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Current system
21208-4049
HDS 3039
The1 Mic


Nearby doubles
37' : 21186-4116
UC 4437

39' : 21213-4011
WG 270

42' : 21243-4040
CRU9020

44' : 21244-4100
BU 766AB

50' : 21172-4118
RST4079

53' : 21162-4041
CBL 182

54' : 21234-4133
KPP3092

61' : 21241-4002
UC 4465

63' : 21261-4103
RST2177

65' : 21175-4142
LIT 35

71' : 21237-3947
SKF1173

72' : 21178-3945
CRU9019AB

77' : 21144-4025
UC 4416

78' : 21174-4157
NSN 466

82' : 21196-3929
I 1438

100' : 21185-4225
RED 27

102' : 21176-3914
SEE 442

103' : 21292-4125
HJ 5272AB

103' : 21122-4016
CRU9018AB

105' : 21142-3936
WG 267

105' : 21201-4233
KPP1331

105' : 21121-4128
BVD 153

107' : 21212-4235
TDT2915

111' : 21125-4148
I 1436

112' : 21257-3913
SEE 445

120' : 21104-4114
ARU 3



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.

21208-4049 HDS 3039 (The1 Mic)

 
 
21h 20m 45.58s -40° 48' 34.2" P.A. 13.00 sep 0.2 mag 4.93,7.42 Sp A2p dist. 60.46 pc (197.22 l.y.)
 
 
Coord 2000 21208-4049 Discov num HDS3039 Comp Coord arcsec 2000 21 20 45.58 -40 48 34.2
Date first 1991 Date last 2021 Obs 8
Pa first 1 Pa last 13.3 P.A. Now (θ) 6.7°
Sep first 0.1 Sep last 0.176 Sep. Now (ρ) 0.157"
Mag pri 4.93 Mag sec 7.42 delta mag (ΔM) 2.49 Spectral class A2p (white)
Pri motion ra +076 Sec motion ra
Pri motion dec +018 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name The1 Mic Constellation Microscopium SAO 230644 HIP 105382
Tycho2 7983-01200-1 Gaia DR2 6582113664036653824 HD 203006 HR 8151
GC 29854 CD CD-4114475 CP CP-41 9606 Bayer Theta 1 Microscopii
Bayer name The1 Mic FK5 802 Distance 60.46 Distance ly 197.22
Bayer greek θ1 Mic
 
 
ORBITAL ELEMENTS
 
 
Period (P)32.34y Periastron (T)2019.76y Semi-major axis (a)0.265a
Eccentricity (e)0.39 Inclination (i)106.1° Longitude of periastron (ω)146.5°
Node (Ω)200.7° Notes ReferenceTok2020g
Equinox2000 Last observation2019 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 220.9 0.228
2001 217.5 0.256
2002 214.7 0.280
2003 212.4 0.302
2004 210.3 0.319
2005 208.4 0.332
2006 206.6 0.341
2007 205.0 0.345
2008 203.3 0.344
2009 201.6 0.338
2010 199.8 0.326
2011 197.8 0.308
2012 195.5 0.283
2013 192.7 0.251
2014 188.9 0.211
2015 183.2 0.165
2016 172.5 0.112
2017 143.6 0.063
2018 76.0 0.058
2019 41.7 0.103
2020 28.7 0.146
2021 20.8 0.169
2022 14.1 0.171
2023 6.7 0.157
2024 357.2 0.133
2025 343.0 0.106
2026 320.2 0.084
2027 289.1 0.080
2028 261.9 0.095
2029 244.6 0.123
2030 234.1 0.154


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


 
  


wds21208-4049a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21208-4049 HDS 3039 (The1 Mic) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2020g orb - Tokovinin, A. 2020IAUDS.201....1A
Tok2020g Inf. Circ. 201, 1, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 HDS Hipparcos Double Star (from additional DD list)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21208-4049 HDS3039 1991 1 1 0.1 4.93 7.42 A2p 212045.58-404834.2
21208-4049 HDS3039 2014 3 5 0.2 4.93 7.42 A2p 212045.58-404834.2
21208-4049 HDS3039 2018 5 46 0.1 4.93 7.42 A2p 212045.58-404834.2
21208-4049 HDS3039 2019 6 36 0.1 4.93 7.42 A2p 212045.58-404834.2
21208-4049 HDS3039 2020 7 20 0.2 4.93 7.42 A2p O 212045.58-404834.2
21208-4049 HDS3039 2021 8 13 0.2 4.93 7.42 A2p O 212045.58-404834.2

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

 
 
WDS 21208-4049 HDS 3039 (The1 Mic) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21208-4049 HDS 3039 (The1 Mic) : MEASURES
 
 
No records found.

