02288-4407 B  2557

 
 
02h 28m 50.49s -44 06' 55.4" P.A. 265 sep 12.2 mag 9.33,13.50 Sp M1/2III: dist. 840.34 pc (2741.19 l.y.)
 
 
Coord 2000
02288-4407
Discov num
B  2557
Comp
Coord arcsec 2000
02 28 50.49 -44 06 55.4
Date first
1932
Date last
2015
Obs
3
Pa first
270
Pa last
265
P.A. Now (θ)
265°
Sep first
8.0
Sep last
12.2
Sep. Now (ρ)
12.2"
Mag pri
9.33
Mag sec
13.50
delta mag (ΔM)
4.17
Spectral class
M1/2III: (red)
Pri motion ra
+004
Sec motion ra
Pri motion dec
-011
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
264.7
Precise sep
12.21
Constellation
Eridanus
SAO
215915
HIP
11551
Tycho2
7558-00471-1
HD
15567
CD
CD-44 745
CP
CP-44 279
Distance
840.34
Distance ly
2741.19
last precise pa
264.7
last precise sep
12.21
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02288-4407 B 2557 1932 1 270 8.0 9.00 13.00 M1/2III: 022850.49-440655.4
02288-4407 B 2557 1998 2 267 12.1 9.33 13.50 M1/2III: 022850.49-440655.4
02288-4407 B 2557 2015 3 265 12.2 9.33 13.50 M1/2III: 022850.49-440655.4

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