20215+3035 ARY 4 AB (HD 193857)
20h 21m 29.56s +30° 35' 25.0" P.A. 287.00 sep 134.9 mag 6.78,8.54 Sp Am dist. 114.29 pc (372.81 l.y.)
| Coord 2000 |
20215+3035 |
|
Discov num |
ARY 4 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 21 29.56 +30 35 25.0 |
|
| Date first |
1900 |
|
Date last |
2015 |
|
Obs |
17 |
|
| Pa first |
288 |
|
Pa last |
286.5 |
|
P.A. Now (θ) |
286.5° |
|
| Sep first |
135.1 |
|
Sep last |
134.857 |
|
Sep. Now (ρ) |
134.857" |
|
| Mag pri |
6.78 |
|
Mag sec |
8.54 |
|
delta mag (ΔM) |
1.76 |
|
Spectral class |
Am (white) |
|
| Pri motion ra |
+012 |
|
Sec motion ra |
+008 |
|
| Pri motion dec |
+022 |
|
Sec motion dec |
+010 |
|
| Notes |
|
|
rPM=0.505
Nature of this double is uncertain.
20215+3035 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 193857 |
69888 |
20 21 30 +30 35 25 |
ARY 4 AB |
2015 |
17 |
287 |
134.9 |
6.78 |
8.54 |
1.76 |
|
<=== |
| Show |
|
69879 |
20 21 20 +30 36 04 |
BU 1259 Ba,Bb |
1991 |
26 |
191 |
0.2 |
9.06 |
9.60 |
0.54 |
|
|
| Show |
|
69879 |
20 21 20 +30 36 04 |
BU 1259 BC |
2012 |
9 |
356 |
10.3 |
8.54 |
13.50 |
4.96 |
|
|
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 193857 |
|
Constellation |
Cygnus |
|
SAO |
69888 |
|
HIP |
100384 |
|
| Tycho2 |
2672-02202-1 |
|
Gaia DR2 |
1861588192186372864 |
|
HD |
193857 |
|
GC |
28318 |
|
| BD |
BD+30 3998 |
|
Distance |
114.29 |
|
Distance ly |
372.81 |
|
