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Current system
18187-1347
DCH 31 GH


Nearby doubles
1' : 18186-1347
DCH 24AB

2' : 18187-1346
DCH 27

2' : 18188-1348
DCH 39

2' : 18186-1346
DCH 22AB

2' : 18187-1345
SNA 89AB

2' : 18188-1347
DCH 37AB

2' : 18186-1348
DCH 26AB

2' : 18186-1345
DCH 21

3' : 18189-1347
DCH 41AB

3' : 18187-1349
DCH 33AB

3' : 18188-1349
DCH 40

3' : 18185-1345
DCH 19

4' : 18189-1349
DCH 43

4' : 18189-1348
HDS2590AB

5' : 18190-1349
DBR 292

5' : 18184-1344
DBR 290

5' : 18185-1344
SHN 229

7' : 18186-1341
DCH 20

7' : 18191-1344
DCH 44

8' : 18182-1347
DCH 18

10' : 18187-1356
DCH 36

31' : 18179-1415
BRT2748

33' : 18211-1339
RST9006

39' : 18181-1310
HU 59

39' : 18168-1414
J 2204AB

43' : 18210-1321
BWE 2



Selections
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Binocular doubles
Binary Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18187-1347 DCH 31 GH

 
 
18h 18m 42.20s -13° 46' 51.6" P.A. 253.00 sep 1.2 mag 10.64,15.09 Sp B5
 
 
Coord 2000 18187-1347 Discov num DCH  31 Comp GH Coord arcsec 2000 18 18 42.20 -13 46 51.6
Date first 1998 Date last 1998 Obs 1
Pa first 253 Pa last 253.2 P.A. Now (θ) 253.2°
Sep first 1.2 Sep last 1.233 Sep. Now (ρ) 1.233"
Mag pri 10.64 Mag sec 15.09 delta mag (ΔM) 4.45 Spectral class B5 (blue-white)
Pri motion ra -003 Sec motion ra
Pri motion dec +001 Sec motion dec
Notes K (K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
 
 
18187-1347 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 18 18 40 -13 46 56 DCH 28 AB 1998 1 225 0.8 11.76 13.96 2.20
Show 18 18 41 -13 46 52 DCH 29 CD 2017 2 185 1.1 9.64 10.63 0.99
Show 18 18 42 -13 46 43 DCH 30 EF 1998 1 136 0.7 11.57 14.15 2.58
Show 18 18 42 -13 46 52 DCH 31 GH 1998 1 253 1.2 10.64 15.09 4.45 <===
Show 142216 18 18 42 -13 47 13 DCH 32 IJ 1998 1 7 0.9 13.36 15.41 2.05
Show 161312 18 18 43 -13 46 51 VSP 69 KL 2015 1 281 1.0 8.80 16.70 7.90
12-fold system
12 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Serpens Tycho2 5689-00637-1 Gaia DR2 4146600674426016640
 
