ARICNS ARI Data Base for Nearby Stars

Running No.: 56   CNS designation: Gl 31    HD:  4128    HIP:  3419   BD: -18° 115    YPC:  134.00  

RA (2000):  00 43 35   Dec (2000):  -17 59.2  
RA (1950):  00 41 05   Dec (1950):  -18 15.6  
RA (1900):  00 38 34   Dec (1900):  -18 32.1  

µ(RA):  .231 "/yr   µ(Dec):  .037 "/yr     Total Proper Motion:   0.234 "/yr   81.0°  

V :  2.03    B-V:  1.02    U-B:  .88    V-R_c:  .52    R-I_c:  .46    Spectral Type:  K1 IIIe   

Trig. Par.:  55.5 ± 9.3  mas   3  Obs.  (good accord.)    Res. Par. (Trig. Par.):  55.5  ± 9.3  mas     Distance:  18.02  ± 3.02 pc  

M_V :  .75    M Qual.: d     RV: + 12.8 km/s   RV Qual.: a    Remark:  RV var(?)   

Space Velocity:     U:  -019  km/s    V:  -006  km/s    W:  -013 km/s

Additional Designations: BET Cet  

Notes:  possibly var RV: Murdoch et al. ApJ413,349-93  

 Hipp P__HIP_H2___RA____J2000__Dec________V___v_S10__piH______pma_____pmd____

      N  3419| | 0 43 35.37|-17 59 11.8| 2.04|1|G |  34.04|  232.79|   32.71|


__sRA___sDec___spi____spma___spmd___-%__F2____Bt_____sig___Vt_____sig__

  0.65|  0.51|  0.82|  0.83|  0.54|  0|-2.60| 3.362|0.004| 2.159|0.004|


36__B-V___sig__s_V-I__sig__s_43__Hp_____sig____Hmax__Hmin_period 52.3.4_

 | 1.019|0.021|G|1.00|0.02|A| | 2.2062|0.0008| 2.20| 2.23|       |U|2| |


___CCDM___56.7_58_59.0.1_62_pa____sep____sig__d(Hp)_sig__S_C_N_

          | |  | 1| | | |  |   |       |     |     |    |S| | |


    U      V      W      sU    sV    sW 

  -30.7  -11.7  -12.6     .7    .4    .7

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Updated: 4 March 1998