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Doubles in session


Current system
06255+2320
MCA 26
HD 44927


Nearby doubles
7' : 06255+2327
BAG 5AB

13' : 06258+2332
POU1325

18' : 06268+2315
POU1329

19' : 06258+2339
POU1323

20' : 06254+2339
POU1322

21' : 06254+2340
POU1321

22' : 06268+2308
LDS 895

27' : 06237+2328
POU1293

27' : 06267+2258
OCC1058

28' : 06274+2330
POU1335

28' : 06241+2339
POU1301

28' : 06236+2328
POU1290

32' : 06234+2312
POU1287

32' : 06270+2344
OCC9122

33' : 06279+2327
DAM1155

33' : 06234+2332
POU1285

34' : 06235+2303
J 976

34' : 06252+2353
POU1316AB

35' : 06281+2320
POU1340

36' : 06280+2332
POU1338

37' : 06268+2352
POU1330

38' : 06283+2325
POU1343

39' : 06251+2358
POU1314

41' : 06264+2358
POU1327

42' : 06228+2304
POU1272

42' : 06245+2359
POU1307



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.

06255+2320 MCA 26 (HD 44927)

 
 
06h 25m 32.94s +23° 19' 38.0" P.A. 165.00 sep 0.0 mag 6.06,6.70 Sp A2Vn dist. 150.6 pc (491.26 l.y.)
 
 
Coord 2000 06255+2320 Discov num MCA  26 Comp Coord arcsec 2000 06 25 32.94 +23 19 38.0
Date first 1976 Date last 2001 Obs 19
Pa first 161 Pa last 164.9 P.A. Now (θ) 6.4°
Sep first 0.1 Sep last 0.037 Sep. Now (ρ) 0.017"
Mag pri 6.06 Mag sec 6.70 delta mag (ΔM) 0.64 Spectral class A2Vn (white)
Pri motion ra -009 Sec motion ra
Pri motion dec -018 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 44927 Constellation Gemini SAO 78349 HIP 30570
Tycho2 1879-00374-1 Gaia DR2 3377336026995981312 HD 44927 HR 2304
GC 8290 BD BD+23 1347 Distance 150.6 Distance ly 491.26
 
 
ORBITAL ELEMENTS
 
 
Period (P)42.841y Periastron (T)2020.594y Semi-major axis (a)0.087a
Eccentricity (e)0.074 Inclination (i)82.5° Longitude of periastron (ω)236.8°
Node (Ω)149.3° Notesn ReferenceDoc2018c
Equinox2000 Last observation2013 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 163.6 0.044
2001 169.1 0.034
2002 179.6 0.023
2003 204.3 0.015
2004 255.8 0.013
2005 292.1 0.019
2006 306.7 0.029
2007 313.8 0.040
2008 318.0 0.050
2009 320.8 0.059
2010 322.9 0.067
2011 324.6 0.073
2012 326.0 0.078
2013 327.3 0.082
2014 328.5 0.083
2015 329.7 0.083
2016 331.0 0.080
2017 332.3 0.076
2018 333.9 0.069
2019 335.8 0.061
2020 338.5 0.051
2021 342.4 0.040
2022 349.6 0.029
2023 6.4 0.017
2024 58.0 0.011
2025 110.8 0.017
2026 128.2 0.028
2027 135.4 0.040
2028 139.4 0.051
2029 142.0 0.062
2030 143.9 0.070


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


 
  


wds06255%2B2320b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 06255+2320 MCA 26 (HD 44927) : NOTES
 
 
discov_num notes refcode
MCA 26 An occultation and interferometric binary.
First detected as an occultation binary by Africano. Afr1975
1979.7709: This negative result was incorrectly attributed to ADS 5103
in McAlister & Hendry (1981). McA1981b
 
 
REFERENCES
 
 
refcode metd author reference
Afr1975 O j Africano, J.L., Cobb, C.L., Dunham, D.W., Evans, D.S., Fekel, F.C. & Vogt, S.S. 1975AJ.....80..689A
Afr1975 AJ 80, 689, 1975
Doc2018c orb - Docobo, J.A., Campo, P. & Gomez, J. 2018IAUDS.194S...1D
Doc2018c Inf. Circ. 194, 1, 2018
McA1981b Sc j McAlister, H.A. & Hendry, E.M. 1981PASP...93..221M
McA1981b PASP 93, 221, 1981
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
06255+2320 MCA 26 1996 17 159 0.1 6.06 6.70 A2Vn NOD 062532.94+231938.0
06255+2320 MCA 26 2001 18 165 0.0 6.06 6.70 A2Vn NOD 062532.94+231938.0

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

 
 
WDS 06255+2320 MCA 26 (HD 44927) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 06255+2320 MCA 26 (HD 44927) : MEASURES
 
 
No records found.

