J1801+4404

other name right ascension (J2000) declination (J2000) 5-GHz total flux density optical ID redshift

1800+440 18 h 1 m 32.3149 s + 44 ° 4 ´ 21.900 " 1.1 Jy quasar 0.663

VLBApls image at 5 GHz
color gif | contour gif | contour PostScript

Correlated flux density (Jy) vs. projected baseline length plot
gif | PostScript

Gaussian source model component parameters

flux density (Jy) EW position (mas) NS position (mas) major axis (mas) minor axis (mas) position angle (°)

0.571 0.0 0.0 < 0.9 < 0.4 ...
0.051 -1.2 -2.9 2.8 ± 0.5 < 0.8 47

Other VLBI references

5 GHz: VLBI image is published in the Caltech-Jodrell Bank Flat Spectrum Survey (CJF, Taylor et al. 1996, ApJS 107, 37)
1.6 GHz: VLBI image is published in the Caltech-Jodrell Bank Flat Spectrum Survey (CJF, Taylor et al. 1996, ApJS 107, 37)
2.3 and/or 8.4 GHz: VLBI images are available in the USNO Radio Reference Frame Image Database (RRFID, Fey & Charlot 2000, ApJS 128, 17)
15 GHz: multiple epoch VLBI images are available in the VLBA 2-cm survey (Kellermann et al. 1998, AJ 115, 1295)

VLBApls reference: Fomalont et al. (2000), ApJS 131, 95-183
VLBApls home page
Last modified: 19 Jan 2001

other name	right ascension (J2000)	declination (J2000)	5-GHz total flux density	optical ID	redshift
1800+440	18 h 1 m 32.3149 s	+ 44 ° 4 ´ 21.900 "	1.1 Jy	quasar	0.663

flux density (Jy)	EW position (mas)	NS position (mas)	major axis (mas)	minor axis (mas)	position angle (°)
0.571	0.0	0.0	< 0.9	< 0.4	...
0.051	-1.2	-2.9	2.8 ± 0.5	< 0.8	47