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Doubles in session


Current system
21370+8255
STF 2837
HD 207146


Nearby doubles
6' : 21354+8300
LDS1956

23' : 21322+8316
TDT3014

33' : 21239+8317
HDS3049

45' : 21176+8231
STF2807

48' : 21236+8337
LOC 491

50' : 21440+8208
MLR 251

53' : 21561+8218
TDT3247

58' : 21562+8212
LOC 500

59' : 21521+8348
LOC 499

60' : 21170+8210
LOC 482

60' : 21164+8210
LDS1949

68' : 21514+8154
LOC 496

81' : 21196+8143
AZC 180

83' : 21210+8413
MLR 247

85' : 21235+8417
SKF 397AB

86' : 21446+8420
LDS1960

104' : 21211+8436
MLR 248

108' : 21561+8115
LOC 494

109' : 21540+8112
LDS1962

118' : 21518+8102
KPP1343

124' : 21357+8459
LOC 492

124' : 21465+8053
TDT3151

126' : 21513+8053
MLR 253

140' : 21565+8042
LOC 498

149' : 21433+8523
MLR 252

160' : 21185+8021
STF2801



Selections
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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.

21370+8255 STF 2837 (HD 207146)

 
 
21h 36m 58.67s +82° 55' 16.5" P.A. 269.00 sep 3.2 mag 8.84,9.36 Sp G5
 
 
Coord 2000 21370+8255 Discov num STF2837 Comp Coord arcsec 2000 21 36 58.67 +82 55 16.5
Date first 1832 Date last 2018 Obs 88
Pa first 321 Pa last 268.8 P.A. Now (θ) 268.8°
Sep first 2.2 Sep last 3.202 Sep. Now (ρ) 3.202"
Mag pri 8.84 Mag sec 9.36 delta mag (ΔM) 0.52 Spectral class G5 (yellow)
Pri motion ra +007 Sec motion ra
Pri motion dec -051 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 207146 Constellation Cepheus SAO 3606 Tycho2 4649-00057-1
Gaia DR2 2300220420283692672 HD 207146 GC 30375 ADS 15229
 
 
ORBITAL ELEMENTS
 
 
Period (P)1153.3017y± 590.6734 Periastron (T)1794.7941y± 82.5643 Semi-major axis (a)4.69589a± 1.90688
Eccentricity (e)0.846± 0.20093 Inclination (i)116.269°± 15.188 Longitude of periastron (ω)95.766°± 15.376
Node (Ω)146.809°± 64.776 Notes ReferenceIzm2019
Equinox Last observation2015 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 271.8 3.115
2001 271.7 3.118
2002 271.5 3.122
2003 271.3 3.125
2004 271.2 3.129
2005 271.0 3.132
2006 270.8 3.136
2007 270.7 3.139
2008 270.5 3.142
2009 270.3 3.146
2010 270.2 3.149
2011 270.0 3.152
2012 269.8 3.156
2013 269.7 3.159
2014 269.5 3.162
2015 269.4 3.166
2016 269.2 3.169
2017 269.0 3.172
2018 268.9 3.175
2019 268.7 3.179
2020 268.5 3.182
2021 268.4 3.185
2022 268.2 3.188
2023 268.1 3.191
2024 267.9 3.195
2025 267.8 3.198
2026 267.6 3.201
2027 267.4 3.204
2028 267.3 3.207
2029 267.1 3.210
2030 267.0 3.213


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


 
  


wds21370%2B8255b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21370+8255 STF 2837 (HD 207146) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21370+8255 STF2837 2007 72 271 3.1 8.84 9.36 G5 L 213658.67+825516.5
21370+8255 STF2837 2010 74 270 3.1 8.84 9.36 G5 L 213658.67+825516.5
21370+8255 STF2837 2016 84 269 3.2 8.84 9.36 G5 O 213658.67+825516.5
21370+8255 STF2837 2018 87 270 3.2 8.84 9.36 G5 O 213658.67+825516.5

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

 
 
WDS 21370+8255 STF 2837 (HD 207146) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21370+8255 STF 2837 (HD 207146) : MEASURES
 
 
No records found.

