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Current system
03178-7029
R 28
HD 20954


Nearby doubles
21' : 03154-7015
HLN 4

23' : 03138-7018
R 23

27' : 03221-7022
HEI 628

29' : 03221-7048
HEI 629

32' : 03230-7047
HEI 630AB

32' : 03185-6957
R 29

45' : 03092-7042
B 2081

47' : 03084-7033
HLN 19

60' : 03154-6930
R 22

61' : 03188-7129
HEI 627

63' : 03302-7024
B 2084AB

73' : 03034-7029
HJ 3552

74' : 03322-7047
KPP3533

81' : 03111-6917
DAM 783

97' : 03316-7139
TDS2561

99' : 02582-7046
TOI 188

103' : 03375-7100
HEI 633

114' : 03023-7154
FIN 360

114' : 03085-6846
UC 956

120' : 03105-6836
EGG 6

120' : 03044-7209
UC 940

125' : 03367-6912
TVB 53

133' : 03129-6819
DON 50

133' : 03249-6823
LDS 96

134' : 03211-6817
KPP3520

143' : 03255-6809
LDS 97



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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

03178-7029 R 28 (HD 20954)

 
 
03h 17m 49.32s -70° 28' 50.2" P.A. 252.00 sep 23.8 mag 8.68,11.67 Sp K2III dist. 265.96 pc (867.56 l.y.)
 
 
Coord 2000 03178-7029 Discov num R    28 Comp Coord arcsec 2000 03 17 49.32 -70 28 50.2
Date first 1978 Date last 2010 Obs 4
Pa first 246 Pa last 252.2 P.A. Now (θ) 252.2°
Sep first 25.5 Sep last 23.81 Sep. Now (ρ) 23.81"
Mag pri 8.68 Mag sec 11.67 delta mag (ΔM) 2.99 Spectral class K2III (yellow-orange)
Pri motion ra -015 Sec motion ra +029
Pri motion dec -043 Sec motion dec +017
Notes N (See Notes)
rPM=1.634
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 20954 Constellation Hydrus SAO 255974 HIP 15340
Tycho2 9155-00804-1 Gaia DR2 4643059350071496064 HD 20954 CP CP-70 220
Distance 265.96 Distance ly 867.56
 
 
WDS 03178-7029 R 28 (HD 20954) : NOTES
 
 
discov_num notes refcode
R 28 Aka RSS 62.
 
 
REFERENCES
 
 
refcode metd author reference
R__1871 Ma - Russell, H.C. 1884QB821.R94......
R__1871 Sydney Obs. Results, 1871-1881
R__1882 Ma j Russell, H.C. 1882MmRAS..47..109R
R__1882 MemRAS 47, 109, 1882
R__1892 Ma - Russell, H.C. 1892MmRAS..50...57R
R__1892 MemRAS 50, 57, 1892
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
03178-7029 R 28 1998 3 251 24.6 8.68 11.67 K2III N 031749.32-702850.2
03178-7029 R 28 2010 4 252 23.6 8.68 11.67 K2III N 031749.32-702850.2
03178-7029 R 28 2015 5 252 23.4 8.68 11.67 K2III N 031749.32-702850.2

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

 
 
WDS 03178-7029 R 28 (HD 20954) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03178-7029 R 28 (HD 20954) : MEASURES
 
 
No records found.

 
 
WDS 03178-7029 (HD 20954) : VIRTUAL EYEPIECE
 
 

03178-7029 R 28A mag 8.68 Sp K2III 03178-7029 R 28B sep 10.5 P.A. 226.10 mag 11.67 virtual eyepiece
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Radius:
Components only
 
 
WDS 03178-7029 (HD 20954) : ALADIN DSS IMAGE @ 03h 17m 49.32s -70° 28' 50.2"
 
 
 
