NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2022-01-18 T21:22:33 PST
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Parameters for Distances and Cosmology: Ho= 73.0; Ωmatter = 0.27; Ωvacuum = 0.73;
Derived Quantities use a Redshift corrected to a Reference Frame defined by the 3K CMB

Detailed Information for Object No. 2

INDEX for SN 1975O
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Redshift-Independent Distances
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):
  • Images

  • Spectra   
    Redshift-Independent Distances
    30 Reference(s)   
    1 Position data point(s)

    ESSENTIAL NOTE for SN 1975O (Back to INDEX)
    N/A

    CROSS-IDENTIFICATIONS for SN 1975O (Back to INDEX)
    Object Names Type Object Names Type
    SN 1975OSN NGC 2487:SN 1975O SN

    COORDINATES for SN 1975O (Back to INDEX)

    Position Reference:1993BICDS..42...17T

    Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                           (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
    Equatorial (B1950.0)    118.8329     25.2708     07h55m20s     +25d16.3m  1.50E+02  1.50E+02    0
    Equatorial (J2000.0)    119.5878     25.1350     07h58m21s     +25d08.1m  1.50E+02  1.50E+02    0
    Ecliptic   (B1950.0)    115.9372      4.3847                              1.50E+02  1.50E+02    0
    Ecliptic   (J2000.0)    116.6359      4.3903                              1.50E+02  1.50E+02    0
    Galactic                196.2870     25.1883                              1.50E+02  1.50E+02    0
    SuperGalactic            47.4143    -46.3381                              1.50E+02  1.50E+02    0
    
    Additional detailed measurements with references are also available by clicking below:
    1 Position data point(s)

    REDSHIFT-INDEPENDENT DISTANCES for SN 1975O (Back to INDEX)

    2 Distances found in NED View 2 Individual Distance Measurement(s) for SN 1975O

    Summary Statistics computed by NED from 2 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.


    SN 1975O Distance Modulus
    (mag)
    Metric Distance
    (Mpc)
    Mean 34.32 73.150
    Std. Dev. 0.08 2.899
    Min. 34.26 71.100
    Max. 34.38 75.200
    Median 34.32 73.150

    CLASSIFICATIONS (TYPES, ATTRIBUTES) for SN 1975O (Back to INDEX)
    TypeAs PublishedNED HomogenizedFlagReference Code
    Distance IndicatorSNIaSNIa...2000ApJ...540..634P
    2 Detailed Classification(s)


    FOREGROUND GALACTIC EXTINCTION for SN 1975O (Back to INDEX)
    Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
    of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
    The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
    the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

    L a n d o l tS D S SU K I R T
    Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
    Aλ [mag]0.2180.1830.1380.1090.0760.2140.1660.1150.0860.0640.0360.0230.0150.008
    Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
    For completeness, we include the original SFD98 values:
    L a n d o l tS D S SU K I R T
    Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
    Aλ [mag]0.2820.2240.1720.1390.1010.2670.1970.1430.1080.0770.0470.0300.0190.008


    Galactic Extinction based on H I Column Densities and Galaxy Counts
    (Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
    AB = 0.130 mag
    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for SN 1975O (Back to INDEX)
    SuperNova Type             : I                   
    Magnitude at Max and Filter: 15.4 
    System                     : B    
    Date of Maximum Light      : NOV28
    Spare 5                    :         
    
    NOTE: This information is indicative only. With the exception of the
          redshift they are unreferenced and highly inhomogeneous as to
          their origin. The Radial Velocity (when available) is computed
          from the listed redshift. The remaining values are designed to
          orient the user with a quick-look, overall assessment of the
          general properties of the object in question. They are not
          averages nor are they standardized in any way.

    EXTERNAL ARCHIVES AND SERVICES for SN 1975O Help (Back to INDEX)
    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- SN 1975OSIMBAD (CDS, Strasbourg, France)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- SN 1975OGALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- SN 1975ONASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 07h58m21.1s, +25d08m06s (J2000)Site/Service
    Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
    Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
    version
    SDSS Sky Server
    Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
    Band(s): Size:
    NASA/IPAC Infrared Science Archive (IRSA)
    Band(s): Size:
    NASA/IPAC Infrared Science Archive (IRSA)
    NASA/IPAC Infrared Science Archive (IRSA)
     Size:    Contours (PS)  JPEG  FITS File 
    NRAO/VLA Sky Survey (NVSS)
        Size:     GIF     FITS File  
    Faint Images of the Radio Sky at Twenty-Centimeters
    The NRAO Data Archive System





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