 
 
WDS 21370+8255 (HD 207146) : VIRTUAL EYEPIECE
 
 

21370+8255 STF2837A mag 8.84 Sp G5 21370+8255 STF2837B sep 0.4 P.A. 260.40 mag 9.36 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 21370+8255 (HD 207146) : ALADIN DSS IMAGE @ 21h 36m 58.67s +82° 55' 16.5"
 
 
 
 
WDS 21370+8255 STF 2837 (HD 207146) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21370+8255 STF2837 distance=1' 21354+8300 LDS1956 distance=6' 21322+8316 TDT3014 distance=23' 21239+8317 HDS3049 distance=33' 21176+8231 STF2807 distance=45' 21236+8337 LOC 491 distance=48' 21440+8208 MLR 251 distance=50' 21561+8218 TDT3247 distance=53' 21562+8212 LOC 500 distance=58' 21521+8348 LOC 499 distance=59' 21170+8210 LOC 482 distance=60' 21164+8210 LDS1949 distance=60' 21514+8154 LOC 496 distance=68' 21196+8143 AZC 180 distance=81' 21210+8413 MLR 247 distance=83' 21235+8417 SKF 397AB distance=85' 21446+8420 LDS1960 distance=86' 21211+8436 MLR 248 distance=104' 21561+8115 LOC 494 distance=108' 21540+8112 LDS1962 distance=109' 21518+8102 KPP1343 distance=118' 21357+8459 LOC 492 distance=124' 21465+8053 TDT3151 distance=124' 21513+8053 MLR 253 distance=126' 21565+8042 LOC 498 distance=140' 21433+8523 MLR 252 distance=149' 21185+8021 STF2801 distance=160' 21428+8535 UC 4536 distance=160' 21485+8008 LOC 497 distance=169' 21390+8002 LDS1958 distance=171' 21461+8001 LOC 495 distance=176' 21452+8554 A 775 distance=180' 21415+8555 TDT3110 distance=180' 21443+8559 TDT3127 distance=185' 21223+7945 MLR 246 distance=193' 21249+7938 LOC 489 distance=200' 21458+7937 TOI1893 distance=200' 21529+8627 LDS1964 distance=214' 21536+7922 LDS1961 distance=217' 21207+7916 LDS1950AC distance=222' 21290+7901 TDT2985 distance=236' 21217+7902 UC 4456 distance=237' 21312+8652 STF2858 distance=238' 21285+8700 HDS3057 distance=246' 21394+7839 UC 4520 distance=257' 21278+7830 LOC 487 distance=267' 21271+7822 UC 4469 distance=274' 21202+7804 KPP4234 distance=295' 21288+7756 HU 771 distance=300' 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 21370+8255 STF2837 269 3.2 1
Show 21354+8300 LDS1956 351 62.2 6
Show 21322+8316 TDT3014 217 1.6 23
Show 21239+8317 HDS3049 339 0.3 33
Show 21176+8231 STF2807 310 1.8 45
Show 21236+8337 LOC 491 64 1.1 48
Show 21440+8208 MLR 251 43 1.6 50
Show 21561+8218 TDT3247 352 0.6 53
Show 21562+8212 LOC 500 200 5.2 58
Show 21521+8348 LOC 499 269 10.8 59
Show 21170+8210 LOC 482 75 1.7 60
Show 21164+8210 LDS1949 106 15.4 60
Show 21514+8154 LOC 496 251 5.3 68
Show 21196+8143 AZC 180 6 52.1 81
Show 21210+8413 MLR 247 301 2.1 83
Show 21235+8417 SKF 397 AB 200 3.7 85
Show 21446+8420 LDS1960 358 84.4 86
Show 21211+8436 MLR 248 107 0.5 104
Show 21561+8115 LOC 494 359 26.1 108
Show 21540+8112 LDS1962 167 26.2 109
Show 21518+8102 KPP1343 232 10.1 118
Show 21357+8459 LOC 492 314 1.9 124
Show 21465+8053 TDT3151 301 1.0 124
Show 21513+8053 MLR 253 129 1.6 126
Show 21565+8042 LOC 498 104 1.4 140
Show 21433+8523 MLR 252 66 2.6 149
Show 21185+8021 STF2801 271 2.1 160
Show 21428+8535 UC 4536 33 27.2 160
Show 21485+8008 LOC 497 314 3.3 169
Show 21390+8002 LDS1958 206 8.5 171
Show 21461+8001 LOC 495 81 30.0 176
Show 21452+8554 A 775 205 2.8 180
Show 21415+8555 TDT3110 67 2.6 180
Show 21443+8559 TDT3127 117 0.5 185
Show 21223+7945 MLR 246 47 3.1 193
Show 21249+7938 LOC 489 31 1.5 200
Show 21458+7937 TOI1893 203 6.1 200
Show 21529+8627 LDS1964 63 121.7 214
Show 21536+7922 LDS1961 29 208.9 217
Show 21207+7916 LDS1950 AC 287 5.3 222
Show 21290+7901 TDT2985 212 0.5 236
Show 21217+7902 UC 4456 353 30.2 237
Show 21312+8652 STF2858 157 14.4 238
Show 21285+8700 HDS3057 278 0.4 246
Show 21394+7839 UC 4520 189 30.6 257
Show 21278+7830 LOC 487 256 2.1 267
Show 21271+7822 UC 4469 188 9.1 274
Show 21202+7804 KPP4234 212 3.6 295
Show 21288+7756 HU 771 193 2.6 300

