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Current system
15443+0626
HJ 1277 AB
Unukalhai


Nearby doubles
29' : 15424+0620
CVR 799

32' : 15422+0630
GWP2545

32' : 15444+0657
HEI 854

34' : 15460+0604
TVB 279

43' : 15433+0706
HEI 853

58' : 15404+0622
WIS 290

58' : 15482+0625
BRT2162

62' : 15471+0711
BRT2161

63' : 15484+0616
KPP1222

65' : 15462+0528
GRV 913

76' : 15419+0520
KPP1211

77' : 15458+0738
UC 3057

80' : 15428+0509
A 1125

91' : 15391+0538
GWP2541

91' : 15386+0700
HDS2208

93' : 15407+0741
SLW1122

105' : 15513+0621
CVR 173

106' : 15509+0704
SLW1144

108' : 15461+0441
LDS4590

113' : 15493+0503
A 1126

114' : 15511+0538
UC 214

115' : 15453+0432
AG 198

119' : 15483+0444
SLW1138

122' : 15372+0526
HDS2201

122' : 15361+0615
GWP2534

126' : 15363+0705
UC 3032AB



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

15443+0626 HJ 1277 AB (Unukalhai)

 
 
15h 44m 16.00s +06° 25' 31.9" P.A. 334.00 sep 57.6 mag 2.65,11.80 Sp K2III dist. 22.68 pc (73.98 l.y.)
 
 
Coord 2000 15443+0626 Discov num HJ 1277 Comp AB Coord arcsec 2000 15 44 16.00 +06 25 31.9
Date first 1828 Date last 2014 Obs 15
Pa first 2 Pa last 333.8 P.A. Now (θ) 333.8°
Sep first 50.0 Sep last 57.58 Sep. Now (ρ) 57.58"
Mag pri 2.65 Mag sec 11.80 delta mag (ΔM) 9.15 Spectral class K2III (yellow-orange)
Pri motion ra +134 Sec motion ra -011
Pri motion dec +045 Sec motion dec -009
Notes N L U (See Notes, Linear solution, Proper motion indicates non-physical)
rPM=1.095
This double is not physical.
 
 
15443+0626 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Unukalhai 121157 15 44 16 +06 25 32 HJ 1277 AB 2014 15 334 57.6 2.65 11.80 9.15 <===
Show 121157 15 44 16 +06 25 32 HJ 1277 AC 2020 5 267 146.2 2.74 13.90 11.16
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Unukalhai Constellation Serpens SAO 121157 HIP 77070
Tycho2 0363-01135-1 Gaia DR2 4429785739601541504 HD 140573 HR 5854
GC 21158 ADS 9765 GL Gl 596.2 BD BD+06 3088
Bayer Alpha Serpentis Bayer name Alp Ser Flamsteed 24 Serpentis Flamsteed name 24 Ser
FK5 582 Distance 22.68 Distance ly 73.98 Bayer greek α Ser
Other names UNUK, UNUK EL HAIA, COR SERPENTIS
Meaning snake's neck
 
 
WDS 15443+0626 HJ 1277 AB (Unukalhai) : NOTES
 
 
discov_num notes refcode
HJ 1277 alp Ser = 24 Ser = Unukalhai. Variable?
AB: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
 
 
REFERENCES
 
 
refcode metd author reference
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
 
 
DISCOVERER
 
 
idgroup discov author
1 HJ Herschel, J.F.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15443+0626 HJ 1277 AB 2000 11 336 57.6 2.65 11.80 K2III NLD 154416.00+062531.9
15443+0626 HJ 1277 AB 2013 13 333 57.4 2.65 11.80 K2III NLD 154416.00+062531.9
15443+0626 HJ 1277 AB 2014 15 334 57.6 2.65 11.80 K2III NLDU 154416.00+062531.9

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

 
 
WDS 15443+0626 HJ 1277 AB (Unukalhai) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 15443+0626 HJ 1277 AB (Unukalhai) : MEASURES
 
 
No records found.

