17566+3045 COU 999

 
 
17h 56m 38.55s +30 44' 34.2" P.A. 312 sep 1.4 mag 10.03,10.69 Sp F8
 
 
Coord 2000
17566+3045
Discov num
COU 999
Comp
Coord arcsec 2000
17 56 38.55 +30 44 34.2
Date first
1973
Date last
2015
Obs
10
Pa first
313
Pa last
312
P.A. Now (θ)
312°
Sep first
1.5
Sep last
1.4
Sep. Now (ρ)
1.4"
Mag pri
10.03
Mag sec
10.69
delta mag (ΔM)
0.66
Spectral class
F8 (yellow-white)
Pri motion ra
+058
Sec motion ra
+058
Pri motion dec
+035
Sec motion dec
+035
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
311.6
Precise sep
1.42
Cdsa2 id
COU 999
Constellation
Hercules
SAO
66492
Tycho2
2608-02386-1
Ra deg
17.944041666666667
De deg
30.742833333333333
last precise pa
311.6
last precise sep
1.42
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17566+3045 COU 999 2005 7 312 1.4 10.03 10.69 F8 175638.55+304434.2
17566+3045 COU 999 2008 8 310 1.4 10.03 10.69 F8 175638.55+304434.2
17566+3045 COU 999 2013 9 312 1.4 10.03 10.69 F8 175638.55+304434.2
17566+3045 COU 999 2015 10 312 1.4 10.03 10.69 F8 175638.55+304434.2

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