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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



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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
 
 
WDS 20178+1520 CHE 281 : 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
20178+1520 CHE 281 2006 4 315 17.6 8.89 10.18 D 201746.51+151935.0
20178+1520 CHE 281 2008 5 315 17.5 8.89 10.18 D 201746.51+151935.0
20178+1520 CHE 281 2013 8 317 17.4 8.89 10.18 201746.51+151935.0
20178+1520 CHE 281 2016 11 316 17.7 11.20 12.60 A5+A8 201746.51+151935.0

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

 
 
WDS 20178+1520 CHE 281 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20178+1520 CHE 281 : MEASURES
 
 
No records found.

 
 
WDS 20178+1520 : VIRTUAL EYEPIECE
 
 

20178+1520 CHE 281A mag 11.2 Sp A5 20178+1520 CHE 281B sep 17.4 P.A. 317.20 mag 12.6 Sp A8 virtual eyepiece
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Radius:
Components only
 
 
WDS 20178+1520 : ALADIN DSS IMAGE @ 20h 17m 46.51s +15° 19' 35.0"
 
 
 
 
WDS 20178+1520 CHE 281 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20178+1520 CHE 281 distance=1' 20179+1520 SMA 116 distance=2' 20174+1522 CHE 276 distance=5' 20181+1519 CHE 290 distance=6' 20180+1526 CHE 286 distance=7' 20172+1515 CHE 274AB distance=10' 20172+1515 DAM 360AC distance=10' 20178+1530 CHE 280 distance=10' 20185+1519 BPM2100 distance=11' 20182+1511 A 1670 distance=11' 20179+1508 A 1669 distance=12' 20183+1509 CHE 294AB distance=13' 20183+1509 CHE 294AC distance=13' 20168+1523 CHE 267 distance=14' 20183+1508 BPM2098 distance=15' 20177+1504 BPM2091 distance=16' 20167+1513 CHE 265 distance=16' 20182+1504 BPM2097 distance=17' 20189+1524 CHE 302 distance=18' 20177+1503 CHE 279 distance=18' 20188+1530 TOB 319AB distance=19' 20188+1530 CHE 299AC distance=19' 20169+1506 CHE 268AB distance=19' 20169+1506 ABH 136AD distance=19' 20169+1506 ABH 136AE distance=19' 20169+1506 ABH 136AF distance=19' 20169+1506 ABH 136AG distance=19' 20169+1506 ABH 136AH distance=19' 20169+1506 ABH 136AI distance=19' 20169+1506 ABH 136AJ distance=19' 20169+1506 ABH 136AK distance=19' 20169+1506 ABH 136AL distance=19' 20169+1506 CHE 268AC distance=19' 20171+1536 CHE 272 distance=19' 20169+1506 CHE 268BC distance=19' 20190+1526 BPM2104 distance=20' 20180+1501 CHE 287 distance=20' 20177+1539 CHE 278 distance=20' 20183+1539 CHE 293 distance=21' 20190+1530 BKO 563 distance=21' 20170+1538 CHE 269 distance=22' 20192+1517 BPM2107 distance=22' 20180+1543 CHE 285 distance=23' 20180+1544 CHE 284 distance=25' 20162+1507 CHE 258 distance=25' 20160+1521 CHE 253 distance=26' 20167+1459 BPM2086 distance=27' 20190+1540 BPM2103 distance=27' 20164+1500 CHE 262 distance=27' 20194+1507 BPM2110 distance=27' 20162+1534 CHE 257 distance=27' 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 20178+1520 CHE 281 316 17.7 1
Show 20179+1520 SMA 116 159 9.7 2
Show 20174+1522 CHE 276 261 18.0 5
Show 20181+1519 CHE 290 153 10.2 6
Show 20180+1526 CHE 286 92 25.9 7
Show 20172+1515 CHE 274 AB 148 27.5 10
Show 20172+1515 DAM 360 AC 21 5.9 10
Show 20178+1530 CHE 280 230 27.7 10
Show 20185+1519 BPM2100 115 114.5 11
Show 20182+1511 A 1670 216 0.4 11
Show 20179+1508 A 1669 247 3.1 12
Show 20183+1509 CHE 294 AB 358 16.0 13
Show 20183+1509 CHE 294 AC 238 13.9 13
Show 20168+1523 CHE 267 18 36.5 14
Show 20183+1508 BPM2098 80 119.1 15
Show 20177+1504 BPM2091 71 77.9 16
Show 20167+1513 CHE 265 68 20.8 16
Show 20182+1504 BPM2097 355 46.9 17
Show 20189+1524 CHE 302 129 23.7 18
Show 20177+1503 CHE 279 181 6.8 18
Show 20188+1530 TOB 319 AB 65 14.9 19
Show 20188+1530 CHE 299 AC 329 37.6 19
Show 20169+1506 CHE 268 AB 213 10.2 19
Show 20169+1506 ABH 136 AD 281 39.7 19
Show 20169+1506 ABH 136 AE 231 74.0 19
Show 20169+1506 ABH 136 AF 217 52.4 19
Show 20169+1506 ABH 136 AG 212 51.0 19
Show 20169+1506 ABH 136 AH 190 55.4 19
Show 20169+1506 ABH 136 AI 181 67.9 19
Show 20169+1506 ABH 136 AJ 57 93.0 19
Show 20169+1506 ABH 136 AK 65 103.2 19
Show 20169+1506 ABH 136 AL 64 125.3 19
Show 20169+1506 CHE 268 AC 337 21.4 19
Show 20171+1536 CHE 272 104 17.4 19
Show 20169+1506 CHE 268 BC 354 28.4 19
Show 20190+1526 BPM2104 293 93.0 20
Show 20180+1501 CHE 287 134 27.4 20
Show 20177+1539 CHE 278 89 10.5 20
Show 20183+1539 CHE 293 354 24.8 21
Show 20190+1530 BKO 563 147 9.2 21
Show 20170+1538 CHE 269 285 26.9 22
Show 20192+1517 BPM2107 264 67.4 22
Show 20180+1543 CHE 285 17 7.1 23
Show 20180+1544 CHE 284 339 30.4 25
Show 20162+1507 CHE 258 230 16.0 25
Show 20160+1521 CHE 253 324 14.4 26
Show 20167+1459 BPM2086 286 62.5 27
Show 20190+1540 BPM2103 173 15.0 27
Show 20164+1500 CHE 262 245 19.7 27
Show 20194+1507 BPM2110 256 78.9 27
Show 20162+1534 CHE 257 38 29.0 27

