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Current system
20161+1537
CHE 255


Nearby doubles
3' : 20162+1535
CHE 256

4' : 20163+1538
CHE 261AB

4' : 20162+1534
CHE 257

4' : 20159+1535
CHE 252

4' : 20158+1536
BKO 551

6' : 20157+1537
CHE 247

6' : 20157+1534
BKO 547

11' : 20154+1538
CHE 243AB

11' : 20153+1535
CHE 242

13' : 20156+1527
BKO 546

13' : 20168+1543
CHE 266

14' : 20156+1526
HDS2887AB

14' : 20170+1538
CHE 269

15' : 20171+1536
CHE 272

16' : 20161+1552
BKO 557

16' : 20160+1521
CHE 253

16' : 20161+1553
CHE 254AB

18' : 20157+1520
CHE 248

19' : 20168+1523
CHE 267

20' : 20151+1552
BKO 543

22' : 20172+1553
CHE 273AB

24' : 20151+1555
CHE 241

24' : 20145+1541
CHE 231

25' : 20177+1539
CHE 278

25' : 20165+1601
BKO 559

25' : 20144+1533
CHE 229



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

20161+1537 CHE 255

 
 
20h 16m 04.87s +15° 37' 12.4" P.A. 216.00 sep 24.6 mag 13.50,13.50
 
 
Coord 2000 20161+1537 Discov num CHE 255 Comp Coord arcsec 2000 20 16 04.87 +15 37 12.4
Date first 1910 Date last 2019 Obs 6
Pa first 219 Pa last 216.4 P.A. Now (θ) 216.4°
Sep first 24.8 Sep last 24.6 Sep. Now (ρ) 24.6"
Mag pri 13.50 Mag sec 13.50 delta mag (ΔM) 0 Spectral class
Pri motion ra -001 Sec motion ra +005
Pri motion dec -013 Sec motion dec -011
Notes
rPM=0.485
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus Gaia DR2 1808412854916612864
 
 
WDS 20161+1537 CHE 255 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Che1908 Pa - Chevalier, Stanislas .
Che1908 Shanghai Obs. Zo-Se 4, 60, 1908 (corrections described in Bko2011c and Hrt2012b)
Che1909 Pa - Chevalier, Stanislas .
Che1909 Shanghai Obs. Zo-Se 5, 86, 1909 (corrections are described in Hrt2012b)
Che1910 Ma j Chevalier, Stanislas & Tsang Ziang-seng .
Che1910 +Pa Shanghai Obs. Zo-Se 6, O5, 1910 (corrections are described in Hrt2012b)
Che1911 Ma - Chevalier, Stanislas .
Che1911 +Pa Shanghai Obs. Zo-Se 7, B1, 1911 (corrections are described in Hrt2012b)
Che1925 Pa - Chevalier, Stanislas 1925JO......8...65G
Che1925 J. Obs. 8, 65, 1925
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20161+1537 CHE 255 1910 1 219 24.8 10.45 10.51 201604.88+153712.3
20161+1537 CHE 255 2008 2 212 25.5 10.45 10.51 201604.88+153712.3
20161+1537 CHE 255 2019 6 216 24.6 13.50 13.50 201604.87+153712.4

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 20161+1537 CHE 255 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20161+1537 CHE 255 : MEASURES
 
 
No records found.

 
 
WDS 20161+1537 : VIRTUAL EYEPIECE
 
 

20161+1537 CHE 255A mag 13.5 20161+1537 CHE 255B sep 24.3 P.A. 215.40 mag 13.5 virtual eyepiece
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Radius:
Components only
 
 
WDS 20161+1537 : ALADIN DSS IMAGE @ 20h 16m 04.87s +15° 37' 12.4"
 
 
 
