Astronomisches Rechen-Institut Heidelberg

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Running No.: 1631   CNS designation: Gl 781    HIP:  98906   YPC: 4775.00   LHS:  482   

RA (2000):  20 05 02   Dec (2000):  +54 26.1  
RA (1950):  20 03 55   Dec (1950):  +54 18.2  
RA (1900):  20 02 48   Dec (1900):  +54 10.4  

µ(RA):  -1.157 "/yr   µ(Dec):  -.882 "/yr     Total Proper Motion:   1.455 "/yr  232.7°  

V :  11.99    B-V:  1.58    V-Rc:  .97    R-Ic:  1.04    Spectral Type:  M0   

Trig. Par.:  60.7 ± 2.2  mas   Obs.  (good accord.)    Res. Par. (Trig. Par.):  60.7  ± 2.2  mas     Distance:  16.47  ± .60 pc  

MV : 10.91    M Qual.: a     RV: -140.3 km/s   RV Qual.: e    Remark:  SB   

Space Velocity:     U:  +102  km/s    V:  -149  km/s    W:  +012 km/s

Additional Designations: AC+55 50103 V1531 Cyg  

Notes:  sdM1.5 Gizis AJ113,806-97; RV range -149 +79 (10)  



HIPPARCOS DATA

 Hipp P__HIP_H2___RA____J2000__Dec________V___v_S10__piH______pma_____pmd____

      N 98906| |20  5  2.19|+54 26  3.3|11.98| |G |  63.23|-1165.56| -900.24|


__sRA___sDec___spi____spma___spmd___-%__F2____Bt_____sig___Vt_____sig__

  5.79|  5.72|  6.44|  8.06|  6.18|  0|     |      |     |      |     |


36__B-V___sig__s_V-I__sig__s_43__Hp_____sig____Hmax__Hmin_period 52.3.4_

 | 1.524|0.006|G|2.25|0.04|I| |11.9703|0.0074|11.85|12.08|       |D| | |


___CCDM___56.7_58_59.0.1_62_pa____sep____sig__d(Hp)_sig__S_C_N_

          | |  | 1|X| |S|  |   |       |     |     |    | |D| |


    U      V      W      sU    sV    sW 

   99.8 -147.7   10.5   10.5  17.6   5.5




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Updated: 4 March 1998

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