12289+2555 STFA 21 AB (17 Com)
12h 28m 54.72s +25° 54' 46.4" P.A. 251.00 sep 146.4 mag 5.23,6.64 Sp A0p dist. 72.89 pc (237.77 l.y.)
| Coord 2000 |
12289+2555 |
|
Discov num |
STFA 21 |
|
Comp |
AB |
|
Coord arcsec 2000 |
12 28 54.72 +25 54 46.4 |
|
| Date first |
1836 |
|
Date last |
2018 |
|
Obs |
49 |
|
| Pa first |
251 |
|
Pa last |
251 |
|
P.A. Now (θ) |
251° |
|
| Sep first |
145.3 |
|
Sep last |
146.42 |
|
Sep. Now (ρ) |
146.42" |
|
| Mag pri |
5.23 |
|
Mag sec |
6.64 |
|
delta mag (ΔM) |
1.41 |
|
Spectral class |
A0p (white) |
|
| Pri motion ra |
-022 |
|
Sec motion ra |
-020 |
|
| Pri motion dec |
-016 |
|
Sec motion dec |
-016 |
|
| Notes |
N
(See Notes) |
|
rPM=0.074 (< 0.3, Physical double)
This double is physical.
12289+2555 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
17 Com |
82330 |
12 28 55 +25 54 46 |
STFA 21 AB |
2018 |
49 |
251 |
146.4 |
5.23 |
6.64 |
1.41 |
|
<=== |
| Show |
|
82330 |
12 28 55 +25 54 46 |
BU 1080 AD |
2015 |
7 |
270 |
324.0 |
5.23 |
11.63 |
6.40 |
|
|
| Show |
|
82330 |
12 28 55 +25 54 46 |
SLE 898 AE |
2015 |
4 |
270 |
447.4 |
5.23 |
13.60 |
8.37 |
|
|
| Show |
|
82330 |
12 28 55 +25 54 46 |
SLE 898 AF |
2015 |
4 |
145 |
125.5 |
5.23 |
13.92 |
8.69 |
|
|
| Show |
|
82328 |
12 28 45 +25 53 58 |
BU 1080 BC |
2015 |
5 |
180 |
1.4 |
6.64 |
13.70 |
7.06 |
|
|
| Show |
|
82328 |
12 28 45 +25 53 58 |
BU 1080 BD |
2015 |
7 |
284 |
192.9 |
6.64 |
11.63 |
4.99 |
|
|
Sextuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
17 Com |
|
Var name |
AI Com |
|
Constellation |
Coma Berenices |
|
SAO |
82330 |
|
| HIP |
60904 |
|
Tycho2 |
1989-03206-1 |
|
Gaia DR2 |
3960724252307181056 |
|
HD |
108662 |
|
| HR |
4752 |
|
GC |
17012 |
|
ADS |
8568 |
|
BD |
BD+26 2354 |
|
| Flamsteed |
17 Comae Berenices |
|
Flamsteed name |
17 Com |
|
Distance |
72.89 |
|
Distance ly |
237.77 |
|