 
WDS 18187-1347 DCH 31 GH : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
discov author
DCH Duchene, G., Bouvier, J. & Simon, T
DCH Duchene, G., McCabe, C., Pinte, C., Stapelfeldt, K.R., Menard, F., Duvert, G.,
DCH Ghez, A.M., Maness, H.L., Bouy, H., Barrado y Navascues, D., Morales-Calderon, M.,
DCH Wolf, S., et al.
DCH Duchene, G., Oon, J.T., De Rosa, R.J., Kantorski, P., Coy, B., Wang, J.J., Thomas,
VSP Mesa, D., Bonnefoy, M., Gratton, R., Van Der Plas, G., D'Orazi, V., Sissa, E.,
VSP Zurlo, A., Rigliaco, E., Schmidt, T., Langlois, M., Vigan, A., Ubeira Gabellini,
VSP M.G., Desidera, S., Antoniucci, S., Barbieri, M., Benisty, M., Boccaletti, A.,
VSP Claudi, R., Fedele, D., Gasparri, D., Henning, T., Kasper, M., Lagrange, A.-M.,
VSP A&A 624, A4, 2019
VSP Grandjean, A., Lagrange, A.-M., Beust, H., Rodet, L., Milli, J., Rubini, P.,
VSP Babusiaux, C., Meunier, N., Delorme, P., Aigrain, S., Zicher, N., Bonnefoy, M.,
VSP Biller, B.A., Baudino, J.-L., Bonavita, M., Boccaletti, A., Cheetham, A., Girard,
VSP J.H., Hagelberg, J., Janson, M., Lannier, J., Lazzoni, C., Ligi, R., Maire, A.-L.,
VSP A&A 627, L9, 2019
VSP Rainot, A., Reggiani, M., Sana, H., Bodensteiner, J., Gomez-Gonzalez, C.A., Absil,
VSP O., Christiaens, V., Delorme, P., Almeida, L.A., Caballero-Nieves, S., De Ridder,
VSP Wagner, K., Apai, D., Kasper, M., McClure, M., Robberto, M. & Currie, T.
VSP Jensen-Clem, R., Millar-Blanchaer, M.A., van Holstein, R.G., Mawet, D., Graham, J.,
VSP Kasper, M., Santhakumari, K.K.R., Herbst, T.M., van Boekel, R., Menard, F.,
VSP Kammerer, J., Kasper, M., Ireland, M.J., Kohler, R., Laugier, R., Martinache, F.,
VSP A&A 646, A36, 2021
VSP Bohn, A.J., Ginski, C., Kenworthy, M.A., Mamajek, E.E., Meshkat, T., Pecaut, M.J.,
VSP Bonavita, M., Gratton, R., Desidera, S., Squicciarini, V., D'Orazi, V., Zurlo, A.,
VSP Biller, B., Chauvin, G., Fontanive, C., Janson, M., Messina, S., Menard, F., Meyer,
VSP Reggiani, M., Rainot, A., Sana, H., Almeida, L.A., Caballero-Nieves, S., Kratter,
VSP Biller, B.A., Grandjean, A., Messina, S., Desidera, S., Delorme, P., Lagrange,
VSP A.-M., Hambsch, F.-J., Mesa, D., Janson, M., Gratton, R., D'Orazi, V., Langlois,
VSP M., Maire, A.-L., Schlieder, J., Henning, T., Zurlo, A., Hagelberg, J., Brown-
VSP Sevilla, S., Romero, C., Bonnefoy, M., Chauvin, G., Feldt, M., Meyer, M. Vigan, A.,
VSP Pavlov, A., Soenke, C., LeMignant, D., & Roux, A.
VSP Chomez, A., Squicciarini, V., Lagrange, A.-M., Delorme, P., Viswanath, G., Janson,
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
18187-1347 DCH 31 GH 1998 1 253 1.2 11.96   B5 181842.20-134651.6

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

 
 
WDS 18187-1347 DCH 31 GH : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18187-1347 DCH 31 GH : MEASURES
 
 
No records found.

 
 
WDS 18187-1347 : VIRTUAL EYEPIECE
 
 

18187-1347 DCH 28A mag 11.76 18187-1347 DCH 28B sep 0.8 P.A. 224.50 mag 13.96 18187-1347 DCH 29C sep 15.1 P.A. 75.00 mag 9.64 Sp B1V 18187-1347 DCH 29D sep 14.8 P.A. 79.00 mag 10.63 18187-1347 DCH 30E sep 30.7 P.A. 66.20 mag 11.57 18187-1347 DCH 30F sep 31.0 P.A. 67.40 mag 14.15 18187-1347 DCH 31G sep 35.6 P.A. 83.20 mag 10.64 Sp B5 18187-1347 DCH 31H sep 34.4 P.A. 83.60 mag 15.09 18187-1347 DCH 32I sep 37.4 P.A. 117.90 mag 13.36 18187-1347 DCH 32J sep 37.1 P.A. 116.60 mag 15.41 18187-1347 VSP 69K sep 44.1 P.A. 83.80 mag 8.8 Sp O9.5V 18187-1347 VSP 69L sep 43.2 P.A. 83.40 mag 16.7 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18187-1347 : ALADIN DSS IMAGE @ 18h 18m 42.20s -13° 46' 51.6"
 
 
 
