12421+5227 LDS3055

12h 42m 04.16s +52 27' 47.3" P.A. 8 sep 13.8 mag 17.60,18.50 Sp M4+M4

Coord 2000
12421+5227
Discov num
LDS3055
Comp
Coord arcsec 2000
12 42 04.16 +52 27 47.3
Date first
1960
Date last
2015
Obs
5
Pa first
7
Pa last
8
P.A. Now (θ)
Sep first
14.0
Sep last
13.8
Sep. Now (ρ)
13.8"
Mag pri
17.60
Mag sec
18.50
delta mag (ΔM)
0.9
Spectral class
M4+M4 (red/red)
Pri motion ra
-145
Sec motion ra
-146
Pri motion dec
-032
Sec motion dec
-034
Notes
V (Proper motion indicates physical)


rPM=0.015 (< 0.3, Physical double)

This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Precise pa
8.2
Precise sep
13.819
Constellation
Ursa Major
Gaia DR2
15591419648




WDS HISTORIC DATA

coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12421+5227 LDS3055 2000 2 8 13.8 17.60 18.50 D 124204.16+522747.3
12421+5227 LDS3055 2001 3 8 13.8 17.60 18.50 M4+M4 V 124204.16+522747.3
12421+5227 LDS3055 2010 4 7 13.0 17.60 18.50 M4+M4 V 124204.16+522747.3
12421+5227 LDS3055 2015 5 8 13.8 17.60 18.50 M4+M4 V 124204.16+522747.3

If you need more information about this double, apply for a data request form to the WDS.