 
 
WDS 15443+0626 (Unukalhai) : VIRTUAL EYEPIECE
 
 

15443+0626 HJ 1277A mag 2.65 Sp K2III 15443+0626 HJ 1277B sep 57.5 P.A. 333.90 mag 11.8 15443+0626 HJ 1277C sep 145.3 P.A. 267.00 mag 13.9 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 15443+0626 (Unukalhai) : ALADIN DSS IMAGE @ 15h 44m 16.00s +06° 25' 31.9"
 
 
 
 
WDS 15443+0626 HJ 1277 AB (Unukalhai) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

15443+0626 HJ 1277AB (Unukalhai) distance=0' 15424+0620 CVR 799 distance=29' 15422+0630 GWP2545 distance=32' 15444+0657 HEI 854 distance=32' 15460+0604 TVB 279 distance=34' 15433+0706 HEI 853 distance=43' 15404+0622 WIS 290 distance=58' 15482+0625 BRT2162 distance=58' 15471+0711 BRT2161 distance=62' 15484+0616 KPP1222 distance=63' 15462+0528 GRV 913 distance=65' 15419+0520 KPP1211 distance=76' 15458+0738 UC 3057 distance=77' 15428+0509 A 1125 distance=80' 15391+0538 GWP2541 distance=91' 15386+0700 HDS2208 distance=91' 15407+0741 SLW1122 distance=93' 15513+0621 CVR 173 distance=105' 15509+0704 SLW1144 distance=106' 15461+0441 LDS4590 distance=108' 15493+0503 A 1126 distance=113' 15511+0538 UC 214 distance=114' 15453+0432 AG 198 distance=115' 15483+0444 SLW1138 distance=119' 15372+0526 HDS2201 distance=122' 15361+0615 GWP2534 distance=122' 15363+0705 UC 3032AB distance=126' 15521+0528 A 1128 distance=131' 15360+0711 UC 3031 distance=132' 15359+0712 A 1123 distance=133' 15361+0738 HDS2193 distance=142' 15365+0504 GWP2536 distance=142' 15518+0445 MRG 2 distance=144' 15455+0402 BU 240AB distance=146' 15455+0402 BU 240AC distance=146' 15533+0514 UC 3080 distance=154' 15522+0804 HJ 2793 distance=154' 15518+0811 UC 3073 distance=154' 15421+0859 UC 3044 distance=157' 15451+0348 KPP1668 distance=159' 15348+0739 SLW1112 distance=160' 15449+0905 FMR 227 distance=160' 15543+0528 A 1130 distance=161' 15425+0904 SLW1125 distance=161' 15413+0350 BAL2870 distance=162' 15387+0406 KPP 802 distance=163' 15555+0617 GRV1214 distance=168' 15463+0340 HDS2220 distance=169' 15349+0800 HJ 2785 distance=169' 15554+0553 LDS4601 distance=171' 15545+0505 SMR 66 distance=173' 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 Unukalhai 15443+0626 HJ 1277 AB 334 57.6
Show Unukalhai 15443+0626 HJ 1277 AC 267 146.2
Show 15424+0620 CVR 799 205 16.3 29
Show 15422+0630 GWP2545 288 6.2 32
Show 15444+0657 HEI 854 159 2.4 32
Show 15460+0604 TVB 279 297 1.8 34
Show 15433+0706 HEI 853 74 3.4 43
Show 15404+0622 WIS 290 68 839.0 58
Show 15482+0625 BRT2162 188 4.4 58
Show 15471+0711 BRT2161 289 4.0 62
Show 15484+0616 KPP1222 298 9.4 63
Show 15462+0528 GRV 913 91 8.0 65
Show 15419+0520 KPP1211 288 9.4 76
Show 15458+0738 UC 3057 239 2.9 77
Show 15428+0509 A 1125 278 1.3 80
Show 15391+0538 GWP2541 210 7.7 91
Show 15386+0700 HDS2208 130 1.8 91
Show 15407+0741 SLW1122 19 15.9 93
Show 15513+0621 CVR 173 141 13.4 105
Show 15509+0704 SLW1144 251 28.5 106
Show 15461+0441 LDS4590 233 2.4 108
Show 15493+0503 A 1126 136 0.1 113
Show 15511+0538 UC 214 177 16.4 114
Show 15453+0432 AG 198 144 2.2 115
Show 15483+0444 SLW1138 60 10.9 119
Show 15372+0526 HDS2201 354 0.5 122
Show 15361+0615 GWP2534 322 11.6 122
Show 15363+0705 UC 3032 AB 280 28.7 126
Show 15521+0528 A 1128 350 1.6 131
Show 15360+0711 UC 3031 131 44.6 132
Show 15359+0712 A 1123 65 0.3 133
Show 15361+0738 HDS2193 246 1.5 142
Show 15365+0504 GWP2536 233 27.5 142
Show 15518+0445 MRG 2 333 10.4 144
Show 15455+0402 BU 240 AB 131 2.0 146
Show 15455+0402 BU 240 AC 31 30.6 146
Show 15533+0514 UC 3080 256 68.5 154
Show 15522+0804 HJ 2793 125 10.6 154
Show 15518+0811 UC 3073 345 8.7 154
Show 15421+0859 UC 3044 225 3.9 157
Show 15451+0348 KPP1668 261 12.8 159
Show 15348+0739 SLW1112 241 109.7 160
Show 15449+0905 FMR 227 25 3.8 160
Show 15543+0528 A 1130 329 2.0 161
Show 15425+0904 SLW1125 302 130.7 161
Show 15413+0350 BAL2870 44 9.4 162
Show 15387+0406 KPP 802 8 6.9 163
Show 15555+0617 GRV1214 289 19.5 168
Show 15463+0340 HDS2220 99 0.2 169
Show 15349+0800 HJ 2785 281 18.7 169
Show 15554+0553 LDS4601 282 10.1 171

