10181+2731 STF1421

 
 
10h 18m 05.54s +27 31' 27.9" P.A. 330 sep 4.6 mag 8.19,9.12 Sp F2 dist. 429.18 pc (1399.99 l.y.)
 
 
Coord 2000
10181+2731
Discov num
STF1421
Comp
Coord arcsec 2000
10 18 05.54 +27 31 27.9
Date first
1827
Date last
2017
Obs
55
Pa first
315
Pa last
330
P.A. Now (θ)
330°
Sep first
2.0
Sep last
4.6
Sep. Now (ρ)
4.6"
Mag pri
8.19
Mag sec
9.12
delta mag (ΔM)
0.93
Spectral class
F2 (yellow-white)
Pri motion ra
+010
Sec motion ra
+001
Pri motion dec
-040
Sec motion dec
-020
Notes
rPM=0.532
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
330.3
Precise sep
4.601
Constellation
Leo
SAO
81277
HIP
50451
Tycho2
1975-00452-1
HD
89223
BD
BD+28 1866
Distance
429.18
Distance ly
1399.99
last precise pa
330.3
last precise sep
4.601
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10181+2731 STF1421 2008 49 332 4.4 8.19 9.12 F2 D 101805.54+273127.9
10181+2731 STF1421 2012 53 331 4.5 8.19 9.12 F2 D 101805.54+273127.9
10181+2731 STF1421 2017 55 330 4.6 8.19 9.12 F2 101805.54+273127.9

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