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 *IC 4871 19h35m42.2s -57d31m09s G 1925 0.006422 14.00 ... 58 9 36 8 9 16 0 Retrieve Retrieve 1 |
INDEX for IC 4871 | |||
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Detailed Data (NED queries): |
ESSENTIAL NOTE for IC 4871 (Back to INDEX)6dF DR2 has z = 0.149518. |
CROSS-IDENTIFICATIONS for IC 4871 (Back to INDEX)
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COORDINATES for IC 4871 (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) 292.882920 -57.629833 19h31m31.90s -57d37m47.4s 1.25E+00 1.25E+00 0 Equatorial (J2000.0) 293.925958 -57.519222 19h35m42.23s -57d31m09.2s 1.25E+00 1.25E+00 0 Ecliptic (B1950.0) 284.788635 -35.353360 1.25E+00 1.25E+00 0 Ecliptic (J2000.0) 285.488870 -35.359483 1.25E+00 1.25E+00 0 Galactic 339.760395 -28.450084 1.25E+00 1.25E+00 0 SuperGalactic 212.120462 16.286218 1.25E+00 1.25E+00 0Additional detailed measurements with references are also available by clicking below: 8 Position data point(s) |
REDSHIFT-INDEPENDENT DISTANCES for IC 4871 (Back to INDEX) 22 Distances found in NED View 22 Individual Distance Measurement(s) for IC 4871 Summary Statistics computed by NED from 22 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 IC 4871 (Back to INDEX)
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FOREGROUND GALACTIC EXTINCTION for IC 4871 (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 = 0.240 mag See Notes on Galactic Extinction for important caveats. |
BASIC DATA for IC 4871 (Back to INDEX)Helio. Radial Velocity : 1925 +/- 1 km/s Redshift : 0.006422 +/- 0.000002 2004MNRAS.352..768K Major Diameter (arcmin) : 4.14 Minor Diameter (arcmin) : 0.25 Magnitude and Filter : 14.00 Classifications : SAB(s)d? sp NOTE: This information is indicative only. With the exception of the |
QUANTITIES DERIVED FROM REDSHIFT for IC 4871 (Details)(Back to INDEX)Calculated and Corrected Velocities V (Heliocentric) : 1925 +/- 1 km/s 2004MNRAS.352..768K V (Kinematic LSR) : 1925 +/- 1 km/s 1986MNRAS.221.1023K V (Galactocentric GSR) : 1859 +/- 3 km/s 1991RC3.9.C...0000d V (Local Group) : 1826 +/- 6 km/s 1996AJ....111..794K V (3K CMB) : 1847 +/- 5 km/s 1996ApJ...473..576F V (Virgo Infall only) : 1837 +/- 6 km/s 2000ApJ...529..786M V (Virgo + GA only) : 1979 +/- 12 km/s 2000ApJ...529..786M V (Virgo + GA + Shapley) : 1989 +/- 12 km/s 2000ApJ...529..786M Hubble Flow Distance and Distance Modulus (where Ho = 73.0 +/- 5 km/sec/Mpc) D (Galactocentric GSR) : 25.5 +/- 1.8 Mpc (m-M) = 32.03 +/- 0.15 mag D (Local Group) : 25.0 +/- 1.8 Mpc (m-M) = 31.99 +/- 0.15 mag D (3K CMB) : 25.3 +/- 1.8 Mpc (m-M) = 32.02 +/- 0.15 mag D (Virgo Infall only) : 25.2 +/- 1.8 Mpc (m-M) = 32.00 +/- 0.15 mag D (Virgo + GA only) : 27.1 +/- 1.9 Mpc (m-M) = 32.17 +/- 0.15 mag D (Virgo + GA + Shapley) : 27.2 +/- 1.9 Mpc (m-M) = 32.18 +/- 0.15 mag Scale at Hubble Flow Distances Scale (Galactocentric GSR) : 123 pc/arcsec = 0.123 kpc/arcsec = 7.41 kpc/arcmin = 0.44 Mpc/degree Scale (Local Group) : 121 pc/arcsec = 0.121 kpc/arcsec = 7.28 kpc/arcmin = 0.44 Mpc/degree Scale (3K CMB) : 123 pc/arcsec = 0.123 kpc/arcsec = 7.36 kpc/arcmin = 0.44 Mpc/degree Scale (Virgo Infall only) : 122 pc/arcsec = 0.122 kpc/arcsec = 7.32 kpc/arcmin = 0.44 Mpc/degree Scale (Virgo + GA only) : 131 pc/arcsec = 0.131 kpc/arcsec = 7.89 kpc/arcmin = 0.47 Mpc/degree Scale(Virgo + GA + Shapley): 132 pc/arcsec = 0.132 kpc/arcsec = 7.92 kpc/arcmin = 0.48 Mpc/degree |
QUICK-LOOK PHOTOMETRY and LUMINOSITIES for IC 4871 (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 (29.568 +/- 5.145) 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 36 Photometric data point(s) available in NED. |
QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for IC 4871 (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 16 Diameter data point(s) available in NED. |