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Current system
20171+1536
CHE 272


Nearby doubles
4' : 20170+1538
CHE 269

9' : 20168+1543
CHE 266

11' : 20177+1539
CHE 278

12' : 20163+1538
CHE 261AB

12' : 20178+1530
CHE 280

13' : 20162+1534
CHE 257

13' : 20162+1535
CHE 256

14' : 20168+1523
CHE 267

15' : 20161+1537
CHE 255

15' : 20174+1522
CHE 276

16' : 20180+1543
CHE 285

16' : 20180+1544
CHE 284

17' : 20180+1526
CHE 286

18' : 20172+1553
CHE 273AB

18' : 20159+1535
CHE 252

18' : 20158+1536
BKO 551

19' : 20178+1520
CHE 281

19' : 20183+1539
CHE 293

20' : 20157+1534
BKO 547

20' : 20179+1520
SMA 116

21' : 20157+1537
CHE 247

21' : 20160+1521
CHE 253

21' : 20172+1515
CHE 274AB

22' : 20179+1553
CHE 283

23' : 20167+1513
CHE 265

23' : 20161+1553
CHE 254AB



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20171+1536 CHE 272

 
 
20h 17m 04.03s +15° 35' 04.4" P.A. 104.00 sep 17.4 mag 12.70,13.30
 
 
Coord 2000 20171+1536 Discov num CHE 272 Comp Coord arcsec 2000 20 17 04.03 +15 35 04.4
Date first 1910 Date last 2019 Obs 13
Pa first 108 Pa last 104.2 P.A. Now (θ) 104.2°
Sep first 17.1 Sep last 17.4 Sep. Now (ρ) 17.4"
Mag pri 12.70 Mag sec 13.30 delta mag (ΔM) 0.6 Spectral class
Pri motion ra +003 Sec motion ra +007
Pri motion dec +000 Sec motion dec +001
Notes
rPM=0.583
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus Gaia DR2 1808415221439300096