 
WDS 03178-7029 R 28 (HD 20954) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03178-7029 R 28 distance=0' 03154-7015 HLN 4 distance=21' 03138-7018 R 23 distance=23' 03221-7022 HEI 628 distance=27' 03221-7048 HEI 629 distance=29' 03230-7047 HEI 630AB distance=32' 03230-7047 HEI 630BC distance=32' 03185-6957 R 29 distance=32' 03092-7042 B 2081 distance=45' 03084-7033 HLN 19 distance=47' 03154-6930 R 22 distance=60' 03188-7129 HEI 627 distance=61' 03302-7024 B 2084AB distance=63' 03302-7024 TOI 487AC distance=63' 03034-7029 HJ 3552 distance=73' 03322-7047 KPP3533 distance=74' 03111-6917 DAM 783 distance=81' 03316-7139 TDS2561 distance=97' 02582-7046 TOI 188 distance=99' 03375-7100 HEI 633 distance=103' 03023-7154 FIN 360 distance=114' 03085-6846 UC 956 distance=114' 03105-6836 EGG 6 distance=120' 03044-7209 UC 940 distance=120' 03367-6912 TVB 53 distance=125' 03129-6819 DON 50 distance=133' 03249-6823 LDS 96 distance=133' 03211-6817 KPP3520 distance=134' 03255-6809 LDS 97 distance=143' 03276-7251 SKF 19 distance=150' 03152-6755 DAM 784 distance=155' 03200-7313 UC 986 distance=165' 03269-7315 UC 1007 distance=172' 03031-7310 B 1928 distance=176' 03080-7318 KPP 716 distance=176' 03147-6730 R 21 distance=180' 03228-6730 KPP2033 distance=181' 02592-7309 TDS2405 distance=183' 03351-6750 NZO 3 distance=184' 03048-7324 B 2080 distance=186' 03335-6742 LDS 101AB distance=188' 03335-6742 BAU 13AC distance=188' 03325-6728 TDS2570 distance=197' 03333-6727 DON 53 distance=201' 03330-6725 TOK 79AB distance=201' 03152-7355 TDS2501 distance=207' 03180-6656 EHR 3 distance=214' 03182-7406 UC 979 distance=218' 03115-7408 R 24 distance=222' 03134-7410 TDS2486 distance=222' 03010-6703 KPP2789 distance=226' 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 03178-7029 R 28 252 23.8
Show 03154-7015 HLN 4 336 8.3 21
Show 03138-7018 R 23 156 34.8 23
Show 03221-7022 HEI 628 311 1.1 27
Show 03221-7048 HEI 629 247 2.2 29
Show 03230-7047 HEI 630 AB 117 2.1 32
Show 03230-7047 HEI 630 BC 260 0.1 32
Show 03185-6957 R 29 230 68.5 32
Show 03092-7042 B 2081 145 0.7 45
Show 03084-7033 HLN 19 66 8.0 47
Show 03154-6930 R 22 260 16.1 60
Show 03188-7129 HEI 627 204 0.4 61
Show 03302-7024 B 2084 AB 201 0.5 63
Show 03302-7024 TOI 487 AC 130 3.0 63
Show 03034-7029 HJ 3552 1 15.6 73
Show 03322-7047 KPP3533 70 2.1 74
Show 03111-6917 DAM 783 333 14.6 81
Show 03316-7139 TDS2561 86 2.4 97
Show 02582-7046 TOI 188 6 1.3 99
Show 03375-7100 HEI 633 150 2.3 103
Show 03023-7154 FIN 360 179 0.1 114
Show 03085-6846 UC 956 246 23.2 114
Show 03105-6836 EGG 6 314 13.5 120
Show 03044-7209 UC 940 219 20.2 120
Show 03367-6912 TVB 53 299 16.2 125
Show 03129-6819 DON 50 72 5.4 133
Show 03249-6823 LDS 96 318 664.8 133
Show 03211-6817 KPP3520 166 2.0 134
Show 03255-6809 LDS 97 46 282.8 143
Show 03276-7251 SKF 19 37 28.8 150
Show 03152-6755 DAM 784 286 6.4 155
Show 03200-7313 UC 986 8 35.3 165
Show 03269-7315 UC 1007 338 22.3 172
Show 03031-7310 B 1928 34 2.9 176
Show 03080-7318 KPP 716 223 6.3 176
Show 03147-6730 R 21 307 37.1 180
Show 03228-6730 KPP2033 82 16.2 181
Show 02592-7309 TDS2405 44 0.4 183
Show 03351-6750 NZO 3 242 4.9 184
Show 03048-7324 B 2080 291 0.9 186
Show 03335-6742 LDS 101 AB 349 11.5 188
Show 03335-6742 BAU 13 AC 29 14.3 188
Show 03325-6728 TDS2570 148 7.3 197
Show 03333-6727 DON 53 310 0.4 201
Show 03330-6725 TOK 79 AB 33 9.2 201
Show 03152-7355 TDS2501 250 0.1 207
Show 03180-6656 EHR 3 17 5.0 214
Show 03182-7406 UC 979 100 52.1 218
Show 03115-7408 R 24 61 34.2 222
Show 03134-7410 TDS2486 10 0.5 222
Show 03010-6703 KPP2789 26 1.7 226

