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Doubles in session


Current system
01218-2408
SEE 13
HD 8281


Nearby doubles
29' : 01236-2421
SE 1

36' : 01228-2440
BWL 63

39' : 01189-2406
LDS2184

49' : 01250-2430
SKF2151AB

59' : 01184-2332
LDS2182AB

60' : 01178-2431
TDS1833

61' : 01182-2330
SKF1371

75' : 01189-2304
LDS2183

78' : 01185-2511
YSC 82

81' : 01245-2519
B 18

84' : 01171-2314
HWE 3

85' : 01186-2255
FAR 24

88' : 01241-2246
B 17

90' : 01187-2249
HDO 47

91' : 01188-2529
NSN 236

97' : 01219-2545
HJ 2040AB

98' : 01179-2246
KPP2556

101' : 01232-2230
TDS1861

101' : 01291-2410
SKF 334

101' : 01282-2319
RAO 533

107' : 01141-2427
TDS1810

108' : 01276-2520
I 444

110' : 01147-2314
LDS2177

117' : 01198-2214
LDS2186

118' : 01151-2254
HWE 2

118' : 01138-2325
UC 522



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

01218-2408 SEE 13 (HD 8281)

 
 
01h 21m 46.64s -24° 07' 41.0" P.A. 177.00 sep 1.3 mag 8.89,9.29 Sp G1V dist. 86.06 pc (280.73 l.y.)
 
 
Coord 2000 01218-2408 Discov num SEE  13 Comp Coord arcsec 2000 01 21 46.64 -24 07 41.0
Date first 1897 Date last 2016 Obs 31
Pa first 126 Pa last 176.6 P.A. Now (θ) 176.6°
Sep first 0.2 Sep last 1.265 Sep. Now (ρ) 1.265"
Mag pri 8.89 Mag sec 9.29 delta mag (ΔM) 0.4 Spectral class G1V (yellow)
Pri motion ra +073 Sec motion ra +073
Pri motion dec +027 Sec motion dec +027
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 8281 Constellation Cetus SAO 166988 HIP 6367
Tycho2 6425-01613-1 Gaia DR2 5040507858341584768 HD 8281 ADS 1102
CD CD-24 588 CP CP-24 155 Distance 86.06 Distance ly 280.73
 
 
ORBITAL ELEMENTS
 
 
Period (P)1530.34y Periastron (T)1846.51y Semi-major axis (a)2.021a
Eccentricity (e)0.9 Inclination (i)67.2° Longitude of periastron (ω)148.1°
Node (Ω)207° Notesn ReferenceHrt2001b
Equinox2000 Last observation1991 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 174.4 1.197
2001 174.5 1.204
2002 174.6 1.211
2003 174.7 1.218
2004 174.8 1.225
2005 174.9 1.232
2006 175.0 1.239
2007 175.2 1.246
2008 175.3 1.253
2009 175.4 1.260
2010 175.5 1.267
2011 175.6 1.273
2012 175.7 1.280
2013 175.8 1.287
2014 175.9 1.294
2015 176.0 1.301
2016 176.0 1.308
2017 176.1 1.314
2018 176.2 1.321
2019 176.3 1.328
2020 176.4 1.335
2021 176.5 1.341
2022 176.6 1.348
2023 176.7 1.355
2024 176.8 1.361
2025 176.9 1.368
2026 177.0 1.375
2027 177.0 1.381
2028 177.1 1.388
2029 177.2 1.394
2030 177.3 1.401


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds01218-2408a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 01218-2408 SEE 13 (HD 8281) : NOTES
 
 
discov_num notes refcode
SEE 13 Motion direct. A premature orbit has been computed.
 
