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
 
 
WDS 20180+1544 CHE 284 : 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
20180+1544 CHE 284 1998 3 339 30.3 9.45 10.13 D 201758.85+154343.3
20180+1544 CHE 284 2008 4 339 30.1 9.45 10.13 D 201758.85+154343.3
20180+1544 CHE 284 2013 8 340 30.0 9.45 10.13 201758.85+154343.3
20180+1544 CHE 284 2015 10 339 30.3 9.45 10.13 G0 201758.85+154343.3

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WDS 20180+1544 CHE 284 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20180+1544 CHE 284 : MEASURES
 
 
No records found.

 
 
WDS 20180+1544 : VIRTUAL EYEPIECE
 
 

20180+1544 CHE 284A mag 9.45 Sp G0 20180+1544 CHE 284B sep 30.3 P.A. 339.90 mag 10.13 virtual eyepiece
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Radius:
Components only
 
 
WDS 20180+1544 : ALADIN DSS IMAGE @ 20h 17m 58.85s +15° 43' 43.3"
 
 
 
 
WDS 20180+1544 CHE 284 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


20180+1544  CHE 284 distance=0' 20180+1543  CHE 285 distance=2' 20177+1539  CHE 278 distance=6' 20183+1539  CHE 293 distance=8' 20181+1552  CHE 289 distance=9' 20179+1553  CHE 283 distance=10' 20186+1548  CHE 295 distance=11' 20181+1555  J   553 distance=11' 20187+1551  CHE 297AB distance=13' 20187+1551  CHE 298AC distance=13' 20183+1556  CHE 292 distance=13' 20187+1551  CHE 298BC distance=14' 20189+1546  CHE 301 distance=14' 20172+1553  BKO 560BC distance=15' 20172+1553  CHE 273AB distance=15' 20178+1530  CHE 280 distance=15' 20190+1540  BPM2103 distance=15' 20170+1538  CHE 269 distance=15' 20171+1536  CHE 272 distance=16' 20168+1543  CHE 266 distance=17' 20180+1526  CHE 286 distance=19' 20188+1530  TOB 319AB distance=19' 20188+1530  CHE 299AC distance=19' 20186+1600  BPM2102 distance=19' 20182+1604  CHE 291 distance=21' 20190+1530  BKO 563 distance=21' 20181+1605  BKO 561 distance=22' 20171+1601  CHE 271 distance=22' 20194+1534  TOB 310 distance=23' 20174+1522  CHE 276 distance=24' 20190+1526  BPM2104 distance=24' 20171+1604  CHE 270 distance=24' 20179+1520  SMA 116 distance=25' 20189+1524  CHE 302 distance=25' 20178+1520  CHE 281 distance=25' 20195+1533  HDS2905 distance=25' 20163+1538  CHE 261AB distance=26' 20163+1538  CHE 261AC distance=26' 20181+1519  CHE 290 distance=26' 20185+1519  BPM2100 distance=26' 20165+1601  BKO 559 distance=27' 20162+1534  CHE 257 distance=27' 20168+1523  CHE 267 distance=28' 20162+1535  CHE 256 distance=28' 20198+1550  STE   2 distance=28' 20161+1553  CHE 254AB distance=29' 20161+1553  BKO 556AC distance=29' 20161+1537  CHE 255 distance=29' 20166+1603  CHE 264 distance=29' 20161+1552  BKO 557 distance=29' 20165+1602  BKO 558 distance=29' grafico limitrofi
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Show name coord_2000 discov# comp pa sep dist(')
Show 20180+1544 CHE 284 339 30.4
Show 20180+1543 CHE 285 17 7.1 2
Show 20177+1539 CHE 278 89 10.5 6
Show 20183+1539 CHE 293 354 24.8 8
Show 20181+1552 CHE 289 39 32.5 9
Show 20179+1553 CHE 283 80 24.5 10
Show 20186+1548 CHE 295 260 13.6 11
Show 20181+1555 J 553 20 3.7 11
Show 20187+1551 CHE 297 AB 6 35.1 13
Show 20187+1551 CHE 298 AC 318 16.9 13
Show 20183+1556 CHE 292 181 15.7 13
Show 20187+1551 CHE 298 BC 213 27.0 14
Show 20189+1546 CHE 301 296 28.1 14
Show 20172+1553 BKO 560 BC 199 1.4 15
Show 20172+1553 CHE 273 AB 94 26.8 15
Show 20178+1530 CHE 280 230 27.7 15
Show 20190+1540 BPM2103 173 15.0 15
Show 20170+1538 CHE 269 285 26.9 15
Show 20171+1536 CHE 272 104 17.4 16
Show 20168+1543 CHE 266 51 36.5 17
Show 20180+1526 CHE 286 92 25.9 19
Show 20188+1530 TOB 319 AB 65 14.9 19
Show 20188+1530 CHE 299 AC 329 37.6 19
Show 20186+1600 BPM2102 47 72.1 19
Show 20182+1604 CHE 291 275 8.3 21
Show 20190+1530 BKO 563 147 9.2 21
Show 20181+1605 BKO 561 91 5.8 22
Show 20171+1601 CHE 271 34 26.3 22
Show 20194+1534 TOB 310 239 16.3 23
Show 20174+1522 CHE 276 261 18.0 24
Show 20190+1526 BPM2104 293 93.0 24
Show 20171+1604 CHE 270 103 16.1 24
Show 20179+1520 SMA 116 159 9.7 25
Show 20189+1524 CHE 302 129 23.7 25
Show 20178+1520 CHE 281 316 17.7 25
Show 20195+1533 HDS2905 116 0.3 25
Show 20163+1538 CHE 261 AB 41 18.3 26
Show 20163+1538 CHE 261 AC 111 23.8 26
Show 20181+1519 CHE 290 153 10.2 26
Show 20185+1519 BPM2100 115 114.5 26
Show 20165+1601 BKO 559 36 4.8 27
Show 20162+1534 CHE 257 38 29.0 27
Show 20168+1523 CHE 267 18 36.5 28
Show 20162+1535 CHE 256 48 27.3 28
Show 20198+1550 STE 2 164 8.1 28
Show 20161+1553 CHE 254 AB 133 26.6 29
Show 20161+1553 BKO 556 AC 313 10.2 29
Show 20161+1537 CHE 255 216 24.6 29
Show 20166+1603 CHE 264 35 28.3 29
Show 20161+1552 BKO 557 347 5.6 29
Show 20165+1602 BKO 558 137 6.2 29

 
 
WDS 20180+1544 : COMPONENTS
 
 
  A
B pa=339.9°
sep=30.30"
 
 
20180+1544 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 201758.85+154343.3 Mag 9.45 Spectral class G0 (yellow)
PmRA -5.00 PmDE -6.0
 
 
20180+1544 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 201758.13+154411.8 Mag 10.13 PmRA -6.00
PmDE 0.0 Calc delta mag 0.68 Calc coord yes