18213-0254 STFB 8 (Eta Ser)
18h 21m 18.60s -02° 53' 55.8" P.A. 54.00 sep 251.4 mag 3.34,10.87 Sp K2IIIab dist. 18.54 pc (60.48 l.y.)
Coord 2000 |
18213-0254 |
|
Discov num |
STFB 8 |
|
Comp |
|
|
Coord arcsec 2000 |
18 21 18.60 -02 53 55.8 |
|
Date first |
1835 |
|
Date last |
2010 |
|
Obs |
25 |
|
Pa first |
77 |
|
Pa last |
54.2 |
|
P.A. Now (θ) |
54.2° |
|
Sep first |
110.9 |
|
Sep last |
251.38 |
|
Sep. Now (ρ) |
251.38" |
|
Mag pri |
3.34 |
|
Mag sec |
10.87 |
|
delta mag (ΔM) |
7.53 |
|
Spectral class |
K2IIIab (yellow-orange) |
|
Pri motion ra |
-548 |
|
Sec motion ra |
+000 |
|
Pri motion dec |
-701 |
|
Sec motion dec |
-007 |
|
Notes |
N
L
U
(See Notes, Linear solution, Proper motion indicates non-physical) |
|
rPM=0.994
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
Eta Ser |
|
Var name |
NSV10675 Ser |
|
Constellation |
Serpens |
|
SAO |
142241 |
|
HIP |
89962 |
|
Tycho2 |
5102-00416-1 |
|
HD |
168723 |
|
HR |
6869 |
|
GC |
25046 |
|
GL |
Gl 711 |
|
BD |
BD-02 4599 |
|
Bayer |
Eta Serpentis |
|
Bayer name |
Eta Ser |
|
Flamsteed |
58 Serpentis |
|
Flamsteed name |
58 Ser |
|
FK5 |
688 |
|
Distance |
18.54 |
|
Distance ly |
60.48 |
|
Bayer greek |
η Ser |
|