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Running No.: 1497   CNS designation: Gl 721    HD: 172167    HIP:  91262   BD: +38° 3238    YPC: 4293.00  

RA (2000):  18 36 57   Dec (2000):  +38 47.1  
RA (1950):  18 35 15   Dec (1950):  +38 44.2  
RA (1900):  18 33 33   Dec (1900):  +38 41.5  

µ(RA):  .201 "/yr   µ(Dec):  .284 "/yr     Total Proper Motion:   0.348 "/yr   35.2°  

V :  .03    B-V:  .00    U-B:  -.01    V-Rc: -0.01    R-Ic:  0.00    Spectral Type:  A0 V   

Trig. Par.: 130.0 ± 1.6  mas   Obs.       Res. Par. (Trig. Par.): 130.0  ± 1.6  mas     Distance:  7.69  ± .09 pc  

MV :  .60    M Qual.: a     RV: - 13.5 km/s   RV Qual.: a   

Space Velocity:     U:  -016  km/s    V:  -006  km/s    W:  -008 km/s

Additional Designations: ALF Lyr  

Notes:  pi(MAP) .1301 +- .0009 ApJ450,364-95  



HIPPARCOS DATA

 Hipp P__HIP_H2___RA____J2000__Dec________V___v_S10__piH______pma_____pmd____

      N 91262| |18 36 56.34|+38 47  1.3| 0.03|1|G | 128.93|  201.03|  287.47|


__sRA___sDec___spi____spma___spmd___-%__F2____Bt_____sig___Vt_____sig__

  0.48|  0.47|  0.55|  0.57|  0.60|  2| 1.31|      |     |      |     |


36__B-V___sig__s_V-I__sig__s_43__Hp_____sig____Hmax__Hmin_period 52.3.4_

 |-0.001|0.005|G|-.01|0.02|A| | 0.0868|0.0021| 0.07| 0.13|       |U|2|C|


___CCDM___56.7_58_59.0.1_62_pa____sep____sig__d(Hp)_sig__S_C_N_

18369+3847|I| 1| 1| | |S|  |   |       |     |     |    |S| | |


    U      V      W      sU    sV    sW 

  -16.0   -6.1   -7.5     .3    .6    .2




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Updated: 4 March 1998

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