 
 
WDS 03178-7029 : COMPONENTS
 
 
  A
B pa=226.1°
sep=10.50"
 
 
03178-7029 A
 
 
Componente originario normalizzato AB Name HD 20954 Coord arcsec 2000 031749.32-702850.2 Mag 8.68
Spectral class K2III (yellow-orange) PmRA -15.00 PmDE -43.0 SAO 255974
HIP 15340 Tycho2 9155-00804-1 HD 20954 CP CP-70 220
Tycho2
Tycho2 9155-00804-1 Pflag RAmdeg 49.45540754 DEmdeg -70.48072393
PmRA -15.7 PmDE -44.2 E RAmdeg 9 E DEmdeg 9
E pmRA 1.3 E pmDE 1.3 EpRAm 1990.23 EpDEm 1990.44
Num 10 Q RAmdeg 0.4 Q DEmdeg 0.9 Q pmRA 0.5
Q pmDE 0.9 BTmag 10.105 E BTmag 0.026 VTmag 8.681
E VTmag 0.014 Prox 999 TYC T HIP 15340
CCDM RAdeg 49.45551611 DEdeg -70.48062333 EpRA 1990 1.71
EpDE 1990 1.79 E RAdeg 9.3 E DEdeg 8.8 Posflg
Corr 0.0
SAO
SAO 255974 DelFlag RA1950 PmRA1950 -0.0102
DE1950 PmDE1950 -0.086 Vmag 8.1 SpType K5
Double code Source 61 CatNum 708 DM CP-70 220
DMcomp BDsup HD 20954 M HD 0
GC RA1950rad 0.86241095 DE1950rad -1.2332826 PmRA2000 -0.0111
PmDE2000 -0.087
Hipparcos
Catalog H HIP 15340 Proxy RAhms 03 17 49.32
DEdms -70 28 50.2 Vmag 8.53 VarFlag R Vmag H
RAdeg 49.4555 DEdeg -70.4806 AstroRef Plx 2.92
CCDM 03178-7029 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 20954 BD
CD CP CP-70 220 Dm number -70 220 VIred 1.07
SpType K2III R SpType Coord arcsec 2000 031749.32-702850.2
Hipparcos 2
HIP 15340 Sn 5 So 0 Nc 1
RArad 0.8631614948 DErad -1.2301187427 Plx 3.76 PmRA -15.39
PmDE -45.84 E RArad 0.58 E DErad 0.58 E Plx 0.61
E pmRA 0.63 E pmDE 0.68 Hpmag 8.6965 E Hpmag 0.0021
SHp 0.018 VA 0 BV 1.214 E BV 0.022
VI 1.17
CCDM
Ccdm 03178-7029 RComp Comp A Note1
Note2 Discov num DRAs 1.36 DDEs 9.8
R dRAs 40 Year Theta Rho
Obs 2 Vmag 8.5 Sp K5 PmNote
PmRA 11 PmDE -32 Dm number -70 220 Cat1 CPD
Name2 255974 Cat2 SAO HD 20954 M HD
ADS BDS M ADS BDS N IDS * IDS 03175S7051A
HIC 15340
 
 
03178-7029 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 031747.81-702857.5 Mag 11.67 PmRA 29.00
PmDE 17.0 Calc delta mag 2.99 Calc coord yes
CCDM
Ccdm 03178-7029 RComp Comp B Note1
Note2 Discov num RSU DRAs -3.40 DDEs 0.9
R dRAs 40 Year 1978 Theta 246 Rho 25.5
Obs 1 Vmag 12.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS * IDS 03175S7051B
HIC