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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 2945                       09h37m41.1s -22d02m06s G        4630  0.015444      13.22    ...    43     2   32    6     4   17     0 Retrieve Retrieve 1

Detailed information for each object

Object No. 1 - NGC 2945

INDEX for NGC 2945

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

32 Photometric data point(s) and SED

Spectra
Redshift-Independent Distances
43 Reference(s)
6 Position data point(s)
4 Redshift data point(s)
17 Diameter data point(s)
2 Note(s)
ESO data
RC3 data

ESSENTIAL NOTE for NGC 2945 (Back to INDEX)

N/A

CROSS-IDENTIFICATIONS for NGC 2945 (Back to INDEX)

Object Names	Type	Object Names	Type
NGC 2945	G	SGC 093523-2148.7	G
ESO 565- G 028	G	ESO-LV 5650280	G
ESO 093523-2148.7	G	6dF J0937410-220206	G
MCG -04-23-010	G	6dF J0937411-220206	G
MC 0935-217	G	LQAC 144-022 001	G
2MASX J09374111-2202064	IrS	PGC 027418	G
2MASXi J0937411-220211	IrS	NVSS J093741-220205	RadioS
2MASS J09374114-2202060	IrS	[MGD2014] 0935.3-2148	RadioS
GALEXASC J093741.03-220207.7	UvS
IRAS F09354-2148	IrS

COORDINATES for NGC 2945 (Back to INDEX)

Position Reference:20032MASX.C.......:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  143.846431  -21.809421  09h35m23.14s  -21d48m33.9s  1.25E+00  1.25E+00    0
Equatorial (J2000.0)  144.421375  -22.035056  09h37m41.13s  -22d02m06.2s  1.25E+00  1.25E+00    0
Ecliptic   (B1950.0)  154.679599  -33.971216                              1.25E+00  1.25E+00    0
Ecliptic   (J2000.0)  155.373945  -33.969018                              1.25E+00  1.25E+00    0
Galactic              254.463664   22.101113                              1.25E+00  1.25E+00    0
SuperGalactic         132.238261  -51.115925                              1.25E+00  1.25E+00    0

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

REDSHIFT-INDEPENDENT DISTANCES for NGC 2945 (Back to INDEX)

2 Distances found in NED View 2 Individual Distance Measurement(s) for NGC 2945

Summary Statistics computed by NED from 2 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 2945	Distance Modulus (mag)	Metric Distance (Mpc)
Mean	34.55	81.650
Std. Dev.	0.39	14.637
Min.	34.27	71.300
Max.	34.82	92.000
Median	34.55	81.650

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 2945 (Back to INDEX)

Type	As Published	NED Homogenized	Flag	Reference Code
Galaxy Morphology	SA0^-:	SA0^-?	...	1991RC3.9.C...0000d
Distance Indicator	Tully-Fisher	Tully-Fisher	...	2007A&A...465...71T

5 Detailed Classification(s)

FOREGROUND GALACTIC EXTINCTION for NGC 2945 (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] 0.265 0.221 0.167 0.132 0.092 0.259 0.202 0.139 0.104 0.077 0.043 0.027 0.018 0.009

  

