21287+1810 HU 490 AB
21h 28m 43.82s +18° 09' 47.3" P.A. 316.00 sep 0.4 mag 9.60,12.10 Sp F8
Coord 2000 |
21287+1810 |
|
Discov num |
HU 490 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 28 43.82 +18 09 47.3 |
|
Date first |
1901 |
|
Date last |
2017 |
|
Obs |
13 |
|
Pa first |
212 |
|
Pa last |
315.7 |
|
P.A. Now (θ) |
315.7° |
|
Sep first |
0.3 |
|
Sep last |
0.36 |
|
Sep. Now (ρ) |
0.36" |
|
Mag pri |
9.60 |
|
Mag sec |
12.10 |
|
delta mag (ΔM) |
2.5 |
|
Spectral class |
F8 (yellow-white) |
|
Pri motion ra |
-038 |
|
Sec motion ra |
|
|
Pri motion dec |
-037 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
21287+1810 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
|
21 28 44 +18 09 47 |
HU 490 AB |
2017 |
13 |
316 |
0.4 |
9.60 |
12.10 |
2.50 |
|
<=== |
Show |
|
|
21 28 44 +18 09 47 |
B 2896 AC |
1961 |
1 |
26 |
3.8 |
9.53 |
14.10 |
4.57 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Pegasus |
|
Tycho2 |
1668-00206-1 |
|
Gaia DR2 |
1786048616600978560 |
|
ADS |
15005 |
|