Running No.: 1342  
CNS designation: Gl 644 A
HD: 152751
HIP: 82817
BD: -08° 4352
YPC: 3845.00
Vys: 782A
LHS: 428
RA (2000): 16 55 28
Dec (2000): -08 20.2
RA (1950): 16 52 48
Dec (1950): -08 14.7
RA (1900): 16 50 08
Dec (1900): -08 09.0
µ(RA): -.827 "/yr µ(Dec): -.906 "/yr
Total Proper Motion: 1.227 "/yr 222.4°
V : 9.69 c
B-V: 1.58 J
U-B: 1.08 J
V-Rc: 1.10 J
R-Ic: 1.37 J
Spectral Type: M2.5 V J
Trig. Par.: 154.9 ± .6 mas 16 Obs. (fair accord.)
Res. Par. (Trig. Par.): 154.9 ± .6 mas
Distance: 6.46 ± .03 pc
MV : 10.64 c
M Qual.: a
RV: + 14.5 km/s
RV Qual.: a
Space Velocity:
U: +018 km/s
V: -034 km/s
W: +011 km/s
Additional Designations: LTT 6749 Wolf 630 V1054 Oph
Notes: V(AB) = 9.02 d(m) = 0.18 ; cpm with Gl 643
Other ARICNS component(s): Gl 644 B and Gl 644 C
Hipp P__HIP_H2___RA____J2000__Dec________V___v_S10__piH______pma_____pmd____ N 82817|H|16 55 28.76|- 8 20 10.8| 9.02| |G*| 174.23| -829.31| -878.77| __sRA___sDec___spi____spma___spmd___-%__F2____Bt_____sig___Vt_____sig__ 6.80| 3.47| 3.90| 4.08| 2.48| 5| 3.06|10.982|0.054| 9.205|0.019| 36__B-V___sig__s_V-I__sig__s_43__Hp_____sig____Hmax__Hmin_period 52.3.4_ *| 1.553|0.020|G|2.46|0.00|A|*| 9.0139|0.0023| 8.97| 9.05| |D| | | ___CCDM___56.7_58_59.0.1_62_pa____sep____sig__d(Hp)_sig__S_C_N_ 16555-0820|I| 2| 2|C| |C|AS|340| 0.176|0.008| 0.08|0.21| | | | U V W sU sV sW 17.8 -29.5 10.4 .7 .7 .3
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Updated: 05 November 1998
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