[M1]

NED data for the Crab Nebula, M1

These data were downloaded from the NASA/IPAC Extragalactic Database (NED). The NED database contains most up-to-date data, plus references, at this data file.

Although the Crab Nebula is a galactic object, NED has data on this (and other) supernova remnants. Our file was downloaded on May 22, 2000.

Object Names                   Type      Object Names                   Type  
MESSIER 001                    SNR       PKS J0534+2200                 RadioS
NGC 1952                       SNR       87GB[BWE91] 0531+2159          RadioS
Crab SNR                       RadioS    PSR B0531+21                   RadioS
IRAS  05315+2158               IrS       PSR J0534+2200                 Psr   
3C 144                         RadioS    DA 179                         RadioS
4C +21.19                      RadioS    TXS 0531+219                   RadioS
PKS 0531+21                    RadioS    VRO 21.05.01                   RadioS
PKS B0531+219                  RadioS    Cul 0531+219                   RadioS
PKS B0531+219 ID               SNR       4U 0531+21                     XrayS 

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                                Major     Minor   PA(deg)
Equatorial (B1950.0)   82.893342   21.977822  05h31m34.40s  +21d58m40.2s  1.80E+00  1.60E+00   90
Equatorial (J2000.0)   83.645585   22.010445  05h34m34.94s  +22d00m37.6s  1.80E+00  1.60E+00   90
Ecliptic   (B1950.0)   83.410452   -1.305511                              1.80E+00  1.60E+00   93
Ecliptic   (J2000.0)   84.108907   -1.298994                              1.80E+00  1.60E+00   93
Galactic              184.567173   -5.776658                              1.80E+00  1.60E+00   32
SuperGalactic         358.332246  -47.443769                              1.80E+00  1.60E+00  119

Basic Data

Galactic Extinction (Schlegel et al.):   A_B = 6.732 mag; 1998ApJ...500..525S
 E(B-V) = 1.560 mag. The following values assume an R_V = 3.1 extinction curve.
 See Cardelli et al. (1989ApJ...345..245C) for other conversion factors.
 Bandpass           U     B     V     R     I     J     H     K     L'
 Wavelength [um]  0.34  0.44  0.54  0.65  0.80  1.27  1.67  2.22  3.81
 A_lambda  [mag]  8.478 6.732 5.172 4.170 3.027 1.407 0.899 0.573 0.239

Hartmut Frommert
Christine Kronberg
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Last Modification: May 22, 2000