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 4494 12h31m24.1s +25d46m31s G 1342 0.004476 10.71 ... 413 15 72 25 17 7 0 Retrieve Retrieve 1 |
INDEX for NGC 4494 | |||
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Detailed Data (NED queries): |
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)
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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 0Additional detailed measurements with references are also available by clicking below: 25 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.
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CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4494 (Back to INDEX)
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FOREGROUND GALACTIC EXTINCTION for NGC 4494 (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 = 0.050 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 |
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 Ho = 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 |
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).
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:
The quantities quoted above have not necessarily been corrected for foreground extinction. View details for 7 Diameter data point(s) available in NED. |