 
 
WDS 21370+8255 : COMPONENTS
 
 
  A
B pa=260.4°
sep=0.40"
 
 
21370+8255 A
 
 
Componente originario normalizzato AB Name HD 207146 Coord arcsec 2000 213658.67+825516.5 Mag 8.84
Spectral class G5 (yellow) PmRA 7.00 PmDE -51.0 SAO 3606
Tycho2 4649-00057-1 HD 207146 GC 30375 DM BD+82 657
Tycho2
Tycho2 4649-00057-1 Pflag RAmdeg 324.24446894 DEmdeg 82.92125841
PmRA 9.0 PmDE -51.6 E RAmdeg 9 E DEmdeg 10
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.10 EpDEm 1990.84
Num 8 Q RAmdeg 1.4 Q DEmdeg 1.1 Q pmRA 1.5
Q pmDE 1.1 BTmag 9.677 E BTmag 0.022 VTmag 8.841
E VTmag 0.015 Prox 31 TYC T HIP
CCDM RAdeg 324.24430167 DEdeg 82.92137750 EpRA 1990 1.77
EpDE 1990 1.70 E RAdeg 8.8 E DEdeg 9.8 Posflg D
Corr 0.0
SAO
SAO 3606 DelFlag RA1950 PmRA1950 -0.0041
DE1950 PmDE1950 -0.042 Vmag 8.7 SpType G5
Double code Source 70 CatNum 30375 DM BD+82 657
DMcomp BDsup HD 207146 M HD 0
GC 30375 RA1950rad 5.67022276 DE1950rad 1.4433054 PmRA2000 -0.0036
PmDE2000 -0.047
CCDM
Ccdm 21370+8255 RComp Comp A Note1
Note2 Discov num DRAs -2.63 DDEs 17.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.2 Sp G5 PmNote *
PmRA -24 PmDE -39 Dm number +82 657 Cat1 BD
Name2 +82 635 Cat2 AGK2/3 HD 207146 M HD
ADS BDS A15229 M ADS BDS N IDS IDS 21418N8228A
HIC
 
 
21370+8255 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 213658.46+825516.4 Mag 9.36 Calc delta mag 0.52
Calc coord yes
CCDM
Ccdm 21370+8255 RComp Comp B Note1
Note2 Discov num STF2837 DRAs DDEs
R dRAs Year 1953 Theta 282 Rho 2.9
Obs 23 Vmag 9.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15229 M ADS BDS N IDS IDS 21418N8228B
HIC