10000+2433 CHR 145 (DH Leo)

 
 
10h 00m 01.70s +24° 33' 09.9" P.A. 158.00 sep 0.1 mag 8.12,10.43 Sp K0V dist. 31.69 pc (103.37 l.y.)
 
 
Coord 2000 10000+2433 Discov num CHR 145 Comp Coord arcsec 2000 10 00 01.70 +24 33 09.9
Date first 1989 Date last 2021 Obs 25
Pa first 38 Pa last 157.6 P.A. Now (θ) 157.6°
Sep first 0.2 Sep last 0.121 Sep. Now (ρ) 0.121"
Mag pri 8.12 Mag sec 10.43 delta mag (ΔM) 2.31 Spectral class K0V (yellow-orange)
Pri motion ra -236 Sec motion ra
Pri motion dec -032 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name DH Leo Constellation Leo SAO 81134 HIP 49018
Tycho2 1961-01385-1 Gaia DR2 642660938662899456 HD 86590 GC 13748
GL NN 3580 BD BD+25 2191 Distance 31.69 Distance ly 103.37
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.13y Periastron (T)2003.21y Semi-major axis (a)0.437a
Eccentricity (e)0.748 Inclination (i)96.3° Longitude of periastron (ω)271.6°
Node (Ω)197.5° Notesn ReferenceHrt2012a
Equinox2000 Last observation2011 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 20.7 0.267
2001 18.9 0.229
2002 15.9 0.159
2003 356.6 0.033
2004 201.2 0.118
2005 196.8 0.204
2006 194.6 0.248
2007 192.9 0.271
2008 191.4 0.281
2009 190.0 0.283
2010 188.6 0.280
2011 187.1 0.272
2012 185.5 0.262
2013 183.8 0.249
2014 181.8 0.234
2015 179.6 0.218
2016 177.0 0.201
2017 173.9 0.183
2018 170.2 0.165
2019 165.5 0.147
2020 159.5 0.130
2021 151.8 0.113
2022 141.7 0.100
2023 128.8 0.089
2024 113.5 0.084
2025 97.5 0.085
2026 82.8 0.092
2027 70.9 0.104
2028 61.6 0.118
2029 54.5 0.135
2030 49.0 0.153


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



 
 


wds10000%2B2433a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 10000+2433 CHR 145 (DH Leo) : NOTES
 
 
discov_num notes refcode
CHR 145 The primary is DH Leo, a RS CVn system, and spectroscopic binary with
a period of 1.07d (Barden, AJ 89, 683, 1984). Barden observed three K
stars in his spectra of this system. Fekel (1989, private comm.) has
observed the third component of this system and finds no velocity
changes in excess of +/- 2 km/sec from 12 spectra obtained since 1984.
This new speckle component is thought to be this third spectroscopic
component. McA1990
 
 
REFERENCES
 
 
refcode metd author reference
Hrt2012a orb - Hartkopf, W.I., Tokovinin, A., & Mason, B.D. 2012AJ....143...42H
Hrt2012a +lin AJ 143, 42, 2012
McA1990 Sc j McAlister, H.A., Hartkopf, & Franz, O.G. 1990AJ.....99..965M
McA1990 AJ 99, 965, 1990
 
 
DISCOVERER
 
 
idgroup discov author
1 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10000+2433 CHR 145 2004 13 197 0.2 8.12 10.43 K0V N D 100001.86+243310.2
10000+2433 CHR 145 2009 14 10 0.3 8.12 10.43 K0V N D 100001.86+243310.2
10000+2433 CHR 145 2011 17 188 0.3 8.12 10.43 K0V NOD 100001.86+243310.2
10000+2433 CHR 145 2014 18 183 0.2 8.12 10.43 K0V NO 100001.86+243310.2
10000+2433 CHR 145 2018 21 172 0.2 8.12 10.43 K0V NO 100001.70+243309.9
10000+2433 CHR 145 2019 22 169 0.2 8.12 10.43 K0V NO 100001.70+243309.9
10000+2433 CHR 145 2021 25 158 0.1 8.12 10.43 K0V NO 100001.70+243309.9

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

 
 
WDS 10000+2433 CHR 145 (DH Leo) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 10000+2433 CHR 145 (DH Leo) : MEASURES
 
 
No records found.

 
 
WDS 10000+2433 (DH Leo) : VIRTUAL EYEPIECE
 
 

10000+2433 CHR 145A mag 8.12 Sp K0V 10000+2433 CHR 145B sep 0.1 P.A. 159.40 mag 10.43 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.

