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Date and Time of the Query: 2019-04-18 T05:49:43 PDT
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Redshift data point(s) for object NGC 6917

4 redshift data point(s) found in NED.


No.Frequency Targeted km/s +/- unc z +/- uncReference Code
0   4692   6   0.015651   0.000020   1993A&AS..102...57B
1 21-cm 4692   6   0.015651   0.000020   1998A&AS..130..333T
2 Optical 4692   6   0.015651   0.000020   1999ApJS..121..287H
3 Optical 4649   52   0.015507   0.000173   2000UZC...C......0F
4 4692     0.015651     2013ApJ...771...88L

Detailed information for each entry

No. 1
Name in publication  : PGC 064715                    
Coordinates          : 202502.                  +075558.         B1950
Features targeted    : 21-cm                         
Velocity or redshift :  4692           km/s                     z=   0.015651
Uncertainty          : +/-6                                     +/-  0.000020
Unc. Significance    : mean error
Reference Code       : 1998A&AS..130..333T

Measurement Mode     :
    Spectral range   : Radio
    Spectrograph     : Heterodyne receiver(e.g., 21-cm)
    Features         : 1 Emission lines
    Technique        : Mid-point of line profile at 20% lvel
    Spatial mode     : Redshift is systemic

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

NED Comment          :                                         



No. 2 Name in publication : NGC 6917 Coordinates : 202502.0 075558. B1950 Features targeted : Optical Velocity or redshift : 4692 km/s z= 0.015651 Uncertainty : +/-6 +/- 0.000020 Unc. Significance : uncertainty Reference Code : 1999ApJS..121..287H Measurement Mode : Spectral range : Optical Technique : Cross-correlation fit to template spectrum Spatial mode : Redshift is systemic Reference Frame : Heliocentric velocity or redshift Qualifiers : Homogenized from new and previously published data NED Comment :


No. 3 Name in publication : UZC J202728.4+080553 Coordinates : 202728.4 +080553. J2000 Features targeted : Optical Velocity or redshift : 4649 km/s z= 0.015507 Uncertainty : +/-52 +/- 0.000173 Unc. Significance : uncertainty Reference Code : 2000UZC...C......0F 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 reprocessed raw data NED Comment :


No. 4 Name in publication : NGC 6917 Coordinates : 202728.3594 +080553.145 J2000 Features targeted : Velocity or redshift : 4692 km/s z= 0.015651 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 2013ApJ...771...88L Measurement Mode : Reference Frame : Heliocentric velocity or redshift Qualifiers : Uncertain origin NED Comment :



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