20493+3217 LDS 2931 AB
20h 49m 16.23s +32° 17' 05.2" P.A. 246.00 sep 34.4 mag 8.26,16.63 Sp K2 dist. 24.05 pc (78.45 l.y.)
| Coord 2000 |
20493+3217 |
|
Discov num |
LDS2931 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 49 16.23 +32 17 05.2 |
|
| Date first |
1953 |
|
Date last |
2016 |
|
Obs |
15 |
|
| Pa first |
246 |
|
Pa last |
246.1 |
|
P.A. Now (θ) |
246.1° |
|
| Sep first |
35.0 |
|
Sep last |
34.436 |
|
Sep. Now (ρ) |
34.436" |
|
| Mag pri |
8.26 |
|
Mag sec |
16.63 |
|
delta mag (ΔM) |
8.37 |
|
Spectral class |
K2 (yellow-orange) |
|
| Pri motion ra |
-159 |
|
Sec motion ra |
-158 |
|
| Pri motion dec |
-266 |
|
Sec motion dec |
-278 |
|
| Notes |
V
(Proper motion indicates physical) |
|
rPM=0.038 (< 0.3, Physical double)
This double is physical.
20493+3217 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
70545 |
20 49 16 +32 17 05 |
LDS 2931 AB |
2016 |
15 |
246 |
34.4 |
8.26 |
16.63 |
8.37 |
|
<=== |
| Show |
V2431 Cyg |
70545 |
20 49 16 +32 17 05 |
HLA 28 AC |
2016 |
2 |
125 |
5.3 |
6.00 |
12.90 |
6.90 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
V2431 Cyg |
|
Constellation |
Cygnus |
|
SAO |
70545 |
|
HIP |
102766 |
|
| Tycho2 |
2691-00059-1 |
|
HD |
198425 |
|
BD |
BD+31 4230 |
|
Distance |
24.05 |
|
| Distance ly |
78.45 |
|
WDS 20493+3217 LDS 2931 AB : NOTES
No records found.
REFERENCES
| refcode |
metd |
author |
reference |
| HLA2019 |
A - |
Hirsch, L.A., Ciardi, D.R., Howards, A.W., Marcy, G.W., Ruane, G., Gonzalez, E., |
2019ApJ...878...50H |
| HLA2019 |
|
Blunt, S., Crepp, J.R., Fulton, B.J., Isaacson, H., Kosiarek, M., Mawet, D., |
|
| HLA2019 |
|
Sinukoff, E. & Weiss, L. |
|
| HLA2019 |
|
ApJ 878, 50, 2019 |
|
| HLA2021 |
A |
Hirsch, L.A., Rosenthal, L., Fulton, B.J., Howard, A.W., Ciardi, D.R., Marcy, G.W., |
2021AJ....161..134H |
| HLA2021 |
|
Nielsen, E., Petigura, E.A., de Rosa, R.J., Isaacson, H., Weiss, L.M., Sinukoff, E. |
|
| HLA2021 |
|
& Macintosh, B. |
|
| HLA2021 |
|
AJ 161, 134 2021 |
|
| LDS |
|
Luyten p.m. catalog (from additional DD list) |
................... |
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 20493+3217 |
LDS2931 |
AB |
2016 |
15 |
246 |
34.4 |
8.26 |
16.63 |
K2 |
V |
204916.23+321705.2 |
If you need more information about this double, apply for a
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WDS 20493+3217 LDS 2931 AB : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 20493+3217 LDS 2931 AB : MEASURES
No records found.
WDS 20493+3217 : VIRTUAL EYEPIECE
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Pass over with the mouse cursor to display the catalog designation.
|
|
WDS 20493+3217 : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
