16001-3824 RMK  21AB (Eta Lup)

 
 
16h 00m 07.33s -38 23' 48.1" P.A. 19 sep 15 mag 3.37,7.50 Sp B2.5IV dist. 135.5 pc (442 l.y.)
 
 
Coord 2000
16001-3824
Discov num
RMK  21
Comp
AB
Coord arcsec 2000
16 00 07.33 -38 23 48.1
Date first
1834
Date last
2016
Obs
41
Pa first
22
Pa last
19
P.A. Now (θ)
19°
Sep first
13.5
Sep last
15.0
Sep. Now (ρ)
15"
Mag pri
3.37
Mag sec
7.50
delta mag (ΔM)
4.13
Spectral class
B2.5IV (blue-white)
Pri motion ra
-017
Sec motion ra
-026
Pri motion dec
-026
Sec motion dec
-030
Notes
N (See Notes)
rPM=0.248 (< 0.3, Physical double)
This double is physical.
 
 
16001-3824 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Eta Lup 207208 16001-3824 RMK 21 AB 1834 2016 41 19 15.0 3.37 7.50 4.13 <===
Show 207208 16001-3824 RMK 21 AC 1825 2007 13 248 115.8 3.37 9.39 6.02
Show 207208 16001-3824 ANT 2 AD 1905 2007 5 293 135.5 3.37 10.85 7.48
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
18.7
Precise sep
14.97
Name
Eta Lup
Cdsa2 id
RMK 21 AB
Constellation
Lupus
SAO
207208
HIP
78384
Tycho2
7851-01814-1
HD
143118
HR
5948
GC
21478
CD
CD-3810797
CP
CP-38 6322
Bayer
Eta Lupi
Bayer name
Eta Lup
Ra deg
16.00203611111111
De deg
-38.39669444444444
Distance
135.5
Distance ly
442
last precise pa
18.7
last precise sep
14.97
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16001-3824 RMK 21 AB 2007 36 20 14.4 3.37 7.50 B2.5IV N D 160007.33-382348.1
16001-3824 RMK 21 AB 2010 38 19 14.9 3.37 7.50 B2.5IV N D 160007.33-382348.1
16001-3824 RMK 21 AB 2013 40 19 15.0 3.37 7.50 B2.5IV N D 160007.33-382348.1
16001-3824 RMK 21 AB 2016 41 19 15.0 3.37 7.50 B2.5IV N 160007.33-382348.1

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