 
WDS 18187-1347 DCH 31 GH : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18187-1347 DCH 31GH distance=0' 18187-1347 VSP 69KL distance=1' 18187-1347 DCH 30EF distance=1' 18187-1347 DCH 29CD distance=1' 18187-1347 DCH 32IJ distance=1' 18187-1347 DCH 28AB distance=1' 18188-1346 VSP 67Aa,Ab distance=1' 18188-1346 VSP 67Aa,Ac distance=1' 18188-1346 VSP 67Aa,Ad distance=1' 18186-1347 DCH 24AB distance=1' 18186-1346 DCH 25EF distance=2' 18186-1346 DCH 23CD distance=2' 18187-1346 DCH 27 distance=2' 18188-1348 DCH 39 distance=2' 18186-1347 DBR 291CD distance=2' 18186-1346 DCH 22AB distance=2' 18187-1345 SNA 89AB distance=2' 18187-1345 SNA 89AC distance=2' 18187-1345 SNA 89AD distance=2' 18187-1345 SNA 89AE distance=2' 18186-1348 SNA 87Ha,Hb distance=2' 18186-1348 SNA 87HI distance=2' 18186-1348 SNA 87HJ distance=2' 18186-1348 SNA 87HK distance=2' 18188-1347 DCH 38CD distance=2' 18188-1347 DCH 37AB distance=2' 18186-1348 DCH 26AB distance=2' 18186-1348 SNA 88AC distance=2' 18186-1348 SNA 88AD distance=2' 18186-1348 SNA 88AE distance=2' 18186-1348 SNA 88AF distance=2' 18186-1348 SNA 88AG distance=2' 18186-1345 DCH 21 distance=2' 18187-1349 DCH 34CD distance=3' 18187-1349 DCH 35EF distance=3' 18189-1347 DCH 41AB distance=3' 18187-1349 DCH 33AB distance=3' 18188-1349 DCH 40 distance=3' 18185-1345 DCH 19 distance=3' 18189-1347 DCH 42CD distance=4' 18189-1349 DCH 43 distance=4' 18189-1348 HDS2590AB distance=4' 18189-1348 SNA 91Aa,Ab distance=4' 18190-1349 DBR 292 distance=5' 18184-1344 DBR 290 distance=5' 18185-1344 SHN 229 distance=5' 18186-1341 DCH 20 distance=7' 18191-1344 DCH 44 distance=7' 18182-1347 DCH 18 distance=8' 18187-1356 DCH 36 distance=10' 18179-1415 BRT2748 distance=31' 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 18187-1347 DCH 31 GH 253 1.2 0
Show 18187-1347 VSP 69 KL 281 1.0 1
Show 18187-1347 DCH 30 EF 136 0.7 1
Show 18187-1347 DCH 29 CD 185 1.1 1
Show 18187-1347 DCH 32 IJ 7 0.9 1
Show 18187-1347 DCH 28 AB 225 0.8 1
Show 18188-1346 VSP 67 Aa,Ab 249 0.7 1
Show 18188-1346 VSP 67 Aa,Ac 346 0.7 1
Show 18188-1346 VSP 67 Aa,Ad 208 0.8 1
Show 18186-1347 DCH 24 AB 30 0.5 1
Show 18186-1346 DCH 25 EF 295 1.1 2
Show 18186-1346 DCH 23 CD 322 0.8 2
Show 18187-1346 DCH 27 120 0.8 2
Show 18188-1348 DCH 39 254 0.5 2
Show 18186-1347 DBR 291 CD 99 3.1 2
Show 18186-1346 DCH 22 AB 346 0.6 2
Show 18187-1345 SNA 89 AB 344 5.1 2
Show 18187-1345 SNA 89 AC 249 5.1 2
Show 18187-1345 SNA 89 AD 206 5.5 2
Show 18187-1345 SNA 89 AE 241 6.2 2
Show 18186-1348 SNA 87 Ha,Hb 49 0.0 2
Show 18186-1348 SNA 87 HI 297 2.7 2
Show 18186-1348 SNA 87 HJ 140 3.3 2
Show 18186-1348 SNA 87 HK 68 5.8 2
Show 18188-1347 DCH 38 CD 90 1.4 2
Show 18188-1347 DCH 37 AB 307 0.7 2
Show 18186-1348 DCH 26 AB 306 0.2 2
Show 18186-1348 SNA 88 AC 5 3.7 2
Show 18186-1348 SNA 88 AD 247 3.5 2
Show 18186-1348 SNA 88 AE 177 3.8 2
Show 18186-1348 SNA 88 AF 126 5.9 2
Show 18186-1348 SNA 88 AG 305 6.6 2
Show 18186-1345 DCH 21 299 0.1 2
Show 18187-1349 DCH 34 CD 273 1.2 3
Show 18187-1349 DCH 35 EF 153 0.7 3
Show 18189-1347 DCH 41 AB 261 1.0 3
Show 18187-1349 DCH 33 AB 95 0.4 3
Show 18188-1349 DCH 40 297 1.4 3
Show 18185-1345 DCH 19 231 0.7 3
Show 18189-1347 DCH 42 CD 320 1.3 4
Show 18189-1349 DCH 43 268 1.5 4
Show 18189-1348 HDS2590 AB 353 2.1 4
Show 18189-1348 SNA 91 Aa,Ab 212 0.0 4
Show 18190-1349 DBR 292 61 2.0 5
Show 18184-1344 DBR 290 285 2.5 5
Show 18185-1344 SHN 229 -1 0.1 5
Show 18186-1341 DCH 20 228 0.5 7
Show 18191-1344 DCH 44 324 0.6 7
Show 18182-1347 DCH 18 288 1.4 8
Show 18187-1356 DCH 36 235 1.4 10
Show 18179-1415 BRT2748 82 2.8 31