 
REFERENCES
 
 
refcode metd author reference
Hrt2001b orb - Hartkopf, W.I. & Mason, B.D. 2001IAUDS.145....1H
Hrt2001b Inf. Circ. 145, 1, 2001
 
 
DISCOVERER
 
 
idgroup discov author
1 SEE See, T.J.J.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
01218-2408 SEE 13 2006 28 179 1.0 8.89 9.29 G1V NOD 012146.64-240741.0
01218-2408 SEE 13 2008 29 175 1.2 8.89 9.29 G1V NOD 012146.64-240741.0
01218-2408 SEE 13 2016 31 177 1.3 8.89 9.29 G1V NO 012146.64-240741.0

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

 
 
WDS 01218-2408 SEE 13 (HD 8281) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 01218-2408 SEE 13 (HD 8281) : MEASURES
 
 
No records found.

 
 
WDS 01218-2408 (HD 8281) : VIRTUAL EYEPIECE
 
 

01218-2408 SEE 13A mag 8.89 Sp G1V 01218-2408 SEE 13B sep 1.3 P.A. 176.90 mag 9.29 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 01218-2408 (HD 8281) : ALADIN DSS IMAGE @ 01h 21m 46.64s -24° 07' 41.0"
 
 
 
 
WDS 01218-2408 SEE 13 (HD 8281) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

01218-2408 SEE 13 distance=0' 01236-2421 SE 1 distance=29' 01228-2440 BWL 63 distance=36' 01189-2406 LDS2184 distance=39' 01250-2430 SKF2151AB distance=49' 01250-2430 YSC 83Ba,Bb distance=50' 01184-2332 SKF1372AC distance=59' 01184-2332 LDS2182AB distance=59' 01178-2431 TDS1833 distance=60' 01182-2330 SKF1371 distance=61' 01189-2304 LDS2183 distance=75' 01185-2511 YSC 82 distance=78' 01245-2519 B 18 distance=81' 01171-2314 HWE 3 distance=84' 01186-2255 FAR 24 distance=85' 01241-2246 B 17 distance=88' 01187-2249 HDO 47 distance=90' 01188-2529 NSN 236 distance=91' 01219-2545 HJ 2040AB distance=97' 01219-2545 HJ 2040AC distance=97' 01179-2246 KPP2556 distance=98' 01232-2230 TDS1861 distance=101' 01291-2410 SKF 334 distance=101' 01282-2319 RAO 533 distance=101' 01141-2427 TDS1810 distance=107' 01276-2520 I 444 distance=108' 01147-2314 LDS2177 distance=110' 01198-2214 LDS2186 distance=117' 01151-2254 HWE 2 distance=118' 01138-2325 UC 522 distance=118' 01132-2433 UC 521 distance=120' 01129-2446 LDS 38AB distance=126' 01129-2446 TOK 452BC distance=126' 01126-2348 SKF1369 distance=127' 01125-2400 RST2257 distance=128' 01173-2215 LDS2179 distance=128' 01262-2212 SKF 201 distance=132' 01312-2436 SKF2153 distance=133' 01274-2220 RST2261 distance=133' 