21232-8703 I 337 AB
21h 23m 09.94s -87° 03' 08.4" P.A. 99.00 sep 0.2 mag 9.10,10.10 Sp G8:III dist. 33.07 pc (107.87 l.y.)
| Coord 2000 |
21232-8703 |
|
Discov num |
I 337 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 23 09.94 -87 03 08.4 |
|
| Date first |
1900 |
|
Date last |
2017 |
|
Obs |
6 |
|
| Pa first |
289 |
|
Pa last |
99.2 |
|
P.A. Now (θ) |
99.2° |
|
| Sep first |
1.0 |
|
Sep last |
0.21 |
|
Sep. Now (ρ) |
0.21" |
|
| Mag pri |
9.10 |
|
Mag sec |
10.10 |
|
delta mag (ΔM) |
1 |
|
Spectral class |
G8:III (yellow) |
|
| Pri motion ra |
+125 |
|
Sec motion ra |
|
|
| Pri motion dec |
-089 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
21232-8703 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 23 10 -87 03 08 |
I 337 AB |
2017 |
6 |
99 |
0.2 |
9.10 |
10.10 |
1.00 |
Y |
<=== |
| Show |
HD 198477 |
|
21 23 10 -87 03 08 |
HJ 5192 AB,C |
2000 |
18 |
318 |
17.9 |
8.82 |
9.02 |
0.20 |
|
|
| Show |
|
|
21 23 10 -87 03 08 |
I 337 AD |
2000 |
3 |
88 |
29.4 |
9.30 |
12.76 |
3.46 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Octans |
|
HIP |
105585 |
|
Tycho2 |
9532-00510-1 |
|
Gaia DR2 |
6342009495947839744 |
|
| HD |
198477 |
|
CP |
CP-87 303 |
|
Distance |
33.07 |
|
Distance ly |
107.87 |
|
ORBITAL ELEMENTS
| Period (P) | 240y | |
Periastron (T) | 2010.42y | ± 0.46 |
Semi-major axis (a) | 0.695a | ± 0.045 |
| Eccentricity (e) | 0.714 | ± 0.029 |
Inclination (i) | 88.4° | ± 2.6 |
Longitude of periastron (ω) | 148.6° | ± 6.7 |
| Node (Ω) | 279.1° | ± 1.6 |
Notes | n | |
Reference | Tok2018d | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
281.8 |
0.174 |
| 2001 |
282.3 |
0.142 |
| 2002 |
283.3 |
0.108 |
| 2003 |
285.0 |
0.074 |
| 2004 |
289.9 |
0.039 |
| 2005 |
345.7 |
0.008 |
| 2006 |
87.8 |
0.033 |
| 2007 |
94.1 |
0.068 |
| 2008 |
96.2 |
0.101 |
| 2009 |
97.2 |
0.132 |
| 2010 |
97.9 |
0.160 |
| 2011 |
98.4 |
0.182 |
| 2012 |
98.8 |
0.200 |
| 2013 |
99.1 |
0.212 |
| 2014 |
99.4 |
0.219 |
| 2015 |
99.7 |
0.222 |
| 2016 |
100.0 |
0.220 |
| 2017 |
100.3 |
0.216 |
| 2018 |
100.6 |
0.209 |
| 2019 |
100.9 |
0.200 |
| 2020 |
101.3 |
0.189 |
| 2021 |
101.7 |
0.177 |
| 2022 |
102.2 |
0.164 |
| 2023 |
102.8 |
0.150 |
| 2024 |
103.5 |
0.136 |
| 2025 |
104.4 |
0.121 |
| 2026 |
105.5 |
0.106 |
| 2027 |
106.9 |
0.090 |
| 2028 |
109.0 |
0.075 |
| 2029 |
112.3 |
0.059 |
| 2030 |
117.8 |
0.044 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 21232-8703 I 337 AB : NOTES
| discov_num |
notes |
refcode |
| I 337 |
Combined solution. |
Tok2018d |
REFERENCES
| refcode |
metd |
author |
reference |
| Tok2018d |
orb j |
Tokovinin, A. |
2018AJ....156...48T |
| Tok2018d |
|
AJ 156, 48, 2018 |
|
DISCOVERER
| idgroup |
discov |
author |
| 1 |
HJ |
Herschel, J.F.W. |
| 50 |
I |
Innes, R.T.A. |
| 54 |
I |
MNRAS 57, 533, 1897 (data also in I__1897b, |
| 54 |
I |
I__1897c) |
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 21232-8703 |
I 337 |
AB |
1928 |
3 |
287 |
1.1 |
9.10 |
10.10 |
G8:III |
|
212309.94-870308.4 |
| 21232-8703 |
I 337 |
AB |
2014 |
4 |
278 |
0.2 |
9.10 |
10.10 |
G8:III |
|
212309.94-870308.4 |
| 21232-8703 |
I 337 |
AB |
2015 |
5 |
99 |
0.2 |
9.10 |
10.10 |
G8:III |
|
212309.94-870308.4 |
| 21232-8703 |
I 337 |
AB |
2017 |
6 |
99 |
0.2 |
9.10 |
10.10 |
G8:III |
|
212309.94-870308.4 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 21232-8703 I 337 AB : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 21232-8703 I 337 AB : MEASURES
No records found.