Radius:
Components only
 
 
WDS 10000+2433 (DH Leo) : ALADIN DSS IMAGE @ 10h 00m 01.70s +24° 33' 09.9"
 
 
 
 
WDS 10000+2433 CHR 145 (DH Leo) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


10000+2433  CHR 145 distance=0' 09595+2415  POU3066 distance=19' 09599+2408  POU3067 distance=25' 09582+2412  UC 1855 distance=33' 10012+2502  SHN  19 distance=34' 10026+2420  POU3070 distance=37' 10017+2506  DAM1928 distance=40' 10014+2352  FMR  89 distance=45' 10022+2359  POU3069 distance=46' 09561+2433  TDS6906 distance=54' 09567+2503  STF1397 distance=54' 09578+2526  SLW 411 distance=62' 09551+2438  TOK 272 distance=68' 09553+2458  LAS  13 distance=70' 10040+2521  COU 589 distance=73' 09547+2428  NSN  36 distance=74' 09577+2540  COU 938 distance=75' 09559+2344  POU3063 distance=75' 09543+2418  POU3062 distance=81' 09588+2604  GRV 806 distance=93' 10049+2543  LDS3954 distance=96' 09589+2255  POU3065 distance=100' 09554+2559  UC 1844 distance=107' 10023+2621  COU1125 distance=113' 10085+2419  LSC 125 distance=117' 10036+2619  LDS3951 distance=117' 10011+2237  POU3068 distance=117' 10038+2246  POU3071 distance=119' 09514+2456  CBL 291 distance=120' 09574+2237  SLW 410 distance=122' 09510+2432  CVR1247 distance=123' 09513+2507  TDS6856 distance=125' 10066+2602  TDS 569 distance=126' 10059+2611  KPP3224 distance=127' 09542+2612  COU1124 distance=127' 09508+2410  CVR  93 distance=129' 09568+2232  POU3064 distance=131' 09571+2639  CBL 295 distance=133' 10092+2501  FOX 165 distance=133' 10091+2531  A  1988 distance=136' 09537+2239  POU3061 distance=143' 10077+2255  POU3073 distance=147' 10059+2241  POU3072 distance=147' 09580+2208  UC 1853 distance=148' 10106+2353  A  1989 distance=151' 09517+2617  COU1122 distance=153' 09488+2424  POU3059 distance=154' 09489+2509  CVR1244 distance=156' 09585+2159  CHE 143 distance=156' 10092+2259  CVR1268 distance=157' 09530+2638  COU1123 distance=157' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 10000+2433 CHR 145 158 0.1
Show 09595+2415 POU3066 59 11.2 19
Show 09599+2408 POU3067 69 6.5 25
Show 09582+2412 UC 1855 184 9.6 33
Show 10012+2502 SHN 19 275 0.3 34
Show 10026+2420 POU3070 263 9.9 37
Show 10017+2506 DAM1928 230 3.1 40
Show 10014+2352 FMR 89 172 6.2 45
Show 10022+2359 POU3069 343 3.5 46
Show 09561+2433 TDS6906 68 1.0 54
Show 09567+2503 STF1397 96 1.1 54
Show 09578+2526 SLW 411 332 21.4 62
Show 09551+2438 TOK 272 26 461.9 68
Show 09553+2458 LAS 13 238 10.1 70
Show 10040+2521 COU 589 68 0.4 73
Show 09547+2428 NSN 36 197 4.8 74
Show 09577+2540 COU 938 64 0.1 75
Show 09559+2344 POU3063 10 4.6 75
Show 09543+2418 POU3062 340 10.6 81
Show 09588+2604 GRV 806 343 29.9 93
Show 10049+2543 LDS3954 313 11.4 96
Show 09589+2255 POU3065 142 14.4 100
Show 09554+2559 UC 1844 298 11.0 107
Show 10023+2621 COU1125 251 2.8 113
Show 10085+2419 LSC 125 307 0.4 117
Show 10036+2619 LDS3951 278 16.0 117
Show 10011+2237 POU3068 142 18.8 117
Show 10038+2246 POU3071 161 6.1 119
Show 09514+2456 CBL 291 84 21.4 120
Show 09574+2237 SLW 410 20 149.7 122
Show 09510+2432 CVR1247 277 4.0 123
Show 09513+2507 TDS6856 92 0.5 125
Show 10066+2602 TDS 569 89 2.3 126
Show 10059+2611 KPP3224 177 0.8 127
Show 09542+2612 COU1124 295 0.6 127
Show 09508+2410 CVR 93 107 53.7 129
Show 09568+2232 POU3064 183 5.8 131
Show 09571+2639 CBL 295 101 50.6 133
Show 10092+2501 FOX 165 70 7.5 133
Show 10091+2531 A 1988 229 0.4 136
Show 09537+2239 POU3061 265 21.9 143
Show 10077+2255 POU3073 349 11.4 147
Show 10059+2241 POU3072 282 4.1 147
Show 09580+2208 UC 1853 163 15.6 148
Show 10106+2353 A 1989 285 3.4 151
Show 09517+2617 COU1122 88 1.0 153
Show 09488+2424 POU3059 67 7.9 154
Show 09489+2509 CVR1244 221 4.5 156
Show 09585+2159 CHE 143 317 22.9 156
Show 10092+2259 CVR1268 160 3.1 157
Show 09530+2638 COU1123 76 0.4 157

