Celestia shows the Deneb would have a magnitude the same as the sun at a distance of about 500 AU.
Just for the grin value I ran Heaven and Earth on the OTU Deneb system. I thought I would get something totally outrageous, but in fact it did not turn out so bad. Here's what I got:
System Name: Deneb
PBG: 610
PRIMARY SYSTEM A2 Ia
7 Deneb I Theta G410200-B
moon - 6 Deneb I Theta Ay YS00000-0
11 Deneb I Mu G50066B-C Mn Co Re Nv
12 Deneb I Nu B537ADD-C Hi In
13 Deneb I Xi H64066C-C Mn Co Nv
moon - 12 Deneb I Xi Ay Y300000-0
14 Deneb I Omicron X000000-0
As you can see, this puts the main planet out in orbit 12. Not having my book infront of me I am not sure how far out that is. From the system diagram it looks about 200 AU, which is probably still way to close. H&E puts the mean surface temperature of the planet as 28.021 degrees C. A bit warm, but really nice compared to the weird temperatures H&E usually defines as 'habitable'.
Just for the grin value I ran Heaven and Earth on the OTU Deneb system. I thought I would get something totally outrageous, but in fact it did not turn out so bad. Here's what I got:
System Name: Deneb
PBG: 610
PRIMARY SYSTEM A2 Ia
7 Deneb I Theta G410200-B
moon - 6 Deneb I Theta Ay YS00000-0
11 Deneb I Mu G50066B-C Mn Co Re Nv
12 Deneb I Nu B537ADD-C Hi In
13 Deneb I Xi H64066C-C Mn Co Nv
moon - 12 Deneb I Xi Ay Y300000-0
14 Deneb I Omicron X000000-0
As you can see, this puts the main planet out in orbit 12. Not having my book infront of me I am not sure how far out that is. From the system diagram it looks about 200 AU, which is probably still way to close. H&E puts the mean surface temperature of the planet as 28.021 degrees C. A bit warm, but really nice compared to the weird temperatures H&E usually defines as 'habitable'.