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Doubles in session


Current system
20180+1544
CHE 284


Nearby doubles
2' : 20180+1543
CHE 285

6' : 20177+1539
CHE 278

8' : 20183+1539
CHE 293

9' : 20181+1552
CHE 289

10' : 20179+1553
CHE 283

11' : 20186+1548
CHE 295

11' : 20181+1555
J 553

13' : 20187+1551
CHE 297AB

13' : 20183+1556
CHE 292

14' : 20189+1546
CHE 301

15' : 20172+1553
CHE 273AB

15' : 20178+1530
CHE 280

15' : 20190+1540
BPM2103

15' : 20170+1538
CHE 269

16' : 20171+1536
CHE 272

17' : 20168+1543
CHE 266

19' : 20180+1526
CHE 286

19' : 20188+1530
TOB 319AB

19' : 20186+1600
BPM2102

21' : 20182+1604
CHE 291

21' : 20190+1530
BKO 563

22' : 20181+1605
BKO 561

22' : 20171+1601
CHE 271

23' : 20194+1534
TOB 310

24' : 20174+1522
CHE 276

24' : 20190+1526
BPM2104



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Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20180+1544 CHE 284

 
 
20h 17m 58.85s +15° 43' 43.3" P.A. 339.00 sep 30.4 mag 9.45,10.13 Sp G0
 
 
Coord 2000 20180+1544 Discov num CHE 284 Comp Coord arcsec 2000 20 17 58.85 +15 43 43.3
Date first 1910 Date last 2015 Obs 14
Pa first 339 Pa last 339.2 P.A. Now (θ) 339.2°
Sep first 30.1 Sep last 30.44 Sep. Now (ρ) 30.44"
Mag pri 9.45 Mag sec 10.13 delta mag (ΔM) 0.68 Spectral class G0 (yellow)
Pri motion ra -005 Sec motion ra -006
Pri motion dec -006 Sec motion dec +000
Notes
rPM=0.779
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus Gaia DR2 1808394678614524544