 
 
WDS 10000+2433 : COMPONENTS
 
 
  A
B pa=159.4°
sep=0.12"
 
 
10000+2433 A
 
 
Componente originario normalizzato AB Var name DH Leo Coord arcsec 2000 100001.70+243309.9 Mag 8.12
Spectral class K0V (yellow-orange) PmRA -236.00 PmDE -32.0 SAO 81134
HIP 49018 Tycho2 1961-01385-1 HD 86590 GC 13748
BD BD+25 2191
Tycho2
Tycho2 1961-01385-1 Pflag RAmdeg 150.00710846 DEmdeg 24.55274776
PmRA -233.2 PmDE -33.1 E RAmdeg 5 E DEmdeg 6
E pmRA 1.0 E pmDE 1.0 EpRAm 1990.98 EpDEm 1990.50
Num 18 Q RAmdeg 1.6 Q DEmdeg 1.5 Q pmRA 1.6
Q pmDE 1.5 BTmag 8.980 E BTmag 0.017 VTmag 7.971
E VTmag 0.011 Prox 999 TYC T HIP 49018
CCDM AB RAdeg 150.00771528 DEdeg 24.55282833 EpRA 1990 1.48
EpDE 1990 1.24 E RAdeg 5.4 E DEdeg 6.2 Posflg
Corr 0.3
SAO
SAO 81134 DelFlag RA1950 PmRA1950 -0.0177
DE1950 PmDE1950 -0.03 Vmag 7.9 SpType G5
Double code Source 70 CatNum 13748 DM BD+25 2191
DMcomp BDsup HD 86590 M HD 0
GC 13748 RA1950rad 2.60586987 DE1950rad 0.43272899 PmRA2000 -0.0177
PmDE2000 -0.025
Hipparcos
Catalog H HIP 49018 Proxy H RAhms 10 00 01.86
DEdms +24 33 10.2 Vmag 7.86 VarFlag 1 R Vmag H
RAdeg 150.008 DEdeg 24.5528 AstroRef * Plx 30.82
CCDM 10000+2433 N CCDM M Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 46 Rho 0.22 HD 86590 BD BD+25 2191
CD CP Dm number +25 2191 VIred 0.89
SpType K0V SB R SpType Coord arcsec 2000 100001.86+243310.2
Hipparcos 2
HIP 49018 Sn 55 So 3 Nc 2
RArad 2.6181287897 DErad 0.4285276982 Plx 31.56 PmRA -233.23
PmDE -35.5 E RArad 0.63 E DErad 0.55 E Plx 0.85
E pmRA 0.66 E pmDE 0.51 Hpmag 8.0013 E Hpmag 0.003
SHp 0.032 VA 1 BV 0.868 E BV 0.012
VI 0.88
CCDM
Ccdm 10000+2433 RComp Comp A Note1
Note2 Discov num DRAs 1.70 DDEs 9.5
R dRAs 81 Year Theta Rho
Obs 2 Vmag 8.4 Sp K0 PmNote @
PmRA -234 PmDE -38 Dm number +25 2191 Cat1 BD
Name2 +24 1119 Cat2 AGK2/3 HD 86590 M HD
ADS BDS M ADS BDS N N IDS W IDS 10000+2433A
HIC 49018
 
 
10000+2433 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 100001.70+243309.8 Mag 10.43 Calc delta mag 2.31
Calc coord yes
CCDM
Ccdm 10000+2433 RComp Comp B Note1
Note2 Discov num CHR 145 DRAs DDEs
R dRAs Year 1989 Theta 38 Rho 0.2
Obs 1 Vmag Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS W IDS 10000+2433B
HIC 49018