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

Bandpass [µm] A_λ [mag]
Landolt U (0.35)  0.265
Landolt B (0.43)  0.221
Landolt V (0.54)  0.167
Landolt R (0.64)  0.132
Landolt I (0.80)  0.092
CTIO U (0.37)  0.251
CTIO B (0.43)  0.222
CTIO V (0.55)  0.164
CTIO R (0.65)  0.129
CTIO I (0.80)  0.093
UKIRT J (1.25)  0.043
UKIRT H (1.66)  0.027
UKIRT K (2.19)  0.018
UKIRT L' (3.78)  0.009
Gunn g (0.52)  0.178
Gunn r (0.66)  0.125
Gunn i (0.79)  0.095
Gunn z (0.91)  0.075
Spinrad R_S (0.69)  0.117
Stromgren u (0.35)  0.263
Stromgren b (0.47)  0.205
Stromgren v (0.41)  0.232
Stromgren beta (0.49)  0.194
Stromgren y (0.55)  0.164
SDSS u (0.36)  0.259
SDSS g (0.47)  0.202
SDSS r (0.62)  0.139
SDSS i (0.75)  0.104
SDSS z (0.89)  0.077
DSS-II g (0.46)  0.206
DSS-II r (0.65)  0.127
DSS-II i (0.81)  0.091
PS1 g (0.49)  0.194
PS1 r (0.62)  0.139
PS1 i (0.75)  0.103
PS1 z (0.87)  0.081
PS1 y (0.97)  0.066
PS1 w (0.62)  0.143
LSST u (0.37)  0.253
LSST g (0.48)  0.198
LSST r (0.62)  0.139
LSST i (0.75)  0.103
LSST z (0.87)  0.081
LSST y (0.97)  0.066
WFPC2 F300W (0.31)  0.299
WFPC2 F450W (0.46)  0.208
WFPC2 F555W (0.54)  0.168
WFPC2 F606W (0.60)  0.147
WFPC2 F702W (0.69)  0.119
WFPC2 F814W (0.79)  0.095
WFC3 F105W (1.04)  0.059
WFC3 F110W (1.12)  0.054
WFC3 F125W (1.23)  0.044
WFC3 F140W (1.37)  0.037
WFC3 F160W (1.53)  0.031
WFC3 F200LP (0.55)  0.181
WFC3 F218W (0.22)  0.474
WFC3 F225W (0.24)  0.427
WFC3 F275W (0.27)  0.335
WFC3 F300X (0.29)  0.319
WFC3 F336W (0.34)  0.272
WFC3 F350LP (0.59)  0.160
WFC3 F390W (0.40)  0.238
WFC3 F438W (0.43)  0.221
WFC3 F475W (0.48)  0.198
WFC3 F475X (0.50)  0.190
WFC3 F555W (0.53)  0.174
WFC3 F600LP (0.74)  0.109
WFC3 F606W (0.59)  0.152
WFC3 F625W (0.62)  0.138
WFC3 F775W (0.76)  0.100
WFC3 F814W (0.80)  0.094
WFC3 F850LP (0.91)  0.074
ACS clear (0.62)  0.149
ACS F435W (0.43)  0.220
ACS F475W (0.48)  0.200
ACS F550M (0.56)  0.160
ACS F555W (0.54)  0.170
ACS F606W (0.59)  0.151
ACS F625W (0.63)  0.135
ACS F775W (0.77)  0.099
ACS F814W (0.80)  0.093
ACS F850LP (0.90)  0.076
DES g (0.48)  0.198
DES r (0.64)  0.133
DES i (0.78)  0.097
DES z (0.91)  0.074
DES Y (0.99)  0.065


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] 0.335 0.266 0.205 0.165 0.120 0.318 0.234 0.170 0.129 0.091 0.056 0.036 0.023 0.009


Galactic Extinction based on H I Column Densities and Galaxy Counts 
(Burstein & Heiles; 1982AJ.....87.1165B) assuming R_v = 3.1:
A_B = 0.120 mag 

See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 2945 (Back to INDEX)

Helio. Radial Velocity     :      4630 +/-       15 km/s      
Redshift                   :  0.015444 +/- 0.000050        1991RC3.9.C...0000d
Major Diameter (arcmin)    :   1.6
Minor Diameter (arcmin)    :   1.2
Magnitude and Filter       : 13.22
Classifications            : SA0-:          AGN  

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:
4 Redshift data point(s)      32 photometric data point(s)      17 Diameter data point(s)

QUANTITIES DERIVED FROM REDSHIFT for NGC 2945 (Details)(Back to INDEX)

Calculated and Corrected Velocities
V (Heliocentric)           :    4630 +/-     15 km/s      1991RC3.9.C...0000d
V (Kinematic LSR)          :    4617 +/-     15 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    4423 +/-     17 km/s      1991RC3.9.C...0000d
V (Local Group)            :    4345 +/-     23 km/s      1996AJ....111..794K
V (3K CMB)                 :    4960 +/-     28 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    4509 +/-     25 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    4970 +/-     41 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    4992 +/-     41 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where H_o =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    60.6 +/-    4.2 Mpc      (m-M) = 33.91 +/- 0.15 mag
D (Local Group)            :    59.5 +/-    4.2 Mpc      (m-M) = 33.87 +/- 0.15 mag
D (3K CMB)                 :    67.9 +/-    4.8 Mpc      (m-M) = 34.16 +/- 0.15 mag
D (Virgo Infall only)      :    61.8 +/-    4.3 Mpc      (m-M) = 33.95 +/- 0.15 mag
D (Virgo + GA only)        :    68.1 +/-    4.8 Mpc      (m-M) = 34.17 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    68.4 +/-    4.8 Mpc      (m-M) = 34.17 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     294 pc/arcsec =  0.294 kpc/arcsec =  17.63 kpc/arcmin =   1.06 Mpc/degree
Scale (Local Group)        :     289 pc/arcsec =  0.289 kpc/arcsec =  17.31 kpc/arcmin =   1.04 Mpc/degree
Scale (3K CMB)             :     329 pc/arcsec =  0.329 kpc/arcsec =  19.76 kpc/arcmin =   1.19 Mpc/degree
Scale (Virgo Infall only)  :     299 pc/arcsec =  0.299 kpc/arcsec =  17.97 kpc/arcmin =   1.08 Mpc/degree
Scale (Virgo + GA only)    :     330 pc/arcsec =  0.330 kpc/arcsec =  19.81 kpc/arcmin =   1.19 Mpc/degree
Scale(Virgo + GA + Shapley):     332 pc/arcsec =  0.332 kpc/arcsec =  19.89 kpc/arcmin =   1.19 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 =  5.027 arcmin  
and Selected Redshift, defined by the Velocity Range:
from  to km/sec where V(Heliocentric) =   4630 km/sec  






