NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-25 T18:18:03 PDT
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Redshift data point(s) for object NGC 1781

3 redshift data point(s) found in NED.


No.Frequency Targeted km/s +/- unc z +/- uncReference Code
0   4990   29   0.016645   0.000097   1991ApJS...75..935d
1 Optical 4990   29   0.016645   0.000097   1991ApJS...75..935d
2 Optical 4969   45   0.016575   0.000150   20096dF...C...0000J
3 Optical lines 4990     0.016645     1991RC3.9.C...0000d

Detailed information for each entry

No. 1
Name in publication  : ESO 553- G 007                
Coordinates          : 050543.                  -1815.3          B1950
Features targeted    : Optical                       
Velocity or redshift :  4990           km/s                     z=   0.016645
Uncertainty          : +/-29                                    +/-  0.000097
Unc. Significance    : estimated error
Reference Code       : 1991ApJS...75..935d

Measurement Mode     :
    Spectral range   : Optical
    Features         :   Both absorption and emission lines
    Technique        : Cross-correlation fit to template spectrum
    Spatial mode     : Redshift is systemic

Reference Frame      : Heliocentric velocity or redshift
Qualifiers           : From new, raw data

NED Comment          :                                         



No. 2 Name in publication : 6dF J0507550-181124 Coordinates : 050755.03 -181123.7 J2000 Features targeted : Optical Velocity or redshift : 4969 km/s z= 0.016575 Uncertainty : +/-45 +/- 0.000150 Unc. Significance : uncertainty Reference Code : 20096dF...C...0000J Measurement Mode : Spectral range : Optical Spectrograph : Fiber-optic feed Features : Both absorption and emission lines Technique : Cross-correlation fit to template spectrum Spatial mode : Redshift is systemic Reference Frame : Heliocentric velocity or redshift Qualifiers : From new, raw data NED Comment :


No. 3 Name in publication : ESO 553- G 007 Coordinates : 050543.0 -181518 B1950 Features targeted : Optical lines Velocity or redshift : 4990 km/s z= 0.016645 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 1991RC3.9.C...0000d Measurement Mode : Spectral range : Optical Reference Frame : Heliocentric velocity or redshift Qualifiers : Homogenized from new and previously published data NED Comment :



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