stampa
Login

Create your own observing lists in a few clicks and save them.
Register here


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
20178+1520
CHE 281


Nearby doubles
2' : 20179+1520
SMA 116

5' : 20174+1522
CHE 276

6' : 20181+1519
CHE 290

7' : 20180+1526
CHE 286

10' : 20172+1515
CHE 274AB

10' : 20178+1530
CHE 280

11' : 20185+1519
BPM2100

11' : 20182+1511
A 1670

12' : 20179+1508
A 1669

13' : 20183+1509
CHE 294AB

14' : 20168+1523
CHE 267

15' : 20183+1508
BPM2098

16' : 20177+1504
BPM2091

16' : 20167+1513
CHE 265

17' : 20182+1504
BPM2097

18' : 20189+1524
CHE 302

18' : 20177+1503
CHE 279

19' : 20188+1530
TOB 319AB

19' : 20169+1506
CHE 268AB

19' : 20171+1536
CHE 272

20' : 20190+1526
BPM2104

20' : 20180+1501
CHE 287

20' : 20177+1539
CHE 278

21' : 20183+1539
CHE 293

21' : 20190+1530
BKO 563

22' : 20170+1538
CHE 269



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20178+1520 CHE 281

 
 
20h 17m 46.51s +15° 19' 35.0" P.A. 316.00 sep 17.7 mag 11.20,12.60 Sp A5+A8
 
 
Coord 2000 20178+1520 Discov num CHE 281 Comp Coord arcsec 2000 20 17 46.51 +15 19 35.0
Date first 1910 Date last 2016 Obs 16
Pa first 308 Pa last 316.2 P.A. Now (θ) 316.2°
Sep first 17.3 Sep last 17.671 Sep. Now (ρ) 17.671"
Mag pri 11.20 Mag sec 12.60 delta mag (ΔM) 1.4 Spectral class A5+A8 (white/white)
Pri motion ra +003 Sec motion ra +009
Pri motion dec -001 Sec motion dec +014
Notes
rPM=0.971
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus Tycho2 1631-00541-1 Gaia DR2 1808343860560343936 HD 355392