a Redshift from Ackermann et al. (2011ApJ...743..171A, Cat. J/ApJ/743/171).
b V-mag=R-mag from NED. Not present in Veron-Cetty & Veron (2006A&A...455..773V,
b  Cat. VII/248) catalog. Redshift from Sowards-Emmerd et al. 
b  (2005ApJ...626...95S, Cat J/ApJ/626/95).
c Classified as a possible galaxy in Veron-Cetty & Veron (2006A&A...455..773V, 
c  Cat. VII/248) catalog.
d V-mag=optical-mag from NED. Not present in Veron-Cetty & Veron 
d  (2006A&A...455..773V, Cat. VII/248) catalog. Redshift from Sowards-Emmerd et 
d  al. (2005ApJ...626...95S, Cat J/ApJ/626/95).
e V-mag=optical-mag from NED. Redshift from Cohen et al. (1987ApJ...318..577C). 
e  Classified as a possible galaxy in Veron-Cetty & Veron (2006A&A...455..773V, 
e  Cat. VII/248) catalog.
f From Agudo et al. (2007A&A...476L..17A, Cat. J/A+A/476/L17) and 
f  Acosta-Pulido et al. (2010A&A...519A...5A).
g Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) catalog
h V-mag=optical-mag from NED. Not present in Veron-Cetty & Veron 
h  (2006A&A...455..773V, Cat. VII/248) catalog. Redshift from Sowards-Emmerd et 
h  al. (2005ApJ...626...95S, Cat J/ApJ/626/95).
i Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) catalog
j Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) 
j  catalog. Redshift, R-mag=optical-mag and optical identification from Healey 
j  et al. (2008ApJS..175...97H, Cat. J/ApJS/175/97ApJS..175...97H, 
j  Cat. J/ApJS/175/97).
k Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) catalog
l Redshift from Nilsson et al. (2008A&A...487L..29N).
m Classified as a Galaxy on Veron-Cetty & Veron (2006A&A...455..773V, 
m  Cat. VII/248) catalog.
n z=0.245 from Britzen et al. (in prep.). Sbarufatti et al. 
n  (2005ApJ...635..173S) give z>0.75.
o Classified as a possible BL Lac in Veron-Cetty & Veron (2006A&A...455..773V, 
o  Cat. VII/248) catalog.
p Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) 
p  catalog. Redshift, classification and R-mag=optical-mag from de Vaucouleurs 
p  et al. (1991, Cat. VII/155).
q Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) 
q  catalog. Redshift, R-mag=optical-mag and optical identification from 
q  Healey et al. (2008ApJS..175...97H, Cat. J/ApJS/175/97).
r V-mag=optical-mag from NED, not present in Veron-Cetty & Veron 
r  (2006A&A...455..773V, Cat. VII/248) catalog.
s Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) catalog
t Classified as a galaxy on Veron-Cetty & Veron (2006A&A...455..773V, 
t  Cat. VII/248) catalog.
u Redshift from Ackermann et al. (2011ApJ...743..171A, Cat. J/ApJ/743/171).
v Classified as a quasar on Veron-Cetty & Veron (2006A&A...455..773V, 
v  Cat. VII/248) catalog.
w Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) 
w  catalog. Redshift, R-mag=optical-mag and optical identification from 
w  Healey et al. (2008ApJS..175...97H, Cat. J/ApJS/175/97).
x Classified as a quasar on Veron-Cetty & Veron (2006A&A...455..773V, 
x  Cat. VII/248) catalog.
y V-mag=R-mag from NED, not present in Veron-Cetty & Veron (2006A&A...455..773V,
y  Cat. VII/248) catalog. Redshift from Lawrence et al. (1986AJ.....91..494L).
z V-mag=R-mag from NED, not present in Veron-Cetty & Veron (2006A&A...455..773V,
z  Cat. VII/248) catalog.
A V-mag=R-mag from NED, possible BLLac in Veron-Cetty & Veron 
A  (2006A&A...455..773V, Cat. VII/248) catalog.
B Classified as a quasar on Veron-Cetty & Veron (2006A&A...455..773V, 
B  Cat. VII/248) catalog.
C Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) 
C  catalog. Redshift, R-mag=optical-mag and optical identification from 
C  Healey et al. (2008ApJS..175...97H, Cat. J/ApJS/175/97).
D Not present in Veron-Cetty & Veron (2006A&A...455..773V, Cat. VII/248) 
D  catalog. Redshift, R-mag=optical-mag and optical identification from 
D  Healey et al. (2008ApJS..175...97H, Cat. J/ApJS/175/97).