 
 
WDS 06255+2320 (HD 44927) : VIRTUAL EYEPIECE
 
 

06255+2320 MCA 26A mag 6.06 Sp A2Vn 06255+2320 MCA 26B mag 6.7 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 06255+2320 (HD 44927) : ALADIN DSS IMAGE @ 06h 25m 32.94s +23° 19' 38.0"
 
 
 
 
WDS 06255+2320 MCA 26 (HD 44927) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

06255+2320 MCA 26 distance=0' 06255+2327 BAG 5AB distance=7' 06255+2327 OCC9120AC distance=7' 06258+2332 POU1325 distance=13' 06268+2315 POU1329 distance=18' 06258+2339 POU1323 distance=19' 06254+2339 POU1322 distance=20' 06254+2340 POU1321 distance=21' 06268+2308 LDS 895 distance=22' 06237+2328 POU1293 distance=27' 06267+2258 OCC1058 distance=27' 06274+2330 POU1335 distance=28' 06241+2339 POU1301 distance=28' 06236+2328 POU1290 distance=28' 06234+2312 POU1287 distance=32' 06270+2344 OCC9122 distance=32' 06279+2327 DAM1155 distance=33' 06234+2332 POU1285 distance=33' 06235+2303 J 976 distance=34' 06252+2353 POU1316AB distance=34' 06252+2353 POU1317AC distance=34' 06281+2320 POU1340 distance=35' 06280+2332 POU1338 distance=36' 06268+2352 POU1330 distance=37' 06283+2325 POU1343 distance=38' 06251+2358 POU1314 distance=39' 06264+2358 POU1327 distance=41' 06228+2304 POU1272 distance=42' 06245+2359 POU1307 distance=42' 06285+2307 POU1345 distance=43' 06277+2249 J 1092AB distance=43' 06277+2249 BTG 10AC distance=43' 06247+2401 POU1310 distance=43' 06245+2401 POU1303 distance=44' 06253+2404 POU1318AB distance=45' 06253+2404 POU1319AC distance=45' 06288+2312 POU1347 distance=46' 06232+2351 POU1281 distance=46' 06288+2325 OCC1059 distance=46' 06289+2322 POU1350 distance=47' 06286+2341 AZC 49 distance=47' 06239+2401 POU1298 distance=48' 06286+2342 POU1346 distance=48' 06246+2407 POU1308 distance=50' 06291+2316 POU1354 distance=50' 06291+2322 POU1355 distance=50' 06237+2404 POU1295 distance=51' 06229+2355 POU1276 distance=52' 06220+2339 POU1261 distance=53' 06256+2227 STT 139 distance=53' 06258+2413 POU1324 distance=53' 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 06255+2320 MCA 26 165 0.0
Show 06255+2327 BAG 5 AB 167 0.1 7
Show 06255+2327 OCC9120 AC -1 0.2 7
Show 06258+2332 POU1325 314 14.8 13
Show 06268+2315 POU1329 248 17.0 18
Show 06258+2339 POU1323 83 11.4 19
Show 06254+2339 POU1322 29 12.5 20
Show 06254+2340 POU1321 160 14.8 21
Show 06268+2308 LDS 895 174 22.4 22
Show 06237+2328 POU1293 308 12.5 27
Show 06267+2258 OCC1058 -1 0.2 27
Show 06274+2330 POU1335 89 11.4 28
Show 06241+2339 POU1301 105 14.0 28
Show 06236+2328 POU1290 91 11.4 28
Show 06234+2312 POU1287 203 15.6 32
Show 06270+2344 OCC9122 -1 -1.0 32
Show 06279+2327 DAM1155 104 5.9 33
Show 06234+2332 POU1285 121 24.3 33
Show 06235+2303 J 976 230 3.0 34
Show 06252+2353 POU1316 AB 179 14.9 34
Show 06252+2353 POU1317 AC 187 22.3 34
Show 06281+2320 POU1340 12 16.3 35
Show 06280+2332 POU1338 149 18.7 36
Show 06268+2352 POU1330 314 10.9 37
Show 06283+2325 POU1343 167 7.9 38
Show 06251+2358 POU1314 355 15.7 39
Show 06264+2358 POU1327 70 6.9 41
Show 06228+2304 POU1272 323 7.2 42
Show 06245+2359 POU1307 71 8.8 42
Show 06285+2307 POU1345 181 16.6 43
Show 06277+2249 J 1092 AB 226 6.8 43
Show 06277+2249 BTG 10 AC 311 35.2 43
Show 06247+2401 POU1310 62 16.4 43
Show 06245+2401 POU1303 342 10.2 44
Show 06253+2404 POU1318 AB 303 11.8 45
Show 06253+2404 POU1319 AC 114 14.6 45
Show 06288+2312 POU1347 80 14.7 46
Show 06232+2351 POU1281 314 8.0 46
Show 06288+2325 OCC1059 -1 0.1 46
Show 06289+2322 POU1350 157 15.8 47
Show 06286+2341 AZC 49 161 28.6 47
Show 06239+2401 POU1298 284 8.0 48
Show 06286+2342 POU1346 119 11.7 48
Show 06246+2407 POU1308 195 8.8 50
Show 06291+2316 POU1354 4.1 50
Show 06291+2322 POU1355 142 8.9 50
Show 06237+2404 POU1295 350 8.3 51
Show 06229+2355 POU1276 262 6.7 52
Show 06220+2339 POU1261 66 5.3 53
Show 06256+2227 STT 139 257 0.8 53
Show 06258+2413 POU1324 130 13.5 53

