02518-2117 SEE 21 (HD 17881)

 
 
02h 51m 46.12s -21° 17' 23.1" P.A. 323.00 sep 0.1 mag 9.00,9.20 Sp G3IV dist. 208.77 pc (681.01 l.y.)
 
 
Coord 2000 02518-2117 Discov num SEE  21 Comp Coord arcsec 2000 02 51 46.12 -21 17 23.1
Date first 1897 Date last 2021 Obs 19
Pa first 98 Pa last 323 P.A. Now (θ) 323°
Sep first 0.4 Sep last 0.084 Sep. Now (ρ) 0.084"
Mag pri 9.00 Mag sec 9.20 delta mag (ΔM) 0.2 Spectral class G3IV (yellow)
Pri motion ra +006 Sec motion ra
Pri motion dec +008 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 17881 Constellation Eridanus SAO 168103 HIP 13349
Tycho2 5870-00348-1 Gaia DR2 5127489879618204928 HD 17881 BD BD-21 511
Distance 208.77 Distance ly 681.01
 
 
WDS 02518-2117 SEE 21 (HD 17881) : NOTES
 
 
discov_num notes refcode
SEE 21 This very close visual system was discovered at a separation of 0".36 See1898b
and has closed steadily for over 90 years. It is unknown at this
point whether the system is still approaching periastron or has
begun to widen. Hrt1993
 
 
REFERENCES
 
 
refcode metd author reference
Hrt1993 Sc j Hartkopf, W.I., Mason, B.D., Barry, D.J., McAlister, H.A., Bagnuolo, W.G., & 1993AJ....106..352H
Hrt1993 Prieto, C.M.
Hrt1993 AJ 106, 352, 1993
See1898b Ma j See, T.J.J. 1898AJ.....18..181S
See1898b AJ 18, 181, 1898
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02518-2117 SEE 21 1993 17 51 0.1 9.00 9.20 G3IV N 025146.12-211723.1
02518-2117 SEE 21 2020 18 325 0.1 9.00 9.20 G3IV N 025146.12-211723.1
02518-2117 SEE 21 2021 19 323 0.1 9.00 9.20 G3IV N 025146.12-211723.1

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

 
 
WDS 02518-2117 SEE 21 (HD 17881) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 02518-2117 SEE 21 (HD 17881) : MEASURES
 
 
No records found.

 
 
WDS 02518-2117 (HD 17881) : VIRTUAL EYEPIECE
 
 

02518-2117 SEE  21A mag 9 Sp G3IV 02518-2117 SEE  21B sep 0.1 P.A. 324.90 mag 9.2 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 02518-2117 (HD 17881) : ALADIN DSS IMAGE @ 02h 51m 46.12s -21° 17' 23.1"
 
 
 
 
WDS 02518-2117 SEE 21 (HD 17881) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


02518-2117  SEE  21 distance=0' 02512-2125  I   461 distance=12' 02510-2100  SEE  20 (Angetenar) distance=20' 02514-2139  DON  43 distance=23' 02546-2109  KPP1712 distance=41' 02476-2115  RST2287 distance=58' 02501-2210  DON  42 distance=58' 02532-2014  ARA 833 distance=66' 02498-2015  HJ 3533 distance=69' 02513-2226  LDS3433 distance=71' 02544-2007  HDS 371 distance=80' 02482-2232  RST2288 distance=90' 02566-2219  NSN 242CD distance=92' 02472-2229  SKF2167AB distance=97' 02472-2229  CVN  71AC distance=97' 02441-2125  KPP2029 distance=108' 02456-2004  DON  40 distance=114' 02464-2250  SKF2166 distance=119' 02432-2108  LDS3420 distance=121' 03001-2157  DVG  15 distance=123' 02502-2323  RST2289 distance=128' 02528-2330  I   717 distance=134' 02430-2017  HJ 3524 distance=138' 02535-1859  LDS5400 distance=139' 03017-2136  RST2291 distance=140' 02437-2240  RST2286 distance=140' 02489-1902  B  1924 distance=142' 02578-2317  ARA1971 distance=146' 02573-2323  I   149 distance=147' 03022-2145  I   462 distance=149' 02474-2341  HU 1561 distance=156' 02586-2322  UC  922 distance=158' 02439-1925  LDS5392 distance=158' 02461-1853  UC  801 distance=166' 03038-2122  HJ 3548 distance=168' 02396-2115  B  1922 distance=170' 02401-2029  BRT 298 distance=172' 02395-2113  DAM1293 distance=172' 02445-1859  GWP 362 distance=172' 02542-1826  LDS3437 distance=176' 02397-2026  HDS 346 distance=178' 03020-2309  TDS2417AB distance=181' 02476-1819  LV    2 distance=188' 02578-1826  RSS  61 distance=192' 02563-1816  GWP 400 distance=193' 03059-2113  ARA1264 distance=198' 02498-2434  BU  877AB distance=198' 02498-2434  HJ 2161AC distance=198' 02498-2434  FOX9021AD distance=198' 02404-1914  RST2285 distance=203' 02427-2358  KPP2866 distance=205' 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 02518-2117 SEE 21 323 0.1
Show 02512-2125 I 461 330 3.2 12
Show Angetenar 02510-2100 SEE 20 127 49.6 20
Show 02514-2139 DON 43 287 0.2 23
Show 02546-2109 KPP1712 96 13.2 41
Show 02476-2115 RST2287 60 0.7 58
Show 02501-2210 DON 42 187 1.3 58
Show 02532-2014 ARA 833 358 11.1 66
Show 02498-2015 HJ 3533 267 37.8 69
Show 02513-2226 LDS3433 73 15.7 71
Show 02544-2007 HDS 371 347 0.1 80
Show 02482-2232 RST2288 47 1.2 90
Show 02566-2219 NSN 242 CD 273 4.4 92
Show 02472-2229 SKF2167 AB 213 69.4 97
Show 02472-2229 CVN 71 AC 347 1.7 97
Show 02441-2125 KPP2029 287 16.2 108
Show 02456-2004 DON 40 283 0.2 114
Show 02464-2250 SKF2166 272 29.5 119
Show 02432-2108 LDS3420 292 3.3 121
Show 03001-2157 DVG 15 156 12.3 123
Show 02502-2323 RST2289 300 0.3 128
Show 02528-2330 I 717 295 2.2 134
Show 02430-2017 HJ 3524 166 19.8 138
Show 02535-1859 LDS5400 156 308.4 139
Show 03017-2136 RST2291 129 1.3 140
Show 02437-2240 RST2286 1 0.2 140
Show 02489-1902 B 1924 236 0.4 142
Show 02578-2317 ARA1971 93 17.3 146
Show 02573-2323 I 149 259 6.1 147
Show 03022-2145 I 462 107 0.8 149
Show 02474-2341 HU 1561 320 1.1 156
Show 02586-2322 UC 922 209 12.8 158
Show 02439-1925 LDS5392 223 180.6 158
Show 02461-1853 UC 801 86 28.0 166
Show 03038-2122 HJ 3548 125 12.2 168
Show 02396-2115 B 1922 246 1.4 170
Show 02401-2029 BRT 298 314 4.0 172
Show 02395-2113 DAM1293 193 3.3 172
Show 02445-1859 GWP 362 298 159.3 172
Show 02542-1826 LDS3437 271 57.2 176
Show 02397-2026 HDS 346 221 0.8 178
Show 03020-2309 TDS2417 AB 33 1.6 181
Show 02476-1819 LV 2 26 2.9 188
Show 02578-1826 RSS 61 356 31.1 192
Show 02563-1816 GWP 400 287 65.9 193
Show 03059-2113 ARA1264 263 11.7 198
Show 02498-2434 BU 877 AB 145 12.1 198
Show 02498-2434 HJ 2161 AC 129 37.3 198
Show 02498-2434 FOX9021 AD 290 52.3 198
Show 02404-1914 RST2285 330 2.7 203
Show 02427-2358 KPP2866 64 1.8 205