 
 
WDS 21208-4049 (The1 Mic) : VIRTUAL EYEPIECE
 
 

21208-4049 HDS3039A mag 4.93 Sp A2p 21208-4049 HDS3039B sep 0.2 P.A. 10.10 mag 7.42 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 21208-4049 (The1 Mic) : ALADIN DSS IMAGE @ 21h 20m 45.58s -40° 48' 34.2"
 
 
 
 
WDS 21208-4049 HDS 3039 (The1 Mic) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21208-4049 HDS3039 distance=0' 21186-4116 UC 4437 distance=37' 21213-4011 WG 270 distance=39' 21243-4040 CRU9020 distance=42' 21244-4100 BU 766AB distance=44' 21244-4100 BU 766AC distance=44' 21172-4118 RST4079 distance=50' 21162-4041 CBL 182 distance=53' 21234-4133 KPP3092 distance=54' 21241-4002 UC 4465 distance=61' 21261-4103 RST2177 distance=63' 21175-4142 LIT 35 distance=65' 21237-3947 SKF1173 distance=71' 21178-3945 TDT2890Ba,Bb distance=72' 21178-3945 CRU9019AB distance=72' 21178-3945 CRU9019AC distance=72' 21144-4025 UC 4416 distance=77' 21174-4157 NSN 466 distance=78' 21196-3929 I 1438 distance=82' 21185-4225 RED 27 distance=100' 21156-3927 B 521BC distance=100' 21156-3927 HJ 5254A,BC distance=101' 21176-3914 SEE 442 distance=102' 21292-4125 RVA 1BC distance=103' 21292-4125 HJ 5272AB distance=103' 21122-4016 CRU9018AB distance=103' 21122-4016 CRU9018AC distance=103' 21122-4016 CRU9018AD distance=103' 21122-4016 CRU9018AE distance=103' 21122-4016 CRU9018AF distance=103' 21142-3936 WG 267 distance=105' 21201-4233 KPP1331 distance=105' 21121-4128 BVD 153 distance=105' 21212-4235 TDT2915 distance=107' 21125-4148 I 1436 distance=111' 21257-3913 SEE 445 distance=112' 21104-4114 ARU 3 distance=120' 21208-3847 CVN 110AB distance=122' 21103-4014 CRU9017 distance=124' 21107-3959 HDS3018 distance=125' 21270-4233 MLO 6AB distance=126' 21270-4233 TOK 346AC distance=126' 21232-4257 SKF1172 distance=132' 21091-4047 CPO 620AB distance=133' 21163-3845 LDS 737 distance=134' 21090-4058 CRU9016AB distance=134' 21090-4058 CRU9016AC distance=134' 21326-4059 UC 4491 distance=135' 21313-4152 TDT3006 distance=135' 21322-4012 LDS 748 distance=136' 21114-4215 TSN 97 distance=136' 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 21208-4049 HDS3039 13 0.2
Show 21186-4116 UC 4437 295 32.3 37
Show 21213-4011 WG 270 52 4.8 39
Show 21243-4040 CRU9020 52 38.1 42
Show 21244-4100 BU 766 AB 169 0.3 44
Show 21244-4100 BU 766 AC 65 79.1 44
Show 21172-4118 RST4079 21 0.2 50
Show 21162-4041 CBL 182 152 31.3 53
Show 21234-4133 KPP3092 163 3.3 54
Show 21241-4002 UC 4465 50 38.1 61
Show 21261-4103 RST2177 334 2.5 63
Show 21175-4142 LIT 35 248 10.5 65
Show 21237-3947 SKF1173 153 94.0 71
Show 21178-3945 TDT2890 Ba,Bb 252 0.5 72
Show 21178-3945 CRU9019 AB 230 117.1 72
Show 21178-3945 CRU9019 AC 62 62.8 72
Show 21144-4025 UC 4416 140 12.5 77
Show 21174-4157 NSN 466 4 45.0 78
Show 21196-3929 I 1438 57 3.8 82
Show 21185-4225 RED 27 199 7.8 100
Show 21156-3927 B 521 BC 50 0.5 100
Show 21156-3927 HJ 5254 A,BC 191 57.8 101
Show 21176-3914 SEE 442 40 4.9 102
Show 21292-4125 RVA 1 BC 331 2.7 103
Show 21292-4125 HJ 5272 AB 304 21.9 103
Show 21122-4016 CRU9018 AB 212 122.8 103
Show 21122-4016 CRU9018 AC 237 146.0 103
Show 21122-4016 CRU9018 AD 250 180.1 103
Show 21122-4016 CRU9018 AE 268 219.6 103
Show 21122-4016 CRU9018 AF 326 122.7 103
Show 21142-3936 WG 267 318 10.0 105
Show 21201-4233 KPP1331 324 10.1 105
Show 21121-4128 BVD 153 132 44.1 105
Show 21212-4235 TDT2915 61 0.4 107
Show 21125-4148 I 1436 276 0.5 111
Show 21257-3913 SEE 445 216 2.3 112
Show 21104-4114 ARU 3 142 0.2 120
Show 21208-3847 CVN 110 AB 25 7.0 122
Show 21103-4014 CRU9017 303 25.0 124
Show 21107-3959 HDS3018 189 0.8 125
Show 21270-4233 MLO 6 AB 151 2.8 126
Show 21270-4233 TOK 346 AC 75 295.3 126
Show 21232-4257 SKF1172 186 9.3 132
Show 21091-4047 CPO 620 AB 347 20.1 133
Show 21163-3845 LDS 737 157 7.2 134
Show 21090-4058 CRU9016 AB 82 117.7 134
Show 21090-4058 CRU9016 AC 24 137.2 134
Show 21326-4059 UC 4491 216 45.3 135
Show 21313-4152 TDT3006 194 2.4 135
Show 21322-4012 LDS 748 156 27.3 136
Show 21114-4215 TSN 97 227 56.4 136