 
 
WDS 06255+2320 : COMPONENTS
 
 
  A
B pa=166.1°
sep=0.04"
 
 
06255+2320 A
 
 
Componente originario normalizzato AB Name HD 44927 Coord arcsec 2000 062532.94+231938.0 Mag 6.06
Spectral class A2Vn (white) PmRA -9.00 PmDE -18.0 SAO 78349
HIP 30570 Tycho2 1879-00374-1 HD 44927 HR 2304
GC 8290 BD BD+23 1347
Tycho2
Tycho2 1879-00374-1 Pflag RAmdeg 96.38724521 DEmdeg 23.32716833
PmRA -5.2 PmDE -17.0 E RAmdeg 3 E DEmdeg 4
E pmRA 0.9 E pmDE 0.8 EpRAm 1991.71 EpDEm 1991.54
Num 17 Q RAmdeg 0.3 Q DEmdeg 0.5 Q pmRA 0.4
Q pmDE 0.6 BTmag 6.080 E BTmag 0.014 VTmag 6.040
E VTmag 0.010 Prox 999 TYC T HIP 30570
CCDM RAdeg 96.38725778 DEdeg 23.32720694 EpRA 1990 1.89
EpDE 1990 1.87 E RAdeg 3.4 E DEdeg 4.0 Posflg
Corr 0.3
SAO
SAO 78349 DelFlag RA1950 PmRA1950 -0.0006
DE1950 PmDE1950 -0.024 Vmag 6 SpType A0
Double code Source 70 CatNum 8290 DM BD+23 1347
DMcomp BDsup HD 44927 M HD 0
GC 8290 RA1950rad 1.66901079 DE1950rad 0.40764648 PmRA2000 -0.0007
PmDE2000 -0.023
Hipparcos
Catalog H HIP 30570 Proxy RAhms 06 25 32.94
DEdms +23 19 38.0 Vmag 6.05 VarFlag R Vmag H
RAdeg 96.3873 DEdeg 23.3272 AstroRef Plx 5.64
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 44927 BD BD+23 1347
CD CP Dm number +23 1347 VIred 0.03
SpType A2Vn R SpType Coord arcsec 2000 062532.94+231938.0
Hipparcos 2
HIP 30570 Sn 5 So 0 Nc 1
RArad 1.6822750446 DErad 0.4071365968 Plx 6.64 PmRA -5.45
PmDE -15.91 E RArad 0.39 E DErad 0.33 E Plx 0.55
E pmRA 0.54 E pmDE 0.34 Hpmag 6.065 E Hpmag 0.0006
SHp 0.004 VA 0 BV 0.02 E BV 0.005
VI 0.04
CCDM
Ccdm 06255+2320 RComp Comp A Note1
Note2 Discov num DRAs 2.97 DDEs -22.4
R dRAs 81 Year Theta Rho
Obs 2 Vmag 6.1 Sp A2 PmNote @
PmRA -3 PmDE -18 Dm number +23 1347 Cat1 BD
Name2 +23 665 Cat2 AGK2/3 HD 44927 M HD
ADS BDS M ADS BDS N IDS IDS 06195N2323A
HIC 30570
 
 
06255+2320 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 062532.94+231938.0 Mag 6.7 Calc delta mag 0.64
Calc coord yes
CCDM
Ccdm 06255+2320 RComp Comp B Note1
Note2 Discov num MAL 26 DRAs DDEs
R dRAs Year 1976 Theta 160 Rho 0.1
Obs 10 Vmag Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 06195N2323B
HIC 30570