| Common Name: | 4C +62.12 | MOJAVE 15 GHz [Total intensity movie] | [Polariz. movie] | VLBA 1.4 GHz: NRAO Archive |
| B1950 Name: | 0821+621 |  |
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| J2000 Name: | J0825+6157 | ||
| R.A. and Dec. (J2000): | 8h25m38.612s +61d57'28.579" |
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| AGN Class: | Quasar | ||
| Redshift: | 0.542 (1984MNRAS.211..105W) | Luminosity Distance: | 3113 Mpc ; 6.35 pc/mas |
| Radio Spectrum: | Steep | ||
| Gamma-ray Association | LAT: N, EGRET: N, TeV: N | ||
| Kpc-scale morphology: | Two-sided | ||
| Jet Speed: | Maximum: 267 ± 61 μas/y ; 8.5 ± 1.9 c Median: N/A ; based on 4 moving features Lister et al. 2021, ApJ,923,30 |
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| Separation Versus Time Plot: | PNG PS | ||
| Stacked epoch 15 GHz VLBA
images: Uniform weight: [PDF] [GIF] Natural weight: [PDF] [GIF] Circular Beam : [PDF] [GIF] Tapered Beam: [PDF] [GIF] Rotation Measure Map: | Not available | Spectral Index Map: | Not available | |
VLBA 23 GHz: |
Kpc-scale: Healey et al. 2007, ApJS 171, 61 | |
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| Fermi LAT and 15 GHz VLBA Light Curves |
VLBA 43 GHz: |
Multiepoch Radio Spectrum: |
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| Comments: | Robopol control sample | ||
![[GIF]](../stackedimages/0821+621.u.stacked.icu.gif){kind=link}
![[GIF]](../stackedimages/0821+621.u.stacked.icd.gif){kind=link}
![[GIF]](../stackedimages/0821+621.u.stacked.icc.gif){kind=link}
![[GIF]](../stackedimages/0821+621.u.stacked.ict.gif){kind=link}
If you use these data in a publication, we ask that you please contact us so we can add a link to the list of external MOJAVE publications, and ask that you cite Lister et al., 2018, ApJS, 234, 12 and include the following acknowledgment: "This research has made use of data from the MOJAVE database that is maintained by the MOJAVE team (Lister et al. 2018)"
Important Note: The MOJAVE team, working with the OVRO 40m AGN monitoring group, discovered a systematic error in the flux densities of all VLBA 15 GHz observations taking place after a date that lies between 2019 April 16 and 2019 May 16. Observations after that date have correlated flux densities that are between 10% and 20% too low. We have adjusted the flux density scaling of the MOJAVE VLBA data up to 2022 Jan 3 based on near-simultaneous OVRO 40m measurements at 15 GHz.
Asterisked entries below denote epochs that have not yet been corrected for the VLBA flux density scaling problem.
Important Note: The MOJAVE team, working with the OVRO 40m AGN monitoring group, discovered a systematic error in the flux densities of all VLBA 15 GHz observations taking place after a date that lies between 2019 April 16 and 2019 May 16. Observations after that date have correlated flux densities that are between 10% and 20% too low. We have adjusted the flux density scaling of the MOJAVE VLBA data up to 2022 Jan 3 based on near-simultaneous OVRO 40m measurements at 15 GHz.
Asterisked entries below denote epochs that have not yet been corrected for the VLBA flux density scaling problem.
| Epoch (Y-M-D) | VLBA Code | VLBA I (mJy) |
VLBA P (mJy) |
VLBA P (%) |
VLBA EVPA (deg.) |
I Image (Nat. Weight) | Tapered I Image | Tapered I Image (Widefield) | Visibility Data |
Stokes I Radplot | Pol. Image |
2018-02-02 | BL229AM | 302 | 3.5 | 1.2 | 115 | FITS PNG PS | FITS PNG PS | PNG PS | uvf | PNG PS | PNG PS | 2017-11-18 | BL229AL | 320 | 3.6 | 1.1 | 119 | FITS PNG PS | FITS PNG PS | PNG PS | uvf | PNG PS | PNG PS | 2017-06-17 | BL229AI | 343 | 9.0 | 2.6 | 115 | FITS PNG PS | FITS PNG PS | PNG PS | uvf | PNG PS | PNG PS | 2017-01-28 | BL229AE | 294 | 5.5 | 1.9 | 139 | FITS PNG PS | FITS PNG PS | PNG PS | uvf | PNG PS | PNG PS | 2016-12-10 | BL229AC | 279 | 5.9 | 2.1 | 139 | FITS PNG PS | FITS PNG PS | PNG PS | uvf | PNG PS | PNG PS | 2016-11-06 | BL229AB | 298 | 6.1 | 2.0 | 137 | FITS PNG PS | FITS PNG PS | PNG PS | uvf | PNG PS | PNG PS | 2016-09-26 | BL229AA | 293 | 4.8 | 1.6 | 142 | FITS PNG PS | FITS PNG PS | PNG PS | uvf | PNG PS | PNG PS | 2005-01-08 | BH118B | 312 | no data | FITS PNG PS | FITS PNG PS | PNG PS | uvf | PNG PS | 2004-04-24 | BH118C | 344 | 2.2 | 0.6 | 146 | FITS PNG PS | FITS PNG PS | PNG PS | uvf | PNG PS |
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