00172+0022 WAA   2

 
 
00h 17m 11.09s +00 22' 00.5" P.A. 55.00 sep 7.4 mag 17.90,18.10 Sp M1+M2
 
 
Coord 2000
00172+0022
Discov num
WAA   2
Comp
Coord arcsec 2000
00 17 11.09 +00 22 00.5
Date first
1951
Date last
2015
Obs
9
Pa first
58
Pa last
55
P.A. Now (θ)
55°
Sep first
7.8
Sep last
7.4
Sep. Now (ρ)
7.4"
Mag pri
17.90
Mag sec
18.10
delta mag (ΔM)
0.2
Spectral class
M1+M2 (red/red)
Pri motion ra
+003
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
55.1
Precise sep
7.387
Constellation
Hydra
SAO
109106
Gaia DR2
2545546066013157760
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00172+0022 WAA 2 2001 1 56 7.5 17.90 18.10 M1+M2 001711.09+002200.5
00172+0022 WAA 2 2010 7 56 7.4 17.90 18.10 M1+M2 001711.09+002200.5
00172+0022 WAA 2 2015 8 55 7.4 17.90 18.10 M1+M2 001711.09+002200.5

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