01155-2549 RST1210 distance=133' 01275-2556 SKF1266 distance=134' 01248-2614 RST1218 distance=135' 01242-2157 SKF2150 distance=136' 01261-2618 SWR 2 distance=143' 01239-2147 SKF1375 distance=144' 01265-2620 NSC 6 distance=148' 01187-2630 SEE 11AB distance=149' 01187-2630 TOK 182Ba,Bb distance=149' 01300-2231 I 445A,BC distance=149' 01300-2231 I 445BC distance=150' 01262-2625 UC 557 distance=151' 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 01218-2408 SEE 13 177 1.3
Show 01236-2421 SE 1 90 3.1 29
Show 01228-2440 BWL 63 217 1.4 36
Show 01189-2406 LDS2184 64 85.0 39
Show 01250-2430 SKF2151 AB 54 145.4 49
Show 01250-2430 YSC 83 Ba,Bb 119 0.3 50
Show 01184-2332 SKF1372 AC 311 102.7 59
Show 01184-2332 LDS2182 AB 66 7.0 59
Show 01178-2431 TDS1833 44 0.6 60
Show 01182-2330 SKF1371 235 118.4 61
Show 01189-2304 LDS2183 158 32.2 75
Show 01185-2511 YSC 82 264 0.1 78
Show 01245-2519 B 18 329 0.2 81
Show 01171-2314 HWE 3 288 7.8 84
Show 01186-2255 FAR 24 10 1.1 85
Show 01241-2246 B 17 47 0.5 88
Show 01187-2249 HDO 47 62 9.6 90
Show 01188-2529 NSN 236 203 4.4 91
Show 01219-2545 HJ 2040 AB 4 14.1 97
Show 01219-2545 HJ 2040 AC 257 30.7 97
Show 01179-2246 KPP2556 249 23.1 98
Show 01232-2230 TDS1861 131 1.8 101
Show 01291-2410 SKF 334 249 20.1 101
Show 01282-2319 RAO 533 355 1.1 101
Show 01141-2427 TDS1810 35 0.5 107
Show 01276-2520 I 444 99 0.6 108
Show 01147-2314 LDS2177 290 14.3 110
Show 01198-2214 LDS2186 228 9.9 117
Show 01151-2254 HWE 2 141 15.0 118
Show 01138-2325 UC 522 57 47.2 118
Show 01132-2433 UC 521 108 68.1 120
Show 01129-2446 LDS 38 AB 288 44.0 126
Show 01129-2446 TOK 452 BC 186 999.9 126
Show 01126-2348 SKF1369 63 167.0 127
Show 01125-2400 RST2257 38 3.6 128
Show 01173-2215 LDS2179 186 75.6 128
Show 01262-2212 SKF 201 114 2.7 132
Show 01312-2436 SKF2153 253 58.0 133
Show 01274-2220 RST2261 342 0.7 133
Show 01155-2549 RST1210 143 0.4 133
Show 01275-2556 SKF1266 124 8.1 134
Show 01248-2614 RST1218 336 5.0 135
Show 01242-2157 SKF2150 348 11.0 136
Show 01261-2618 SWR 2 82 44.4 143
Show 01239-2147 SKF1375 65 21.4 144
Show 01265-2620 NSC 6 216 7.9 148
Show 01187-2630 SEE 11 AB 300 1.5 149
Show 01187-2630 TOK 182 Ba,Bb 218 0.4 149
Show 01300-2231 I 445 A,BC 40 69.8 149
Show 01300-2231 I 445 BC 355 2.1 150
Show 01262-2625 UC 557 326 22.8 151

