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Date and Time of the Query: 2019-04-23 T12:08:08 PDT
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Redshift data point(s) for object NGC 2558

15 redshift data point(s) found in NED.


No.Frequency Targeted km/s +/- unc z +/- uncReference Code
0   4998   3   0.016672   0.000010   1997AJ....113.1197H
1 4979   2   0.016608   0.000006   2016SDSSD.C...0000:
2 4998   2   0.016672   0.000007   2000UZC...C......0F
3 21-cm 4998   3   0.016672   0.000009   2005ApJS..160..149S
4 21-cm HI line 4990   7   0.016645   0.000023   1991RC3.9.C...0000d
5 Optical features 4988   55   0.016639   0.000185   2006SDSS5.C...0000:
6 Optical 4969   80   0.016575   0.000267   1998ApJ...496...39Z
7 Optical features > 30000     0.259432   0.000825   2006SDSS5.C...0000:
8 4986     0.016633     2015MNRAS.448.3442G
9 4990     0.016645     2012ApJ...747...31R
10 4998     0.016670     2015A&A...578A..61D
11 21-cm 4998     0.016672     1997AJ....113.1197H
12 4998     0.016672     2013ApJ...771...88L
13 4999     0.016675     2015MNRAS.447.1531C
14 4999     0.016675     2016AJ....152...50T
15 4999     0.016675     2013AJ....146...86T

Detailed information for each entry

No. 1
Name in publication  :                               
Coordinates          :                                                
Features targeted    :                               
Velocity or redshift :  0.016607577                             z=   0.016608
Uncertainty          : +/-6.04114E-6                            +/-  0.000006
Unc. Significance    : uncertainty
Reference Code       : 2016SDSSD.C...0000:

Measurement Mode     :

Reference Frame      : Heliocentric velocity or redshift
Qualifiers           : Uncertain origin

NED Comment          :                                         



No. 2 Name in publication : UZC J081912.8+203038 Coordinates : 081912.8 +203038. J2000 Features targeted : Velocity or redshift : 4998 km/s z= 0.016672 Uncertainty : +/-2 +/- 0.000007 Unc. Significance : uncertainty Reference Code : 2000UZC...C......0F Measurement Mode : Spectral range : Optical Spatial mode : Redshift is systemic Reference Frame : Heliocentric velocity or redshift Qualifiers : Homogenized from previously published data NED Comment :


No. 3 Name in publication : UGC 04331 Coordinates : 081912.8 +203037 J2000 Features targeted : 21-cm Velocity or redshift : 4998 km/s z= 0.016672 Uncertainty : +/-2 +/- 0.000009 Unc. Significance : estimated error Reference Code : 2005ApJS..160..149S Measurement Mode : Spectral range : Radio Spectrograph : Heterodyne receiver(e.g., 21-cm) Features : 1 Emission lines Technique : Mid-point of line profile at 50% lvel Spatial mode : Redshift is systemic Reference Frame : Heliocentric velocity or redshift Qualifiers : From reprocessed raw data NED Comment : 'Quality' Good. Arecibo data.


No. 4 Name in publication : UGC 04331 Coordinates : 0816.4 +2040 B1950 Features targeted : 21-cm HI line Velocity or redshift : 4990 km/s z= 0.016645 Uncertainty : +/-7 +/- 0.000023 Unc. Significance : rms uncertainty Reference Code : 1991RC3.9.C...0000d Measurement Mode : Spectral range : Radio Reference Frame : Heliocentric velocity or redshift Qualifiers : Homogenized from new and previously published data NED Comment :


No. 5 Name in publication : SDSS J081912.76+203038.7 Coordinates : 124.803177 20.510740 J2000 Features targeted : Optical features Velocity or redshift : 0.016639 z= 0.016639 Uncertainty : +/-0.000185 +/- 0.000185 Unc. Significance : uncertainty Reference Code : 2006SDSS5.C...0000: Measurement Mode : Spectral range : Optical Spectrograph : Fiber-optic feed Features : Absorption lines Technique : Cross-correlation fit to template spectrum Spatial mode : Redshift is for nucleus only Reference Frame : Heliocentric velocity or redshift Qualifiers : From new, raw data NED Comment :