 
 
WDS 18187-1347 : COMPONENTS
 
 
  A B C D E F G H I J K
B pa=224.5°
sep=0.77"
 
C pa=75.0°
sep=15.08"
pa=73.6°
sep=15.75"
 
D pa=79.0°
sep=14.75"
pa=77.3°
sep=15.39"
pa=184.7°
sep=1.08"
 
E pa=66.2°
sep=30.73"
pa=65.7°
sep=31.45"
pa=57.9°
sep=15.99"
pa=54.9°
sep=16.66"
 
F pa=67.4°
sep=30.98"
pa=66.9°
sep=31.69"
pa=60.3°
sep=16.15"
pa=57.3°
sep=16.78"
pa=136.3°
sep=0.70"
 
G pa=83.2°
sep=35.65"
pa=82.5°
sep=36.25"
pa=89.2°
sep=20.83"
pa=86.2°
sep=20.97"
pa=138.4°
sep=10.97"
pa=138.5°
sep=10.27"
 
H pa=83.6°
sep=34.44"
pa=82.8°
sep=35.04"
pa=90.2°
sep=19.65"
pa=87.0°
sep=19.77"
pa=144.5°
sep=10.51"
pa=145.1°
sep=9.82"
pa=253.2°
sep=1.23"
 
I pa=117.9°
sep=37.41"
pa=116.8°
sep=37.64"
pa=139.2°
sep=28.29"
pa=137.6°
sep=27.54"
pa=170.6°
sep=30.31"
pa=171.4°
sep=29.73"
pa=186.1°
sep=21.82"
pa=183.1°
sep=21.37"
 
J pa=116.6°
sep=37.11"
pa=115.5°
sep=37.35"
pa=137.8°
sep=27.71"
pa=136.2°
sep=26.98"
pa=170.1°
sep=29.47"
pa=170.9°
sep=28.89"
pa=186.1°
sep=20.95"
pa=182.9°
sep=20.50"
pa=6.6°
sep=0.87"
 
K pa=83.8°
sep=44.11"
pa=83.1°
sep=44.71"
pa=88.2°
sep=29.30"
pa=86.2°
sep=29.44"
pa=115.8°
sep=17.47"
pa=114.9°
sep=16.82"
pa=85.9°
sep=8.47"
pa=84.3°
sep=9.68"
pa=25.8°
sep=24.77"
pa=26.5°
sep=23.95"
 
L pa=83.4°
sep=43.17"
pa=82.7°
sep=43.77"
pa=87.8°
sep=28.33"
pa=85.6°
sep=28.48"
pa=116.7°
sep=16.52"
pa=115.8°
sep=15.86"
pa=84.0°
sep=7.52"
pa=82.5°
sep=8.73"
pa=23.6°
sep=24.53"
pa=24.2°
sep=23.70"
pa=280.7°
sep=0.99"
 
