INDEX for NGC 7718 | ||||||
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Detailed Data (NED queries):
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ESSENTIAL NOTE for NGC 7718 (Back to INDEX)N/A |
CROSS-IDENTIFICATIONS for NGC 7718 (Back to INDEX)
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COORDINATES for NGC 7718 (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) 353.893637 25.442783 23h35m34.47s +25d26m34.0s 1.25E+00 1.25E+00 0 Equatorial (J2000.0) 354.520875 25.719722 23h38m05.01s +25d43m11.0s 1.25E+00 1.25E+00 0 Ecliptic (B1950.0) 5.269111 25.617377 1.25E+00 1.25E+00 0 Ecliptic (J2000.0) 5.964578 25.618512 1.25E+00 1.25E+00 0 Galactic 102.869552 -34.278086 1.25E+00 1.25E+00 0 SuperGalactic 318.086123 23.777834 1.25E+00 1.25E+00 0Additional detailed measurements with references are also available by clicking below: 7 Position data point(s) |
REDSHIFT-INDEPENDENT DISTANCES for NGC 7718 (Back to INDEX) 5 Distances found in NED View 5 Individual Distance Measurement(s) for NGC 7718 Summary Statistics computed by NED from 5 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 7718 (Back to INDEX)
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FOREGROUND GALACTIC EXTINCTION for NGC 7718 (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 = 0.080 mag See Notes on Galactic Extinction for important caveats. |
BASIC DATA for NGC 7718 (Back to INDEX)Helio. Radial Velocity : 9443 +/- 34 km/s Redshift : 0.031498 +/- 0.000113 1999ApJS..121..287H Major Diameter (arcmin) : 0.9 Minor Diameter (arcmin) : 0.6 Magnitude and Filter : 15.01 Classifications : S? NOTE: This information is indicative only. With the exception of the |
QUANTITIES DERIVED FROM REDSHIFT for NGC 7718 (Details)(Back to INDEX)Calculated and Corrected Velocities V (Heliocentric) : 9443 +/- 34 km/s 1999ApJS..121..287H V (Kinematic LSR) : 9449 +/- 34 km/s 1986MNRAS.221.1023K V (Galactocentric GSR) : 9624 +/- 35 km/s 1991RC3.9.C...0000d V (Local Group) : 9712 +/- 38 km/s 1996AJ....111..794K V (3K CMB) : 9094 +/- 42 km/s 1996ApJ...473..576F V (Virgo Infall only) : 9577 +/- 39 km/s 2000ApJ...529..786M V (Virgo + GA only) : 9352 +/- 42 km/s 2000ApJ...529..786M V (Virgo + GA + Shapley) : 9325 +/- 42 km/s 2000ApJ...529..786M Hubble Flow Distance and Distance Modulus (where Ho = 73.0 +/- 5 km/sec/Mpc) D (Galactocentric GSR) : 131.8 +/- 9.2 Mpc (m-M) = 35.60 +/- 0.15 mag D (Local Group) : 133.0 +/- 9.3 Mpc (m-M) = 35.62 +/- 0.15 mag D (3K CMB) : 124.6 +/- 8.7 Mpc (m-M) = 35.48 +/- 0.15 mag D (Virgo Infall only) : 131.2 +/- 9.2 Mpc (m-M) = 35.59 +/- 0.15 mag D (Virgo + GA only) : 128.1 +/- 9.0 Mpc (m-M) = 35.54 +/- 0.15 mag D (Virgo + GA + Shapley) : 127.7 +/- 9.0 Mpc (m-M) = 35.53 +/- 0.15 mag Scale at Hubble Flow Distances Scale (Galactocentric GSR) : 639 pc/arcsec = 0.639 kpc/arcsec = 38.35 kpc/arcmin = 2.30 Mpc/degree Scale (Local Group) : 645 pc/arcsec = 0.645 kpc/arcsec = 38.70 kpc/arcmin = 2.32 Mpc/degree Scale (3K CMB) : 604 pc/arcsec = 0.604 kpc/arcsec = 36.24 kpc/arcmin = 2.17 Mpc/degree Scale (Virgo Infall only) : 636 pc/arcsec = 0.636 kpc/arcsec = 38.16 kpc/arcmin = 2.29 Mpc/degree Scale (Virgo + GA only) : 621 pc/arcsec = 0.621 kpc/arcsec = 37.27 kpc/arcmin = 2.24 Mpc/degree Scale(Virgo + GA + Shapley): 619 pc/arcsec = 0.619 kpc/arcsec = 37.16 kpc/arcmin = 2.23 Mpc/degree |
QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 7718 (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 (151.860 +/- 37.041) 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 28 Photometric data point(s) available in NED. |
QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 7718 (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. |