 
 
WDS 15443+0626 : COMPONENTS
 
 
  A B
B pa=333.9°
sep=57.51"
 
C pa=267.0°
sep=145.28"
pa=243.7°
sep=133.70"
 
 
15443+0626 A
 
 
Common name Unukalhai Meaning snake's neck Other names UNUK, UNUK EL HAIA, COR SERPENTIS Coord arcsec 2000 154416.00+062531.9
Mag 2.65 Spectral class K2III (yellow-orange) PmRA 134.00 PmDE 45.0
SAO 121157 HIP 77070 Tycho2 0363-01135-1 HD 140573
HR 5854 GC 21158 BD BD+06 3088 Bayer Alpha Serpentis
Bayer name Alp Ser Flamsteed 24 Serpentis Flamsteed name 24 Ser FK5 582
Tycho2
Tycho2 0363-01135-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 4.142 E BTmag 0.014 VTmag 2.739
E VTmag 0.009 Prox 999 TYC T HIP 77070
CCDM RAdeg 236.06666361 DEdeg 6.42552222 EpRA 1990 1.63
EpDE 1990 1.47 E RAdeg 3.3 E DEdeg 3.4 Posflg
Corr 0.3
SAO
SAO 121157 DelFlag RA1950 PmRA1950 0.0091
DE1950 PmDE1950 0.044 Vmag 2.8 SpType K0
Double code Source 74 CatNum 582 DM BD+06 3088
DMcomp BDsup HD 140573 M HD 0
GC 21158 RA1950rad 4.10938868 DE1950rad 0.11487141 PmRA2000 0.0092
PmDE2000 0.047
Hipparcos
Catalog H HIP 77070 Proxy RAhms 15 44 16.00
DEdms +06 25 31.9 Vmag 2.63 VarFlag R Vmag H
RAdeg 236.067 DEdeg 6.42552 AstroRef Plx 44.54
CCDM 15442+0626 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 140573 BD BD+06 3088
CD CP Dm number +06 3088 VIred 1.09
SpType K2III R SpType Coord arcsec 2000 154416.00+062531.9
Hipparcos 2
HIP 77070 Sn 5 So 0 Nc 1
RArad 4.1201402784 DErad 0.1121464762 Plx 44.1 PmRA 133.84
PmDE 44.81 E RArad 0.16 E DErad 0.12 E Plx 0.19
E pmRA 0.21 E pmDE 0.19 Hpmag 2.7971 E Hpmag 0.0004
SHp 0.003 VA 0 BV 1.167 E BV 0.015
VI 1.09
 
 
15443+0626 B
 
 
Coord arcsec 2000 154414.31+062623.6 Mag 11.8 PmRA -11.00 PmDE -9.0
Calc delta mag 9.15 Calc coord yes
 
 
15443+0626 C
 
 
Coord arcsec 2000 154406.27+062524.2 Mag 13.9 PmRA -43.00 PmDE 21.0
Calc delta mag 11.25 Calc coord yes