 
 
WDS 20178+1520 : COMPONENTS
 
 
  A
B pa=317.2°
sep=17.37"
 
 
20178+1520 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 201746.51+151935.0 Mag 11.2 Spectral class A5 (white)
PmRA 3.00 PmDE -1.0 Tycho2 1631-00541-1 HD 355392
Tycho2
Tycho2 1631-00541-1 Pflag RAmdeg 304.44378775 DEmdeg 15.32640268
PmRA 4.1 PmDE -6.0 E RAmdeg 60 E DEmdeg 56
E pmRA 1.7 E pmDE 1.6 EpRAm 1973.72 EpDEm 1974.56
Num 4 Q RAmdeg 0.6 Q DEmdeg 2.2 Q pmRA 0.6
Q pmDE 2.2 BTmag 11.799 E BTmag 0.099 VTmag 11.199
E VTmag 0.099 Prox 999 TYC HIP
CCDM RAdeg 304.44377833 DEdeg 15.32641667 EpRA 1990 1.68
EpDE 1990 1.60 E RAdeg 67.4 E DEdeg 61.9 Posflg
Corr -0.1
 
 
20178+1520 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 201745.69+151947.8 Mag 12.6 Spectral class A8 (white)
PmRA 9.00 PmDE 14.0 Calc delta mag 1.4 Calc coord yes