Cosmology-Corrected Quantities [H_o =  73.00 km/sec/Mpc, Ω_matter =   0.27, Ω_vacuum =   0.73]
[Redshift 0.016544 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation]
Luminosity Distance        : 68.8 Mpc      (m-M) = 34.19 mag
Angular-Size Distance      : 66.6 Mpc      (m-M) = 34.12 mag
Co-Moving Radial Distance  : 67.7 Mpc      (m-M) = 34.15 mag
Co-Moving Tangential Dist. : 67.7 Mpc      (m-M) = 34.15 mag
Co-Moving Volume           : 0.0013 Gpc^3
Light Travel-Time          :    0.219 Gyr
Age at Redshift 0.016544   :   13.080 Gyr
Age of Universe            :   13.299 Gyr
Scale (Cosmology Corrected):     323 pc/arcsec =  0.323 kpc/arcsec =  19.38 kpc/arcmin =   1.16 Mpc/degree
Surface Brightness Dimming : Flux Density per Unit Area =  0.93647; Magnitude per Unit Area = 0.07126 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 2945 (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)]
Ultraviolet	NUV (GALEX) AB	17.1398 +/- 0.0390639 mag	2012GASC..C...0000S	-17.41 +/- 0.64 [mag]	1.35E+09 +/- 3.47E+08
Visual	R (Cousins) (R_T)	11.58 +/- 0.09 mag	1989ESOLV.C...0000L	-22.97 +/- 0.64 [mag]	6.99E+10 +/- 1.87E+10
Near-Infrared	H	9.764 +/- 0.023 mag	20032MASX.C.......:	-24.79 +/- 0.63 [mag]	4.80E+10 +/- 1.22E+10
Mid-Infrared	12 microns (IRAS)	<1.291E-01 Jy	1990IRASF.C...0000M	< 2.57E+36 [W]	< 6.69E+09
Far-Infrared	100 microns (IRAS)	9.602E-01 +/- 18 % Jy	1990IRASF.C...0000M	2.30E+36 +/- 7.15E+35 [W]	5.97E+09 +/- 1.86E+09
Radio	1.4GHz	37.5 +/- 1.2 milliJy	1998AJ....115.1693C	4.19E+31 +/- 1.07E+31 [W]	1.09E+05 +/- 2.78E+04

NOTE: The above quantities are derived using an estimated Distance Modulus of (34.55 +/- 0.39) mag corresponding to
a Metric Distance of (81.650 +/- 14.637) 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 32 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 2945 (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]
ESO-LV "Quick Blue" IIa-O	171.79	135.71	157	27.0 B-mag arcsec^-2^	1989ESOLV.C...0000L	68.00	53.72
K_s (2MASS "total")	89.40	78.67	165	Diameter for "total" magnitude 20032MASX.C.......:	20032MASX.C.......:	35.39	31.14

NOTE: Physical diameters are derived using a scale of 0.3958 kpc/arcsec based on Average NED-D Metric Distance of (81.650 +/- 14.637) Mpc.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 17 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 2945 Help (Back to INDEX)

Resources for Object Names	Site/Service
Query SIMBAD by primary NED object name -- NGC 2945	SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 2945	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
ESO/Uppsala Survey -- ESO 565- G 028	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Morphological Catalog of Galaxies -- MCG -04-23-010	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J09374111-2202064	NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J0937411-220211	NASA/IPAC Infrared Science Archive (IRSA)
IRAS Faint Source Catalog -- IRAS F09354-2148	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
The ESO-LV catalog-- ESO-LV 5650280	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query 6dF Galaxy Redshift Survey -- 6dF J0937410-220206	6dF Galaxy Redshift Survey
Query 6dF Galaxy Redshift Survey -- 6dF J0937411-220206	6dF Galaxy Redshift Survey
Catalogue of Principal Galaxies -- PGC 027418	VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 027418	The Lyon/Meudon Extragalactic Database (LEDA)
	NRAO/VLA Sky Survey (NVSS)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 2945	GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 2945	NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 09h37m41.1s, -22d02m06s (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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NED results for object NGC 2945

1 objects found in NED.

Detailed information for each object