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Current system
07121-2024
DON 168
HD 55446


Nearby doubles
11' : 07114-2018
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TDS4594

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TDS4530

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HDO 101AB

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ARA 901

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HEI 916

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ARA 903

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GWP 877

42' : 07100-2054
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HDS 994



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

07121-2024 DON 168 (HD 55446)

 
 
07h 12m 05.03s -20° 24' 14.8" P.A. 192.00 sep 0.4 mag 9.80,10.30 Sp B9.5IV
 
 
Coord 2000 07121-2024 Discov num DON 168 Comp Coord arcsec 2000 07 12 05.03 -20 24 14.8
Date first 1932 Date last 1963 Obs 4
Pa first 196 Pa last 192.4 P.A. Now (θ) 192.4°
Sep first 0.4 Sep last 0.4 Sep. Now (ρ) 0.4"
Mag pri 9.80 Mag sec 10.30 delta mag (ΔM) 0.5 Spectral class B9.5IV (blue-white)
Pri motion ra -004 Sec motion ra
Pri motion dec +010 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 55446 Constellation Canis Major SAO 173182 Tycho2 5973-00027-1
Gaia DR2 2930741135674344192 HD 55446
 
 
WDS 07121-2024 DON 168 (HD 55446) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Don1937 Ma j Donner, H.F. 1937MmRAS..65...51R
Don1937 MemRAS 65, 51, 1937
Don1955 Ma - Donner, H.F. 1955POMic..11....1R
Don1955 Pub. Univ. Michigan Obs. 11, 1, 1955
Don1964 Ma j Donner, H.F. 1964POMic...9...73R
Don1964 Pub. Univ. Michigan Obs. 9, 73, 1964
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
07121-2024 DON 168 1963 4 192 0.4 9.80 10.30 B9.5IV 071205.03-202414.8

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

 
 
WDS 07121-2024 DON 168 (HD 55446) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 07121-2024 DON 168 (HD 55446) : MEASURES
 
 
No records found.

 
 
WDS 07121-2024 (HD 55446) : VIRTUAL EYEPIECE
 
 

07121-2024 DON 168A mag 9.8 Sp B9.5IV 07121-2024 DON 168B sep 0.4 P.A. 191.60 mag 10.3 virtual eyepiece
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Radius:
Components only
 
 
WDS 07121-2024 (HD 55446) : ALADIN DSS IMAGE @ 07h 12m 05.03s -20° 24' 14.8"
 
 
 
 
WDS 07121-2024 DON 168 (HD 55446) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