 
WDS 20161+1537 CHE 255 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20161+1537 CHE 255 distance=1' 20162+1535 CHE 256 distance=3' 20163+1538 CHE 261AB distance=4' 20163+1538 CHE 261AC distance=4' 20162+1534 CHE 257 distance=4' 20159+1535 CHE 252 distance=4' 20158+1536 BKO 551 distance=4' 20157+1537 CHE 247 distance=6' 20157+1534 BKO 547 distance=6' 20154+1538 CHE 243AB distance=11' 20154+1538 CHE 243AC distance=11' 20153+1535 CHE 242 distance=11' 20156+1527 BKO 546 distance=13' 20168+1543 CHE 266 distance=13' 20156+1526 HDS2887AB distance=14' 20156+1526 CHE 246AC distance=14' 20156+1526 CVP 1AD distance=14' 20170+1538 CHE 269 distance=14' 20171+1536 CHE 272 distance=15' 20161+1552 BKO 557 distance=16' 20160+1521 CHE 253 distance=16' 20161+1553 CHE 254AB distance=16' 20161+1553 BKO 556AC distance=16' 20157+1520 CHE 248 distance=18' 20168+1523 CHE 267 distance=19' 20151+1552 BKO 543 distance=20' 20172+1553 CHE 273AB distance=22' 20172+1553 BKO 560BC distance=23' 20151+1555 CHE 241 distance=24' 20145+1541 CHE 231 distance=24' 20177+1539 CHE 278 distance=25' 20165+1601 BKO 559 distance=25' 20144+1533 CHE 229 distance=25' 20174+1522 CHE 276 distance=26' 20165+1602 BKO 558 distance=26' 20167+1513 CHE 265 distance=26' 20178+1530 CHE 280 distance=26' 20166+1603 CHE 264 distance=28' 20160+1510 BKO 555 distance=28' 20171+1601 CHE 271 distance=28' 20158+1510 BKO 552 distance=28' 20172+1515 CHE 274AB distance=28' 20172+1515 DAM 360AC distance=28' 20180+1543 CHE 285 distance=29' 20180+1544 CHE 284 distance=29' 20157+1509 BKO 548 distance=29' 20157+1508 CHE 249AB distance=30' 20157+1508 BKO 549AC distance=30' 20145+1555 CHE 230AB distance=30' 20162+1507 CHE 258 distance=30' 20145+1555 BKO 542BC distance=30' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 20161+1537 CHE 255 216 24.6 1
Show 20162+1535 CHE 256 48 27.3 3
Show 20163+1538 CHE 261 AB 41 18.3 4
Show 20163+1538 CHE 261 AC 111 23.8 4
Show 20162+1534 CHE 257 38 29.0 4
Show 20159+1535 CHE 252 304 37.5 4
Show 20158+1536 BKO 551 62 4.9 4
Show 20157+1537 CHE 247 4.6 6
Show 20157+1534 BKO 547 91 4.4 6
Show 20154+1538 CHE 243 AB 222 24.0 11
Show 20154+1538 CHE 243 AC 205 26.6 11
Show 20153+1535 CHE 242 358 13.8 11
Show 20156+1527 BKO 546 106 7.1 13
Show 20168+1543 CHE 266 51 36.5 13
Show 20156+1526 HDS2887 AB 244 4.7 14
Show 20156+1526 CHE 246 AC 87 15.9 14
Show 20156+1526 CVP 1 AD 340 39.7 14
Show 20170+1538 CHE 269 285 26.9 14
Show 20171+1536 CHE 272 104 17.4 15
Show 20161+1552 BKO 557 347 5.6 16
Show 20160+1521 CHE 253 324 14.4 16
Show 20161+1553 CHE 254 AB 133 26.6 16
Show 20161+1553 BKO 556 AC 313 10.2 16
Show 20157+1520 CHE 248 322 32.0 18
Show 20168+1523 CHE 267 18 36.5 19
Show 20151+1552 BKO 543 325 6.4 20
Show 20172+1553 CHE 273 AB 94 26.8 22
Show 20172+1553 BKO 560 BC 199 1.4 23
Show 20151+1555 CHE 241 49 21.3 24
Show 20145+1541 CHE 231 266 14.6 24
Show 20177+1539 CHE 278 89 10.5 25
Show 20165+1601 BKO 559 36 4.8 25
Show 20144+1533 CHE 229 262 17.5 25
Show 20174+1522 CHE 276 261 18.0 26
Show 20165+1602 BKO 558 137 6.2 26
Show 20167+1513 CHE 265 68 20.8 26
Show 20178+1530 CHE 280 230 27.7 26
Show 20166+1603 CHE 264 35 28.3 28
Show 20160+1510 BKO 555 202 4.6 28
Show 20171+1601 CHE 271 34 26.3 28
Show 20158+1510 BKO 552 64 3.6 28
Show 20172+1515 CHE 274 AB 148 27.5 28
Show 20172+1515 DAM 360 AC 21 5.9 28
Show 20180+1543 CHE 285 17 7.1 29
Show 20180+1544 CHE 284 339 30.4 29
Show 20157+1509 BKO 548 65 2.7 29
Show 20157+1508 CHE 249 AB 349 22.6 30
Show 20157+1508 BKO 549 AC 111 4.8 30
Show 20145+1555 CHE 230 AB 253 20.5 30
Show 20162+1507 CHE 258 230 16.0 30
Show 20145+1555 BKO 542 BC 179 7.9 30

 
 
WDS 20161+1537 : COMPONENTS
 
 
  A
B pa=215.4°
sep=24.28"
 
 
20161+1537 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 201604.87+153712.4 Mag 13.5 PmRA -1.00
PmDE -13.0
 
 
20161+1537 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 201603.90+153652.6 Mag 13.5 PmRA 5.00
PmDE -11.0 Calc coord yes