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 7331 22h37m04.0s +34d24m56s G 816 0.002722 10.35 ... 915 30 260 42 29 8 0 Retrieve Retrieve 1 |
INDEX for NGC 7331 | |||
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Detailed Data (NED queries): |
ESSENTIAL NOTE for NGC 7331 (Back to INDEX)HOLM 795H is a double star; HOLM 795G,I are stars. |
CROSS-IDENTIFICATIONS for NGC 7331 (Back to INDEX)
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COORDINATES for NGC 7331 (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) 338.6940762 34.1556822 22h34m46.578s +34d09m20.46s 4.20E-01 4.20E-01 0 Equatorial (J2000.0) 339.2667242 34.4155189 22h37m04.014s +34d24m55.87s 4.20E-01 4.20E-01 0 Ecliptic (B1950.0) 356.1070660 39.3993796 4.20E-01 4.20E-01 0 Ecliptic (J2000.0) 356.8002880 39.3994647 4.20E-01 4.20E-01 0 Galactic 93.7216150 -20.7240532 4.20E-01 4.20E-01 0 SuperGalactic 328.0067370 37.0629614 4.20E-01 4.20E-01 0Additional detailed measurements with references are also available by clicking below: 42 Position data point(s) |
REDSHIFT-INDEPENDENT DISTANCES for NGC 7331 (Back to INDEX) 56 Distances found in NED View 56 Individual Distance Measurement(s) for NGC 7331 Summary Statistics computed by NED from 56 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 7331 (Back to INDEX)
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FOREGROUND GALACTIC EXTINCTION for NGC 7331 (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 = 0.330 mag See Notes on Galactic Extinction for important caveats. |
BASIC DATA for NGC 7331 (Back to INDEX)Helio. Radial Velocity : 816 +/- 1 km/s Redshift : 0.002722 +/- 0.000004 1998AJ....115...62H Major Diameter (arcmin) : 10.5 Minor Diameter (arcmin) : 3.7 Magnitude and Filter : 10.35 Classifications : SA(s)b;HII LINER NOTE: This information is indicative only. With the exception of the |
QUANTITIES DERIVED FROM REDSHIFT for NGC 7331 (Details)(Back to INDEX)Calculated and Corrected Velocities V (Heliocentric) : 816 +/- 1 km/s 1998AJ....115...62H V (Kinematic LSR) : 827 +/- 1 km/s 1986MNRAS.221.1023K V (Galactocentric GSR) : 1030 +/- 9 km/s 1991RC3.9.C...0000d V (Local Group) : 1119 +/- 18 km/s 1996AJ....111..794K V (3K CMB) : 490 +/- 23 km/s 1996ApJ...473..576F V (Virgo Infall only) : 1095 +/- 18 km/s 2000ApJ...529..786M V (Virgo + GA only) : 1054 +/- 18 km/s 2000ApJ...529..786M V (Virgo + GA + Shapley) : 1052 +/- 18 km/s 2000ApJ...529..786M Hubble Flow Distance and Distance Modulus (where Ho = 73.0 +/- 5 km/sec/Mpc) D (Galactocentric GSR) : 14.1 +/- 1.0 Mpc (m-M) = 30.75 +/- 0.15 mag D (Local Group) : 15.3 +/- 1.1 Mpc (m-M) = 30.93 +/- 0.15 mag D (3K CMB) : 6.7 +/- 0.6 Mpc (m-M) = 29.14 +/- 0.18 mag D (Virgo Infall only) : 15.0 +/- 1.1 Mpc (m-M) = 30.88 +/- 0.15 mag D (Virgo + GA only) : 14.4 +/- 1.0 Mpc (m-M) = 30.80 +/- 0.15 mag D (Virgo + GA + Shapley) : 14.4 +/- 1.0 Mpc (m-M) = 30.79 +/- 0.15 mag Scale at Hubble Flow Distances Scale (Galactocentric GSR) : 68 pc/arcsec = 0.068 kpc/arcsec = 4.10 kpc/arcmin = 0.25 Mpc/degree Scale (Local Group) : 74 pc/arcsec = 0.074 kpc/arcsec = 4.46 kpc/arcmin = 0.27 Mpc/degree Scale (3K CMB) : 33 pc/arcsec = 0.033 kpc/arcsec = 1.95 kpc/arcmin = 0.12 Mpc/degree Scale (Virgo Infall only) : 73 pc/arcsec = 0.073 kpc/arcsec = 4.36 kpc/arcmin = 0.26 Mpc/degree Scale (Virgo + GA only) : 70 pc/arcsec = 0.070 kpc/arcsec = 4.20 kpc/arcmin = 0.25 Mpc/degree Scale(Virgo + GA + Shapley): 70 pc/arcsec = 0.070 kpc/arcsec = 4.19 kpc/arcmin = 0.25 Mpc/degree |
QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 7331 (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 (13.444 +/- 2.650) 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 260 Photometric data point(s) available in NED. |
QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 7331 (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 8 Diameter data point(s) available in NED. |