 
18187-1347 A
 
 
Coord arcsec 2000 181839.77-134655.8 Mag 11.76 PmRA -10.00 PmDE -2.0
Tycho2 5689-00209-1
Tycho2
Tycho2 5689-00209-1 Pflag RAmdeg 274.65989904 DEmdeg -13.78574496
PmRA -1.6 PmDE 7.0 E RAmdeg 73 E DEmdeg 89
E pmRA 2.2 E pmDE 2.3 EpRAm 1976.09 EpDEm 1967.60
Num 3 Q RAmdeg 0.4 Q DEmdeg 1.5 Q pmRA 0.4
Q pmDE 1.5 BTmag 11.821 E BTmag 0.136 VTmag 11.323
E VTmag 0.148 Prox 253 TYC HIP
CCDM RAdeg 274.65990306 DEdeg -13.78576111 EpRA 1990 1.83
EpDE 1990 1.79 E RAdeg 80.9 E DEdeg 104.9 Posflg
Corr 0.0
 
 
18187-1347 B
 
 
Coord arcsec 2000 181839.73-134656.3 Mag 13.96 Delta magnitude 2.2 Coordinate calculated yes
 
 
18187-1347 C
 
 
Coord arcsec 2000 181840.77-134651.9 Mag 9.64 Spectral class B1V (blue-white) PmRA -1.00
PmDE 2.0 Delta magnitude 2.12
 
 
18187-1347 D
 
 
Coord arcsec 2000 181840.76-134653.0 Mag 10.63 Delta magnitude 1.13 Coordinate calculated yes
 
 
18187-1347 E
 
 
Coord arcsec 2000 181841.70-134643.4 Mag 11.57 PmRA -4.00 PmDE -1.0
Delta magnitude 0.19
 
 
18187-1347 F
 
 
Coord arcsec 2000 181841.73-134643.9 Mag 14.15 Delta magnitude 2.39 Coordinate calculated yes
 
 
18187-1347 G
 
 
Coord arcsec 2000 181842.20-134651.6 Mag 10.64 Spectral class B5 (blue-white) PmRA -3.00
PmDE 1.0 Tycho2 5689-00637-1 Delta magnitude 1.12
Tycho2
Tycho2 5689-00637-1 Pflag RAmdeg 274.66981063 DEmdeg -13.78118973
PmRA -0.7 PmDE -0.6 E RAmdeg 44 E DEmdeg 37
E pmRA 2.0 E pmDE 2.0 EpRAm 1983.01 EpDEm 1978.89
Num 4 Q RAmdeg 1.1 Q DEmdeg 1.5 Q pmRA 1.1
Q pmDE 1.5 BTmag 11.328 E BTmag 0.088 VTmag 11.030
E VTmag 0.105 Prox 294 TYC HIP
CCDM RAdeg 274.66981972 DEdeg -13.78116222 EpRA 1990 1.80
EpDE 1990 1.68 E RAdeg 51.7 E DEdeg 69.7 Posflg
Corr 0.0
 
 
18187-1347 H
 
 
Coord arcsec 2000 181842.12-134652.0 Mag 15.09 Delta magnitude 3.33 Coordinate calculated yes
 
 
18187-1347 I
 
 
Coord arcsec 2000 181842.04-134713.3 Mag 13.36 PmRA -15.00 PmDE 11.0
SAO 142216 Delta magnitude 1.6
SAO
SAO 142216 DelFlag RA1950 PmRA1950 -0.0011
DE1950 PmDE1950 -0.031 Vmag 9.5 SpType G0
Double code Source 26 CatNum 6147 DM BD-09 4687
DMcomp BDsup HD 168160 M HD 0
GC RA1950rad 4.78238886 DE1950rad -0.16592231 PmRA2000 -0.0009
PmDE2000 -0.029
 
 
18187-1347 J
 
 
Coord arcsec 2000 181842.05-134712.4 Mag 15.41 Delta magnitude 3.65 Coordinate calculated yes
 
 
18187-1347 K
 
 
Coord arcsec 2000 181842.78-134651.0 Mag 8.8 Spectral class O9.5V (blue) PmRA 0.00
PmDE -2.0 SAO 161312 DM BD-12 4991 Delta magnitude 2.96
SAO
SAO 161312 DelFlag RA1950 PmRA1950 -0.0012
DE1950 PmDE1950 0.004 Vmag 8.2 SpType B9
Double code Source 20 CatNum 6239 DM BD-12 4991
DMcomp BDsup HD 168135 M HD 0
GC RA1950rad 4.78236005 DE1950rad -0.21772981 PmRA2000 -0.001
PmDE2000 0.006
 
 
18187-1347 L
 
 
Coord arcsec 2000 181842.71-134650.8 Mag 16.7 Delta magnitude 4.94 Coordinate calculated yes