20329+1803 HJ 2977

 
 
20h 32m 51.98s +18 02' 30.7" P.A. 317.00 sep 20.1 mag 9.60,10.45 Sp M2
 
 
Coord 2000
20329+1803
Discov num
HJ 2977
Comp
Coord arcsec 2000
20 32 51.98 +18 02 30.7
Date first
1831
Date last
2018
Obs
18
Pa first
332
Pa last
317
P.A. Now (θ)
317°
Sep first
15.5
Sep last
20.1
Sep. Now (ρ)
20.1"
Mag pri
9.60
Mag sec
10.45
delta mag (ΔM)
0.85
Spectral class
M2 (red)
Pri motion ra
+008
Sec motion ra
-007
Pri motion dec
-009
Sec motion dec
-009
Notes
rPM=1.246
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
316.6
Precise sep
20.11
Constellation
Delphinus
SAO
106223
Tycho2
1637-01145-1
Gaia DR2
83081431808
HD
352486
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20329+1803 HJ 2977 2004 11 317 19.8 9.60 10.45 M2 D 203251.98+180230.7
20329+1803 HJ 2977 2010 13 318 17.8 9.60 10.45 M2 203251.98+180230.7
20329+1803 HJ 2977 2016 13 317 19.7 9.60 10.45 M2 203251.98+180230.7
20329+1803 HJ 2977 2018 18 317 20.1 9.60 10.45 M2 203251.98+180230.7

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