WDS 21232-8703 : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
|
|
WDS 21232-8703 : ALADIN DSS IMAGE @ 21h 23m 09.94s -87° 03' 08.4"
WDS 21232-8703 I 337 AB : NEIGHBORHOODS
|
|
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
|
| Show |
name |
coord_2000 |
discov# |
comp |
pa |
sep |
dist(') |
| Show |
|
21232-8703 |
I 337 |
AB |
99 |
0.2 |
1 |
| Show |
|
21232-8703 |
HJ 5192 |
AB,C |
318 |
17.9 |
1 |
| Show |
|
21232-8703 |
I 337 |
AD |
88 |
29.4 |
1 |
| Show |
|
21079-8645 |
JSP 815 |
|
289 |
2.2 |
21 |
| Show |
|
21057-8443 |
UC 4376 |
|
117 |
7.9 |
142 |
| Show |
|
21201-8439 |
UC 4446 |
|
95 |
8.2 |
145 |
| Show |
|
21382-8435 |
TDT3070 |
|
109 |
2.4 |
149 |
| Show |
|
21213-8419 |
HJ 5235 |
|
80 |
3.2 |
165 |
| Show |
|
21159-8316 |
HJ 5233 |
|
268 |
11.7 |
228 |
| Show |
|
21378-8301 |
UC 4515 |
|
56 |
52.5 |
243 |
|
|
WDS 21232-8703 : COMPONENTS
| |
A |
B |
C |
| B |
pa=162.4°
sep=0.04"
| |
| C |
pa=357.4°
sep=13.41"
| pa=357.3°
sep=13.44"
| |
| D |
pa=58.6°
sep=1.77"
| pa=57.5°
sep=1.78"
| pa=170.3°
sep=12.65"
|
21232-8703 A
| Coord arcsec 2000 |
212309.94-870308.4 |
|
Mag |
9.1 |
|
Spectral class |
G8:III (yellow) |
|
PmRA |
125.00 |
|
| PmDE |
-89.0 |
|
HIP |
105585 |
|
HD |
198477 |
|
CP |
CP-87 303 |
|
| Catalog |
H |
|
HIP |
105585 |
|
Proxy |
|
|
RAhms |
21 23 08.57 |
|
| DEdms |
-87 03 07.5 |
|
Vmag |
8.8 |
|
VarFlag |
|
|
R Vmag |
H |
|
| RAdeg |
320.786 |
|
DEdeg |
-87.0521 |
|
AstroRef |
A |
|
Plx |
19.1 |
|
| CCDM |
21230-8703 |
|
N CCDM |
I |
|
Nsys |
2 |
|
Ncomp |
1 |
|
| MultFlag |
C |
|
Source |
I |
|
Qual |
A |
|
M HIP |
|
|
| Theta |
|
|
Rho |
|
|
HD |
198477 |
|
BD |
|
|
| CD |
|
|
CP |
CP-87 303 |
|
Dm number |
-87 303 |
|
VIred |
0.78 |
|
| SpType |
G8:III:+... |
|
R SpType |
|
|
Coord arcsec 2000 |
212308.57-870307.5 |
|
| HIP |
105585 |
|
Sn |
95 |
|
So |
3 |
|
Nc |
1 |
|
| RArad |
5.5987637502 |
|
DErad |
-1.5193454576 |
|
Plx |
30.24 |
|
PmRA |
116.74 |
|
| PmDE |
-81.55 |
|
E RArad |
4.08 |
|
E DErad |
3.84 |
|
E Plx |
4.85 |
|
| E pmRA |
4.75 |
|
E pmDE |
4.2 |
|
Hpmag |
9.0319 |
|
E Hpmag |
0.0331 |
|
| SHp |
0 |
|
VA |
0 |
|
BV |
0.758 |
|
E BV |
0.017 |
|
| VI |
0.8 |
|
21232-8703 B
| Coord arcsec 2000 |
212309.95-870308.4 |
|
Mag |
10.1 |
|
Calc delta mag |
1 |
|
Calc coord |
yes |
|
21232-8703 C
| Coord arcsec 2000 |
212309.15-870255.0 |
|
Mag |
9.02 |
|
PmRA |
129.00 |
|
PmDE |
-92.0 |
|
| Tycho2 |
9532-00510-1 |
|
Calc delta mag |
0.08 |
|
Calc coord |
yes |
|
| Tycho2 |
9532-00510-1 |
|
Pflag |
|
|
RAmdeg |
320.79126981 |
|
DEmdeg |
-87.05229376 |
|
| PmRA |
124.5 |
|
PmDE |
-88.9 |
|
E RAmdeg |
9 |
|
E DEmdeg |
9 |
|
| E pmRA |
1.3 |
|
E pmDE |
1.2 |
|
EpRAm |
1990.69 |
|
EpDEm |
1990.47 |
|
| Num |
9 |
|
Q RAmdeg |
0.8 |
|
Q DEmdeg |
0.9 |
|
Q pmRA |
0.8 |
|
| Q pmDE |
0.9 |
|
BTmag |
9.672 |
|
E BTmag |
0.022 |
|
VTmag |
8.821 |
|
| E VTmag |
0.014 |
|
Prox |
180 |
|
TYC |
T |
|
HIP |
105585 |
|
| CCDM |
A |
|
RAdeg |
320.78570583 |
|
DEdeg |
-87.05208889 |
|
EpRA 1990 |
1.73 |
|
| EpDE 1990 |
1.72 |
|
E RAdeg |
8.9 |
|
E DEdeg |
8.8 |
|
Posflg |
|
|
| Corr |
0.0 |
|
21232-8703 D
| Coord arcsec 2000 |
212311.90-870307.5 |
|
Mag |
12.76 |
|
PmRA |
7.00 |
|
PmDE |
6.0 |
|
| Calc delta mag |
3.66 |
|
Calc coord |
yes |
|