 
 
WDS 01218-2408 : COMPONENTS
 
 
  A
B pa=176.9°
sep=1.26"
 
 
01218-2408 A
 
 
Componente originario normalizzato AB Name HD 8281 Coord arcsec 2000 012146.64-240741.0 Mag 8.89
Spectral class G1V (yellow) PmRA 73.00 PmDE 27.0 SAO 166988
HIP 6367 Tycho2 6425-01613-1 HD 8281 CD CD-24 588
CP CP-24 155
Tycho2
Tycho2 6425-01613-1 Pflag P RAmdeg 20.44431952 DEmdeg -24.12805946
PmRA 72.8 PmDE 26.9 E RAmdeg 8 E DEmdeg 9
E pmRA 2.6 E pmDE 2.4 EpRAm 1991.49 EpDEm 1991.18
Num 5 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 1.0 BTmag 9.539 E BTmag 0.019 VTmag 8.892
E VTmag 0.014 Prox 12 TYC T HIP 6367
CCDM A RAdeg 20.44412417 DEdeg -24.12801583 EpRA 1990 1.65
EpDE 1990 1.41 E RAdeg 7.9 E DEdeg 8.9 Posflg D
Corr -0.3
SAO
SAO 166988 DelFlag RA1950 PmRA1950 0.0056
DE1950 PmDE1950 0.006 Vmag 7.8 SpType G0
Double code Source 25 CatNum 646 DM CD-24 588
DMcomp BDsup HD 8281 M HD 0
GC RA1950rad 0.34637411 DE1950rad -0.42568512 PmRA2000 0.0057
PmDE2000 0.002
Hipparcos
Catalog H HIP 6367 Proxy H RAhms 01 21 46.59
DEdms -24 07 40.9 Vmag 8.28 VarFlag R Vmag H
RAdeg 20.4441 DEdeg -24.128 AstroRef A Plx 8.97
CCDM 01218-2408 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 173 Rho 1.139 HD 8281 BD
CD CD-24 588 CP CP-24 155 Dm number -24 588 VIred 0.64
SpType G1V R SpType Coord arcsec 2000 012146.59-240740.9
Hipparcos 2
HIP 6367 Sn 15 So 3 Nc 2
RArad 0.3568170456 DErad -0.4211133102 Plx 11.62 PmRA 72.08
PmDE 23.9 E RArad 1.19 E DErad 0.62 E Plx 1.45
E pmRA 1.56 E pmDE 0.67 Hpmag 8.4048 E Hpmag 0.0013
SHp 0.013 VA 0 BV 0.596 E BV 0.013
VI 0.67
CCDM
Ccdm 01218-2408 RComp Comp A Note1
Note2 Discov num DRAs -1.35 DDEs 17.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.0 Sp G0 PmNote *
PmRA 76 PmDE 6 Dm number -24 588 Cat1 CD
Name2 166988 Cat2 SAO HD 8281 M HD
ADS BDS A 1102 M ADS BDS N IDS IDS 01170S2439A
HIC 6367
 
 
01218-2408 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 012146.65-240742.3 Mag 9.29 PmRA 73.00
PmDE 27.0 HIP 6367 Tycho2 6425-01613-2 Calc delta mag 0.4
Calc coord yes
Tycho2
Tycho2 6425-01613-2 Pflag P RAmdeg 20.44431952 DEmdeg -24.12805946
PmRA 72.8 PmDE 26.9 E RAmdeg 8 E DEmdeg 9
E pmRA 2.6 E pmDE 2.4 EpRAm 1991.49 EpDEm 1991.18
Num 5 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 1.0 BTmag 9.971 E BTmag 0.023 VTmag 9.288
E VTmag 0.018 Prox 12 TYC HIP 6367
CCDM B RAdeg 20.44415417 DEdeg -24.12833556 EpRA 1990 1.65
EpDE 1990 1.41 E RAdeg 10.7 E DEdeg 12.1 Posflg D
Corr -0.3
Hipparcos
Catalog H HIP 6367 Proxy H RAhms 01 21 46.59
DEdms -24 07 40.9 Vmag 8.28 VarFlag R Vmag H
RAdeg 20.4441 DEdeg -24.128 AstroRef A Plx 8.97
CCDM 01218-2408 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 173 Rho 1.139 HD 8281 BD
CD CD-24 588 CP CP-24 155 Dm number -24 588 VIred 0.64
SpType G1V R SpType Coord arcsec 2000 012146.59-240740.9
Hipparcos 2
HIP 6367 Sn 15 So 3 Nc 2
RArad 0.3568170456 DErad -0.4211133102 Plx 11.62 PmRA 72.08
PmDE 23.9 E RArad 1.19 E DErad 0.62 E Plx 1.45
E pmRA 1.56 E pmDE 0.67 Hpmag 8.4048 E Hpmag 0.0013
SHp 0.013 VA 0 BV 0.596 E BV 0.013
VI 0.67
CCDM
Ccdm 01218-2408 RComp Comp B Note1
Note2 Discov num SEE 13 DRAs DDEs
R dRAs Year 1959 Theta 173 Rho 0.9
Obs 13 Vmag 9.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 1102 M ADS BDS N N IDS IDS 01170S2439B
HIC 6367