 
 
WDS 21208-4049 : COMPONENTS
 
 
  A
B pa=10.1°
sep=0.17"
 
 
21208-4049 A
 
 
Componente originario normalizzato AB Name The1 Mic Coord arcsec 2000 212045.58-404834.2 Mag 4.93
Spectral class A2p (white) PmRA 76.00 PmDE 18.0 SAO 230644
HIP 105382 Tycho2 7983-01200-1 HD 203006 HR 8151
GC 29854 CD CD-4114475 CP CP-41 9606 Bayer Theta 1 Microscopii
Bayer name The1 Mic FK5 802
Tycho2
Tycho2 7983-01200-1 Pflag RAmdeg 320.19015481 DEmdeg -40.80950379
PmRA 69.1 PmDE 0.6 E RAmdeg 3 E DEmdeg 3
E pmRA 0.7 E pmDE 0.7 EpRAm 1991.47 EpDEm 1991.22
Num 17 Q RAmdeg 2.0 Q DEmdeg 1.3 Q pmRA 2.0
Q pmDE 1.3 BTmag 4.852 E BTmag 0.014 VTmag 4.806
E VTmag 0.009 Prox 999 TYC T HIP 105382
CCDM AB RAdeg 320.18994639 DEdeg -40.80950528 EpRA 1990 1.77
EpDE 1990 1.48 E RAdeg 3.2 E DEdeg 3.4 Posflg P
Corr -0.4
SAO
SAO 230644 DelFlag RA1950 PmRA1950 0.006
DE1950 PmDE1950 -0.003 Vmag 4.9 SpType A2p
Double code Source 74 CatNum 802 DM CD-4114475
DMcomp BDsup HD 203006 M HD 0
GC 29854 RA1950rad 5.57444735 DE1950rad -0.7159726 PmRA2000 0.0061
PmDE2000 -0.006
Hipparcos
Catalog H HIP 105382 Proxy H RAhms 21 20 45.58
DEdms -40 48 34.2 Vmag 4.8 VarFlag 1 R Vmag H
RAdeg 320.19 DEdeg -40.8095 AstroRef * Plx 17.49
CCDM 21208-4049 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual B M HIP AB
Theta 1 Rho 0.142 HD 203006 BD
CD CD-4114475 CP CP-41 9606 Dm number -4114475 VIred 0.07
SpType A2p R SpType Coord arcsec 2000 212045.58-404834.2
Hipparcos 2
HIP 105382 Sn 55 So 3 Nc 2
RArad 5.588368537 DErad -0.712260284 Plx 16.54 PmRA 71.92
PmDE 20.38 E RArad 0.99 E DErad 0.66 E Plx 1.19
E pmRA 1.31 E pmDE 0.65 Hpmag 4.8277 E Hpmag 0.0013
SHp 0.008 VA 1 BV 0.029 E BV 0.026
VI 0.07
CCDM
Ccdm 21208-4049 RComp Comp A Note1
Note2 Discov num DRAs -2.36 DDEs 25.9
R dRAs 82 Year Theta Rho
Obs 2 Vmag 4.9 Sp A2 PmNote *
PmRA 76 PmDE 18 Dm number -4114475 Cat1 CD
Name2 230644 Cat2 SAO HD 203006 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 105382
 
 
21208-4049 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 212045.58-404834.0 Mag 7.42 Calc delta mag 2.49
Calc coord yes
CCDM
Ccdm 21208-4049 RComp Comp B Note1
Note2 Discov num HDS DRAs -2.36 DDEs 26.1
R dRAs 82 Year 1991 Theta 1 Rho 0.1
Obs 1 Vmag 7.4 Sp PmNote *
PmRA 76 PmDE 18 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 105382