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Home » Search Objects » By Name

Help Detailed Information for a Named Object

Search Options
Cosmological Parameters

Results for object NGC 7421 (ngc7421)

  • Overview
  • Cross-IDs (27)
  • Coordinates (10)
  • Redshifts (8)
  • Distances (4)
  • Classifications (30)
  • Galactic Extinctions
  • Notes (7)
  • Diameters (18)
  • Photometry & SED (49)
  • Spectra (2)
  • Images (14)
  • References (105)
  • External Links
SED Plot Loading...
IRSA FinderChart ImagePOSS-II F (North), AAO-SES/SERC-ER (South), Red image
Search images
Image Credit: Caltech or AAO/ROE

Selected data and derived quantities for NGC 7421†.  More information in the tabs above.
Cross-identificationsEssential note
; ; ; ;
Coordinates for Preferred Position
Equatorial (J2000)Galactic
RA, DecRA, Dec [Deg]Unc Semi-major,minor ["]Unc PA [deg]ReferenceLon, Lat [deg]
, , , ,
Preferred Redshift & Derived Quantities [H0 = 73 km/sec/Mpc], Ωmatter = 0.27, Ωvacuum = 0.73]Redshift-independent Distances
z (Helio)V (Helio) [km/s]ReferenceV (CMB) [km/s]Hubble Distance (CMB) [Mpc]# Measurements
+/- +/- +/- +/-
Classifications
Object TypeMorphologyReferenceActivity TypeReferenceOther
G
Quick-look Angular & Physical DiametersForeground Galactic Extinction (2011ApJ...737..103S)
PassbandDiameter ["]ReferenceDiameter [kpc]Aλ [mag] VAλ [mag] K
Quick-look Photometry & Luminosities (brightest flux in each spectral region)
Spectral regionBandApparent mag or fluxReferenceAbsolute Mag or νLν [W]νLν [L☉(bol)]
X-Ray
UV
Visible
Near-IR
Far-IR
Radio
 †Derived quantities are based on the median redshift-independent distance when available, otherwise the preferred redshift is used with the selected cosmological parameters (which can be changed in search options).
 Cosmological params can be changed in search options.
Cross-identifications for NGC 7421
Coordinates for NGC 7421
Preferred Position:    Equatorial J2000.0  ()
Preferred Position of NGC 7421
Reference FrameLongitudeLatitudeLongitudeLatitudeUncertainty Ellipse (arcsec)
Decimal DegreesDecimal DegreesSexagesimalSexagesimalSemimajor (a)Semiminor (b)PA (deg)
RA/Dec Equatorial (J2000.0)
RA/Dec Equatorial (B1950.0)
Galactic
Supergalactic
Ecliptic (J2000.0)
Ecliptic (B1950.0)
Measured Positions for NGC 7421
Redshifts and Derived Quantities for NGC 7421
Preferred Redshift: Z = , H0 = 73 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73
Quantities Derived from Preferred Redshift for NGC 7421 
Calculated and Corrected Velocities
TypeVelocitiesReference
V (Heliocentric) ± km/s
V (Kinematic LSR) ± km/s
V (Galactocentric GSR) ± km/s
V (Local Group) ± km/s
V (3K CMB) ± km/s
V (Virgo Infall only) ± km/s
V (Virgo + GA only) ± km/s
V (Virgo + GA + Shapley) ± km/s
Hubble Flow Distance and Distance Modulus (where H0 = 73 km/sec/Mpc ± km/sec/Mpc)
TypeDistanceModulus
D (Galactocentric GSR) ± Mpc(m-M) = ± mag
D (Local Group) ± Mpc(m-M) = ± mag
D (3K CMB) ± Mpc(m-M) = ± mag
D (Virgo Infall only) ± Mpc(m-M) = ± mag
D (Virgo + GA only) ± Mpc(m-M) = ± mag
D (Virgo + GA + Shapley) ± Mpc(m-M) = ± mag
Scale at Hubble Flow Distances
TypeValues
Scale (Galactocentric GSR) pc/arcsec = kpc/arcsec = kpc/arcmin = Mpc/degree
Scale (Local Group) pc/arcsec = kpc/arcsec = kpc/arcmin = Mpc/degree
Scale (3K CMB) pc/arcsec = kpc/arcsec = kpc/arcmin = Mpc/degree
Scale (Virgo Infall only) pc/arcsec = kpc/arcsec = kpc/arcmin = Mpc/degree
Scale (Virgo + GA only) pc/arcsec = kpc/arcsec = kpc/arcmin = Mpc/degree
Scale (Virgo + GA + Shapley) pc/arcsec = kpc/arcsec = kpc/arcmin = Mpc/degree
Cosmology-Corrected Quantities [H0 = 73 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73]
[Redshift as corrected to the Reference Frame defined by the 3K CMB]
TypeValues
Luminosity Distance Mpc (m-M) = mag
Angular-Size Distance (m-M) = mag
Co-Moving Radial Distance (m-M) = mag
Co-Moving Tangential Distance (m-M) = mag
Co-Moving Volume Gpc^3
Light Travel-Time Gyr
Age at Redshift Gyr
Age of Universe Gyr
Scale (Cosmology Corrected) pc/arcsec = kpc/arcsec = kpc/arcmin = Mpc/degree
Surface Brightness DimmingFlux Density per Unit Area = ; Magnitude per Unit Area = mag
Measured Redshifts of NGC 7421
See also Distances.
Redshift-independent Distances for NGC 7421
See also Redshifts.
Classifications for NGC 7421
Galaxy Extinctions for NGC 7421
Notes for NGC 7421
Measured Diameters for NGC 7421
Photometry & SED for NGC 7421
Quick-look Photometry & SED plot for NGC 7421
Quick Look Photometry & Luminosities (brightest flux in each spectral region)
SED Plot
Photometry for NGC 7421
See also Spectra.

Images for object NGC 7421 (ngc7421)

IRSA FinderChart ImagePOSS-II F (North), AAO-SES/SERC-ER (South), Red image
View in IRSA Finderchart

Image Credit: Caltech or AAO/ROE

Preview File Size
KB
Information Lambda
m
Clambda Spectral Region Band FOV 1
arcmin
FOV 2
arcmin
Res.
arcsec
Telescope Refcode
Preview File Size
KB
Information Lambda
m
Clambda Spectral Region Band FOV 1
arcmin
FOV 2
arcmin
Res.
arcsec
Telescope Refcode
Literature References for NGC 7421
External Resource Links for NGC 7421
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