07121-2024 DON 168 distance=0' 07114-2018 ARA 899 distance=11' 07130-2042 BRT 312 distance=22' 07107-2004 ARA 566 distance=28' 07133-2001 FOX 12 distance=29' 07137-2005 FOX9001 distance=29' 07141-2034 TDS4613 distance=31' 07129-1953 HLD 85 distance=33' 07132-1955 TDS4594 distance=34' 07097-2032 TDS4530 distance=35' 07099-2040 TDS4532 distance=35' 07098-2007 BRT 309 distance=36' 07113-2100 BRT 311 distance=38' 07095-2012 HDO 101AB distance=39' 07148-2026 ARA 902 distance=39' 07145-2045 ARA 901 distance=40' 07106-1950 HEI 916 distance=41' 07149-2021 ARA 903 distance=42' 07116-1944 GWP 877 distance=42' 07100-2054 ARA 896 distance=42' 07095-2012 HDO 100CD distance=43' 07145-1959 B 1967 distance=43' 07101-1952 TDS4536 distance=43' 07119-1941 TDS4574AB distance=44' 07119-1941 DAM1368AC distance=44' 07112-1942 TVB 156 distance=45' 07109-2107 BRT 310 distance=46' 07087-2027 ARA 892 distance=47' 07093-2051 HDS 994 distance=47' 07122-1937 B 2622 distance=48' 07102-1945 HJ 3933 distance=48' 07131-1938 TDS4592 distance=49' 07085-2010 HDO 98 distance=52' 07100-2107 ARA 895 distance=52' 07153-1957 TDS 345 distance=53' 07114-2116 ARA1319 distance=53' 07148-2101 HO 344 distance=54' 07144-2106 HDS1005 distance=54' 07090-2056 ARA 893 distance=54' 07097-1941 TDS4529 distance=55' 07080-2021 DON 163 distance=57' 07130-2121 ARA1321 distance=59' 07084-2052 I 772 distance=59' 07163-2025 TDS4654 distance=60' 07136-2121 B 2623 distance=61' 07163-2038 ARA 904 distance=61' 07082-1952 TDS4509 distance=64' 07086-2107 ARA 891 distance=65' 07167-2010 ARA 571 distance=67' 07100-2125 ARA1315 distance=68' 07122-1916 HDS1000 distance=69' 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 07121-2024 DON 168 192 0.4
Show 07114-2018 ARA 899 82 9.6 11
Show 07130-2042 BRT 312 177 2.7 22
Show 07107-2004 ARA 566 233 10.2 28
Show 07133-2001 FOX 12 237 5.4 29
Show 07137-2005 FOX9001 283 5.0 29
Show 07141-2034 TDS4613 235 0.5 31
Show 07129-1953 HLD 85 200 2.6 33
Show 07132-1955 TDS4594 226 2.2 34
Show 07097-2032 TDS4530 302 1.7 35
Show 07099-2040 TDS4532 190 1.4 35
Show 07098-2007 BRT 309 84 4.3 36
Show 07113-2100 BRT 311 326 3.7 38
Show 07095-2012 HDO 101 AB 199 12.1 39
Show 07148-2026 ARA 902 306 8.4 39
Show 07145-2045 ARA 901 252 14.1 40
Show 07106-1950 HEI 916 157 6.8 41
Show 07149-2021 ARA 903 238 11.1 42
Show 07116-1944 GWP 877 93 301.1 42
Show 07100-2054 ARA 896 88 12.2 42
Show 07095-2012 HDO 100 CD 180 4.0 43
Show 07145-1959 B 1967 150 3.5 43
Show 07101-1952 TDS4536 234 0.9 43
Show 07119-1941 TDS4574 AB 314 0.6 44
Show 07119-1941 DAM1368 AC 211 23.0 44
Show 07112-1942 TVB 156 8 2.1 45
Show 07109-2107 BRT 310 174 2.8 46
Show 07087-2027 ARA 892 250 10.5 47
Show 07093-2051 HDS 994 93 0.2 47
Show 07122-1937 B 2622 80 9.1 48
Show 07102-1945 HJ 3933 149 14.0 48
Show 07131-1938 TDS4592 217 0.4 49
Show 07085-2010 HDO 98 294 11.5 52
Show 07100-2107 ARA 895 90 10.3 52
Show 07153-1957 TDS 345 146 0.8 53
Show 07114-2116 ARA1319 164 6.5 53
Show 07148-2101 HO 344 6 1.5 54
Show 07144-2106 HDS1005 133 0.3 54
Show 07090-2056 ARA 893 121 13.6 54
Show 07097-1941 TDS4529 114 1.1 55
Show 07080-2021 DON 163 350 2.6 57
Show 07130-2121 ARA1321 338 8.7 59
Show 07084-2052 I 772 327 15.2 59
Show 07163-2025 TDS4654 53 1.7 60
Show 07136-2121 B 2623 65 7.5 61
Show 07163-2038 ARA 904 112 5.2 61
Show 07082-1952 TDS4509 155 3.3 64
Show 07086-2107 ARA 891 208 14.8 65
Show 07167-2010 ARA 571 350 11.9 67
Show 07100-2125 ARA1315 251 4.4 68
Show 07122-1916 HDS1000 83 0.0 69

 
 
WDS 07121-2024 : COMPONENTS
 
 
  A
B pa=191.6°
sep=0.40"
 
 
07121-2024 A
 
 
Componente originario normalizzato AB Name HD 55446 Coord arcsec 2000 071205.03-202414.8 Mag 9.8
Spectral class B9.5IV (blue-white) PmRA -4.00 PmDE 10.0 SAO 173182
Tycho2 5973-00027-1 HD 55446 DM BD-20 1770
Tycho2
Tycho2 5973-00027-1 Pflag RAmdeg 108.02099159 DEmdeg -20.40412797
PmRA -7.0 PmDE 2.7 E RAmdeg 8 E DEmdeg 8
E pmRA 1.6 E pmDE 1.4 EpRAm 1991.16 EpDEm 1990.73
Num 8 Q RAmdeg 1.2 Q DEmdeg 0.9 Q pmRA 1.2
Q pmDE 0.9 BTmag 9.306 E BTmag 0.017 VTmag 9.271
E VTmag 0.016 Prox 860 TYC T HIP
CCDM RAdeg 108.02100861 DEdeg -20.40413444 EpRA 1990 1.75
EpDE 1990 1.69 E RAdeg 8.4 E DEdeg 7.7 Posflg
Corr 0.2
SAO
SAO 173182 DelFlag RA1950 PmRA1950 0.0007
DE1950 PmDE1950 0.013 Vmag 9 SpType A2
Double code Source 23 CatNum 2784 DM BD-20 1770
DMcomp BDsup HD 55446 M HD 0
GC RA1950rad 1.87586194 DE1950rad -0.35463782 PmRA2000 0.0011
PmDE2000 0.016
CCDM
Ccdm 07121-2024 RComp Comp A Note1
Note2 Discov num DRAs -0.91 DDEs -14.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.5 Sp A2 PmNote *
PmRA 10 PmDE 13 Dm number -20 1770 Cat1 BD
Name2 173182 Cat2 SAO HD 55446 M HD
ADS BDS M ADS BDS N IDS IDS 07077S2014A
HIC
 
 
07121-2024 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 071205.02-202415.2 Mag 10.3 Calc delta mag 0.5
Calc coord yes
CCDM
Ccdm 07121-2024 RComp Comp B Note1
Note2 Discov num DON 168 DRAs DDEs
R dRAs Year 1932 Theta 195 Rho 0.4
Obs 3 Vmag 10.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 07077S2014B
HIC