INDEX for MESSIER 108 | |||
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Detailed Data (NED queries): |
ESSENTIAL NOTE for MESSIER 108 (Back to INDEX)N/A |
CROSS-IDENTIFICATIONS for MESSIER 108 (Back to INDEX)
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COORDINATES for MESSIER 108 (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) 167.149857 55.945851 11h08m35.96s +55d56m45.1s 1.25E+00 1.25E+00 0 Equatorial (J2000.0) 167.879042 55.674111 11h11m30.97s +55d40m26.8s 1.25E+00 1.25E+00 0 Ecliptic (B1950.0) 140.885937 45.279886 1.25E+00 1.25E+00 0 Ecliptic (J2000.0) 141.589827 45.283566 1.25E+00 1.25E+00 0 Galactic 148.314482 56.251842 1.25E+00 1.25E+00 0 SuperGalactic 56.942028 -0.762173 1.25E+00 1.25E+00 0Additional detailed measurements with references are also available by clicking below: 31 Position data point(s) |
REDSHIFT-INDEPENDENT DISTANCES for MESSIER 108 (Back to INDEX) 21 Distances found in NED View 21 Individual Distance Measurement(s) for MESSIER 108 Summary Statistics computed by NED from 21 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 MESSIER 108 (Back to INDEX)
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FOREGROUND GALACTIC EXTINCTION for MESSIER 108 (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 = 0.000 mag See Notes on Galactic Extinction for important caveats. |
BASIC DATA for MESSIER 108 (Back to INDEX)Helio. Radial Velocity : 699 +/- 9 km/s Redshift : 0.002332 +/- 0.000030 1975ApJ...198..527S Major Diameter (arcmin) : 8.7 Minor Diameter (arcmin) : 2.2 Magnitude and Filter : 10.69 Classifications : SB(s)cd HII NOTE: This information is indicative only. With the exception of the |
QUANTITIES DERIVED FROM REDSHIFT for MESSIER 108 (Details)(Back to INDEX)Calculated and Corrected Velocities V (Heliocentric) : 699 +/- 9 km/s 1975ApJ...198..527S V (Kinematic LSR) : 705 +/- 9 km/s 1986MNRAS.221.1023K V (Galactocentric GSR) : 768 +/- 9 km/s 1991RC3.9.C...0000d V (Local Group) : 780 +/- 10 km/s 1996AJ....111..794K V (3K CMB) : 870 +/- 15 km/s 1996ApJ...473..576F V (Virgo Infall only) : 965 +/- 16 km/s 2000ApJ...529..786M V (Virgo + GA only) : 1029 +/- 17 km/s 2000ApJ...529..786M V (Virgo + GA + Shapley) : 1035 +/- 17 km/s 2000ApJ...529..786M Hubble Flow Distance and Distance Modulus (where Ho = 73.0 +/- 5 km/sec/Mpc) D (Galactocentric GSR) : 10.53 +/- 0.75 Mpc (m-M) = 30.11 +/- 0.15 mag D (Local Group) : 10.69 +/- 0.76 Mpc (m-M) = 30.15 +/- 0.15 mag D (3K CMB) : 11.91 +/- 0.86 Mpc (m-M) = 30.38 +/- 0.15 mag D (Virgo Infall only) : 13.22 +/- 0.95 Mpc (m-M) = 30.61 +/- 0.15 mag D (Virgo + GA only) : 14.09 +/- 1.00 Mpc (m-M) = 30.74 +/- 0.15 mag D (Virgo + GA + Shapley) : 14.18 +/- 1.00 Mpc (m-M) = 30.76 +/- 0.15 mag Scale at Hubble Flow Distances Scale (Galactocentric GSR) : 51 pc/arcsec = 0.051 kpc/arcsec = 3.06 kpc/arcmin = 0.18 Mpc/degree Scale (Local Group) : 52 pc/arcsec = 0.052 kpc/arcsec = 3.11 kpc/arcmin = 0.19 Mpc/degree Scale (3K CMB) : 58 pc/arcsec = 0.058 kpc/arcsec = 3.46 kpc/arcmin = 0.21 Mpc/degree Scale (Virgo Infall only) : 64 pc/arcsec = 0.064 kpc/arcsec = 3.84 kpc/arcmin = 0.23 Mpc/degree Scale (Virgo + GA only) : 68 pc/arcsec = 0.068 kpc/arcsec = 4.10 kpc/arcmin = 0.25 Mpc/degree Scale(Virgo + GA + Shapley): 69 pc/arcsec = 0.069 kpc/arcsec = 4.12 kpc/arcmin = 0.25 Mpc/degree |
QUICK-LOOK PHOTOMETRY and LUMINOSITIES for MESSIER 108 (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 (9.580 +/- 3.205) 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 140 Photometric data point(s) available in NED. |
QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for MESSIER 108 (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. |