No. 6 Name in publication : NGC 2558 Coordinates : 081912.7 +203038. J2000 Features targeted : Optical Velocity or redshift : 4969 km/s z= 0.016575 Uncertainty : +/-80 +/- 0.000267 Unc. Significance : rms uncertainty Reference Code : 1998ApJ...496...39Z Measurement Mode : Spectral range : Optical Spectrograph : Fiber-optic feed Features : Absorption lines Technique : Cross-correlation fit to template spectrum Spatial mode : Redshift is for nucleus only Reference Frame : Heliocentric velocity or redshift Qualifiers : From new, raw data; OBJ_NAME modified from published data NED Comment :


No. 7 Name in publication : SDSS J081912.76+203038.7 Coordinates : 124.803177 20.510740 J2000 Features targeted : Optical features Velocity or redshift : 0.259432 z= 0.259432 Uncertainty : +/-0.000825 +/- 0.000825 Unc. Significance : uncertainty Reference Code : 2006SDSS5.C...0000: Measurement Mode : Spectral range : Optical Spectrograph : Fiber-optic feed Features : Emission lines Technique : Individual line fitting Spatial mode : Redshift is for nucleus only Reference Frame : Heliocentric velocity or redshift Qualifiers : From new, raw data NED Comment :


No. 8 Name in publication : Coordinates : Features targeted : Velocity or redshift : 0.0166327 z= 0.016633 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 2015MNRAS.448.3442G Measurement Mode : Reference Frame : Heliocentric velocity or redshift Qualifiers : Uncertain origin NED Comment :


No. 9 Name in publication : NGC 2558 Coordinates : Features targeted : Velocity or redshift : 0.016645 z= 0.016645 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 2012ApJ...747...31R Measurement Mode : Reference Frame : Heliocentric velocity or redshift Qualifiers : Uncertain origin NED Comment :


No. 10 Name in publication : Coordinates : Features targeted : Velocity or redshift : 0.01667 z= 0.016670 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 2015A&A...578A..61D Measurement Mode : Reference Frame : Heliocentric velocity or redshift Qualifiers : Uncertain origin NED Comment :


No. 11 Name in publication : UGC 04331 Coordinates : 081617.4 +203958 B1950 Features targeted : 21-cm Velocity or redshift : 4998 km/s z= 0.016672 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 1997AJ....113.1197H Measurement Mode : Spectral range : Radio Spectrograph : Heterodyne receiver(e.g., 21-cm) Features : 1 Emission lines Technique : Mid-point of line profile at 50% lvel Spatial mode : Redshift is systemic Reference Frame : Heliocentric velocity or redshift Qualifiers : From new, raw data; Corrected for contaminating sources NED Comment :


No. 12 Name in publication : NGC 2558 Coordinates : 081912.7716 +203038.574 J2000 Features targeted : Velocity or redshift : 4998 km/s z= 0.016672 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 :


No. 13 Name in publication : Coordinates : Features targeted : Velocity or redshift : 4999 km/s z= 0.016675 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 2015MNRAS.447.1531C Measurement Mode : Reference Frame : Heliocentric velocity or redshift Qualifiers : Uncertain origin NED Comment :


No. 14 Name in publication : Coordinates : Features targeted : Velocity or redshift : 4999 km/s z= 0.016675 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 2016AJ....152...50T Measurement Mode : Reference Frame : Heliocentric velocity or redshift Qualifiers : Uncertain origin NED Comment :


No. 15 Name in publication : UGC 04331 Coordinates : 081912.8 +203038.5 J2000 Features targeted : Velocity or redshift : 4999 km/s z= 0.016675 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 2013AJ....146...86T Measurement Mode : Reference Frame : Heliocentric velocity or redshift Qualifiers : Uncertain origin NED Comment :



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