 
 
WDS 02518-2117 : COMPONENTS
 
 
  A
B pa=324.9°
sep=0.08"
 
 
02518-2117 A
 
 
Componente originario normalizzato AB Name HD 17881 Coord arcsec 2000 025146.12-211723.1 Mag 9
Spectral class G3IV (yellow) PmRA 6.00 PmDE 8.0 SAO 168103
HIP 13349 Tycho2 5870-00348-1 HD 17881 BD BD-21 511
Tycho2
Tycho2 5870-00348-1 Pflag RAmdeg 42.94218012 DEmdeg -21.28973132
PmRA -2.0 PmDE 6.0 E RAmdeg 6 E DEmdeg 6
E pmRA 1.5 E pmDE 1.5 EpRAm 1990.92 EpDEm 1991.15
Num 7 Q RAmdeg 1.0 Q DEmdeg 0.8 Q pmRA 0.9
Q pmDE 0.9 BTmag 9.099 E BTmag 0.017 VTmag 8.256
E VTmag 0.012 Prox 999 TYC T HIP 13349
CCDM RAdeg 42.94218500 DEdeg -21.28974500 EpRA 1990 1.42
EpDE 1990 1.66 E RAdeg 6.3 E DEdeg 5.8 Posflg
Corr -0.2
SAO
SAO 168103 DelFlag RA1950 PmRA1950 0.001
DE1950 PmDE1950 0.001 Vmag 8 SpType G0
Double code Source 23 CatNum 776 DM BD-21 511
DMcomp BDsup HD 17881 M HD 0
GC RA1950rad 0.7395923 DE1950rad -0.37515286 PmRA2000 0.0013
PmDE2000 -0.002
Hipparcos
Catalog H HIP 13349 Proxy RAhms 02 51 46.12
DEdms -21 17 23.1 Vmag 8.18 VarFlag R Vmag H
RAdeg 42.9422 DEdeg -21.2897 AstroRef Plx 4.26
CCDM 02518-2117 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 17881 BD BD-21 511
CD CP Dm number -21 511 VIred 0.77
SpType G3IV R SpType Coord arcsec 2000 025146.12-211723.1
Hipparcos 2
HIP 13349 Sn 5 So 0 Nc 1
RArad 0.749482513 DErad -0.371576155 Plx 4.79 PmRA -0.81
PmDE 3.47 E RArad 0.46 E DErad 0.71 E Plx 0.79
E pmRA 0.56 E pmDE 0.9 Hpmag 8.3278 E Hpmag 0.0016
SHp 0.013 VA 0 BV 0.756 E BV 0.013
VI 0.8
CCDM
Ccdm 02518-2117 RComp Comp A Note1
Note2 Discov num DRAs -1.82 DDEs -23.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.0 Sp G0 PmNote *
PmRA 14 PmDE 1 Dm number -21 511 Cat1 BD
Name2 168103 Cat2 SAO HD 17881 M HD
ADS BDS A 2186 M ADS BDS N IDS IDS 02472S2142A
HIC 13349
 
 
02518-2117 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 025146.12-211723.0 Mag 9.2 Calc delta mag 0.2
Calc coord yes
CCDM
Ccdm 02518-2117 RComp Comp B Note1
Note2 Discov num SEE 21 DRAs DDEs
R dRAs Year 1959 Theta 078 Rho 0.2
Obs 11 Vmag 9.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 2186 M ADS BDS N IDS IDS 02472S2142B
HIC 13349