15041-2517 UC 2911 (Sig Lib)

 
 
15h 04m 04.21s -25 16' 55.1" P.A. 51 sep 69.7 mag 6.50,16.40 Sp M2.5III dist. 88.42 pc (288.43 l.y.)
 
 
Coord 2000
15041-2517
Discov num
UC 2911
Comp
Coord arcsec 2000
15 04 04.21 -25 16 55.1
Date first
1998
Date last
2000
Obs
2
Pa first
51
Pa last
51
P.A. Now (θ)
51°
Sep first
70.1
Sep last
69.7
Sep. Now (ρ)
69.7"
Mag pri
6.50
Mag sec
16.40
delta mag (ΔM)
9.9
Spectral class
M2.5III (red)
Pri motion ra
-074
Sec motion ra
-090
Pri motion dec
-044
Sec motion dec
-056
Notes
N V (See Notes, Proper motion indicates physical)
rPM=0.189 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
50.8
Precise sep
69.729
Name
Sig Lib
Constellation
Libra
SAO
183139
HIP
73714
Tycho2
6752-01455-1
Gaia DR2
04909889536
HD
133216
HR
5603
GC
20253
CD
CD-2411834
CP
CP-24 5432
Bayer
Sigma Librae
Bayer name
Sig Lib
Flamsteed
20 Librae
Flamsteed name
20 Lib
Distance
88.42
Distance ly
288.43
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15041-2517 UC 2911 2000 2 50 70.4 6.50 16.40 V 150404.21-251655.1

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