15339+6354 STT 299 (TW Dra)

 
 
15h 33m 51.06s +63 54' 25.7" P.A. 25 sep 3.4 mag 7.50,9.89 Sp A5 dist. 138.7 pc (452.44 l.y.)
 
 
Coord 2000
15339+6354
Discov num
STT 299
Comp
Coord arcsec 2000
15 33 51.06 +63 54 25.7
Date first
1843
Date last
2011
Obs
38
Pa first
21
Pa last
25
P.A. Now (θ)
25°
Sep first
3.3
Sep last
3.4
Sep. Now (ρ)
3.4"
Mag pri
7.50
Mag sec
9.89
delta mag (ΔM)
2.39
Spectral class
A5 (white)
Pri motion ra
+010
Sec motion ra
+011
Pri motion dec
+017
Sec motion dec
+022
Notes
N (See Notes)
rPM=0.207 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
24.5
Precise sep
3.41
Var name
TW Dra
Constellation
Draco
SAO
16767
HIP
76196
Tycho2
4184-00061-1
HD
139319
BD
BD+64 1077
Distance
138.7
Distance ly
452.44
last precise pa
24.5
last precise sep
3.41
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15339+6354 STT 299 2000 36 25 3.3 7.50 9.89 A5 N 153351.06+635425.7
15339+6354 STT 299 2003 38 24 3.2 7.50 9.89 A5 N 153351.06+635425.7
15339+6354 STT 299 2011 39 25 3.3 7.50 9.89 A5 N 153351.06+635425.7

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