39 Mpc/degree
Scale (Virgo Infall only)  :     125 pc/arcsec =  0.125 kpc/arcsec =   7.48 kpc/arcmin =   0.45 Mpc/degree
Scale (Virgo + GA only)    :     136 pc/arcsec =  0.136 kpc/arcsec =   8.18 kpc/arcmin =   0.49 Mpc/degree
Scale(Virgo + GA + Shapley):     137 pc/arcsec =  0.137 kpc/arcsec =   8.21 kpc/arcmin =   0.49 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 = 12.180 arcmin  
and Selected Redshift, defined by the Velocity Range:
from  to km/sec where V(Heliocentric) =   1342 km/sec  






Cosmology-Corrected Quantities [H_o =  73.00 km/sec/Mpc, Ω_matter =   0.27, Ω_vacuum =   0.73]
[Redshift 0.005451 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation]
Luminosity Distance        : 22.5 Mpc      (m-M) = 31.76 mag
Angular-Size Distance      : 22.2 Mpc      (m-M) = 31.74 mag
Co-Moving Radial Distance  : 22.4 Mpc      (m-M) = 31.75 mag
Co-Moving Tangential Dist. : 22.4 Mpc      (m-M) = 31.75 mag
Co-Moving Volume           : 4.68e-05 Gpc^3
Light Travel-Time          :    0.073 Gyr
Age at Redshift 0.005451   :   13.226 Gyr
Age of Universe            :   13.299 Gyr
Scale (Cosmology Corrected):     108 pc/arcsec =  0.108 kpc/arcsec =   6.47 kpc/arcmin =   0.39 Mpc/degree
Surface Brightness Dimming : Flux Density per Unit Area =  0.97849; Magnitude per Unit Area = 0.02361 mag







To change Cosmological Input Parameters for Derived Quantities:
Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button 

H_oΩ_matterΩ_vacuum
    


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 NGC 4494 (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 νL_ν [W]	νL_ν [L_☉(Bolometric)]
X-Ray	0.2-8 keV (XMM)	2.34E-13 erg/cm^2^/s	2004MNRAS.349..535O	5.20E+32 [W]	1.35E+06
Ultraviolet	UV_1650 (m_T)	14.29 +/- 0.18 mag	1995A&AS..114..527R	-16.33 +/- 0.27 [mag]	6.68E+07 +/- 1.31E+07
Visual	V (V_T^0)	9.70 mag	1991RC3.9.C...0000d	-20.92 [mag]	1.51E+10
Near-Infrared	H^0^_T(25)_	6.81 +/- 0.15 mag	1996ApL&C..35....1G	-23.81 +/- 0.25 [mag]	2.21E+10 +/- 3.71E+09
Mid-Infrared	25 microns (IRAS)	0.170 +/- 0.044 Jy	1994PrivC.U..J....K	4.54E+34 +/- 1.23E+34 [W]	1.18E+08 +/- 3.20E+07
Far-Infrared	170 microns (ISO)	0.74 +/- Jy	2004ApJS..151..237T	2.90E+34 +/- 5.23E+33 [W]	7.54E+07 +/- 1.36E+07
Sub-Millimeter	450 microns (SCUBA)	<96 milliJy	2009ApJ...706...21S	< 1.42E+33 [W]	< 3.70E+06
Millimeter	95.725 GHz (NMA)	<7.0 milliJy	2011AJ....142..167D	< 1.49E+31 [W]	< 3.88E+04
Radio	2380 MHz	3. +/- 4. milliJy	1978ApJS...36...53D	1.59E+29 +/- 2.12E+29 [W]	4.13E+02 +/- 5.52E+02

NOTE: The above quantities are derived using an estimated Distance Modulus of (30.62 +/- 0.52) mag corresponding to
a Metric Distance of (13.638 +/- 3.109) 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 72 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 4494 (Back to INDEX)

The largest diameters in the Visual and Near-Infrared spectral regions, when available:

Passband	Apparent Major Axis (2a) [arcsec]	Apparent Minor Axis (2b) [arcsec]	PA [degrees] (J2000.0)	Reference Level	Refcode	Physical Major Axis (2a) [kpc]	Physical Minor Axis (2b) [kpc]
RC3 D_25; R_25 (blue)	287.20	212.53	...	25.0 B-mag arcsec^-2^	1991RC3.9.C...0000d	18.99	14.05
K_s (LGA/2MASS "total")	373.00	324.51	172	Diameter for "total" magnitude 2003AJ....125..525J	2003AJ....125..525J	24.66	21.46

NOTE: Physical diameters are derived using a scale of 0.0661 kpc/arcsec based on Average NED-D Metric Distance of (13.638 +/- 3.109) Mpc.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 7 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 4494 Help (Back to INDEX)

Resources for Object Names	Site/Service
Query SIMBAD by primary NED object name -- NGC 4494	SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 4494	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Uppsala General Catalog -- UGC 07662	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Original Zwicky Catalog -- CGCG 129-005	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query UZC Spectral Archive (60 arcsec search radius)	Updated Zwicky Catalog Data (Harvard/SAO)
Morphological Catalog of Galaxies -- MCG +04-30-002	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J12312403+2546299	NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J1231241+254627	NASA/IPAC Infrared Science Archive (IRSA)
IRAS Faint Source Catalog -- IRAS F12288+2603	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Catalogue of Principal Galaxies -- PGC 041441	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 041441	The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 4494	GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 4494	NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h31m24.1s, +25d46m31s (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)
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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NED results for object NGC 4494

1 objects found in NED.

Detailed information for each object