SOURCE LISTRow 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 4638 12h42m47.4s +11d26m33s G 1152 0.003843 12.1g ... 263 9 65 25 13 12 0 Retrieve Retrieve 1 |
INDEX for NGC 4638 | |||
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Detailed Data (NED queries): |
ESSENTIAL NOTE for NGC 4638 (Back to INDEX)Identification as NGC 4667 is not certain. |
CROSS-IDENTIFICATIONS for NGC 4638 (Back to INDEX)
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COORDINATES for NGC 4638 (Back to INDEX) Position Reference:2007SDSS6.C...0000: Reference Frame Longitude Latitude RA DEC Uncertainty Ellipse (arcsec) (degrees) (degrees) Semimajor Semiminor PA(deg) Equatorial (B1950.0) 190.067217 11.716330 12h40m16.132s +11d42m58.79s 5.00E-01 5.00E-01 0 Equatorial (J2000.0) 190.697602 11.442507 12h42m47.424s +11d26m33.03s 5.00E-01 5.00E-01 0 Ecliptic (B1950.0) 184.521144 14.738183 5.00E-01 5.00E-01 0 Ecliptic (J2000.0) 185.221367 14.737103 5.00E-01 5.00E-01 0 Galactic 295.135708 74.183189 5.00E-01 5.00E-01 0 SuperGalactic 104.613504 0.195029 5.00E-01 5.00E-01 0Additional detailed measurements with references are also available by clicking below: 25 Position data point(s) |
REDSHIFT-INDEPENDENT DISTANCES for NGC 4638 (Back to INDEX) 17 Distances found in NED View 17 Individual Distance Measurement(s) for NGC 4638 Summary Statistics computed by NED from 17 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.
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CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4638 (Back to INDEX)
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FOREGROUND GALACTIC EXTINCTION for NGC 4638 (Back to INDEX)Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration
For completeness, we include the original SFD98 values:
Galactic Extinction based on H I Column Densities and Galaxy Counts (Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1: AB = 0.040 mag See Notes on Galactic Extinction for important caveats. |
BASIC DATA for NGC 4638 (Back to INDEX)Helio. Radial Velocity : 1152 +/- 5 km/s Redshift : 0.003843 +/- 0.000017 2011MNRAS.413..813C Major Diameter (arcmin) : 2.17 Minor Diameter (arcmin) : 1.27 Magnitude and Filter : 12.1g Classifications : S0- NOTE: This information is indicative only. With the exception of the |
QUANTITIES DERIVED FROM REDSHIFT for NGC 4638 (Details)(Back to INDEX)Calculated and Corrected Velocities V (Heliocentric) : 1152 +/- 5 km/s 2011MNRAS.413..813C V (Kinematic LSR) : 1157 +/- 5 km/s 1986MNRAS.221.1023K V (Galactocentric GSR) : 1103 +/- 5 km/s 1991RC3.9.C...0000d V (Local Group) : 1051 +/- 8 km/s 1996AJ....111..794K V (3K CMB) : 1476 +/- 23 km/s 1996ApJ...473..576F V (Virgo Infall only) : 957 +/- 10 km/s 2000ApJ...529..786M V (Virgo + GA only) : 1012 +/- 11 km/s 2000ApJ...529..786M V (Virgo + GA + Shapley) : 1012 +/- 11 km/s 2000ApJ...529..786M Note:Object in Virgo Cluster (Radius = 10 deg; Velocity Range = 600-2300 km/sec) Virgo Cluster mean velocity (957 km/sec) assigned. See Local Velocity Field Model details Hubble Flow Distance and Distance Modulus (where Ho = 73.0 +/- 5 km/sec/Mpc) D (Galactocentric GSR) : 15.1 +/- 1.1 Mpc (m-M) = 30.90 +/- 0.15 mag D (Local Group) : 14.4 +/- 1.0 Mpc (m-M) = 30.79 +/- 0.15 mag D (3K CMB) : 20.2 +/- 1.5 Mpc (m-M) = 31.53 +/- 0.15 mag D (Virgo Infall only) : 13.1 +/- 0.9 Mpc (m-M) = 30.59 +/- 0.15 mag D (Virgo + GA only) : 13.9 +/- 1.0 Mpc (m-M) = 30.71 +/- 0.15 mag D (Virgo + GA + Shapley) : 13.9 +/- 1.0 Mpc (m-M) = 30.71 +/- 0.15 mag Scale at Hubble Flow Distances Scale (Galactocentric GSR) : 73 pc/arcsec = 0.073 kpc/arcsec = 4.39 kpc/arcmin = 0.26 Mpc/degree Scale (Local Group) : 70 pc/arcsec = 0.070 kpc/arcsec = 4.19 kpc/arcmin = 0.25 Mpc/degree Scale (3K CMB) : 98 pc/arcsec = 0.098 kpc/arcsec = 5.88 kpc/arcmin = 0.35 Mpc/degree Scale (Virgo Infall only) : 64 pc/arcsec = 0.064 kpc/arcsec = 3.81 kpc/arcmin = 0.23 Mpc/degree Scale (Virgo + GA only) : 67 pc/arcsec = 0.067 kpc/arcsec = 4.03 kpc/arcmin = 0.24 Mpc/degree Scale(Virgo + GA + Shapley): 67 pc/arcsec = 0.067 kpc/arcsec = 4.03 kpc/arcmin = 0.24 Mpc/degree |
QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 4638 (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).
a Metric Distance of (15.565 +/- 3.796) 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 65 Photometric data point(s) available in NED. |
QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 4638 (Back to INDEX) The largest diameters in the Visual and Near-Infrared spectral regions, when available:
The quantities quoted above have not necessarily been corrected for foreground extinction. View details for 12 Diameter data point(s) available in NED. |