03342+4837 BU 787 AB (HD 21931)
03h 34m 12.97s +48° 37' 02.9" P.A. 293.00 sep 5.2 mag 7.38,11.90 Sp B9.5V dist. 261.1 pc (851.71 l.y.)
Coord 2000 |
03342+4837 |
|
Discov num |
BU 787 |
|
Comp |
AB |
|
Coord arcsec 2000 |
03 34 12.97 +48 37 02.9 |
|
Date first |
1881 |
|
Date last |
2016 |
|
Obs |
20 |
|
Pa first |
229 |
|
Pa last |
293.1 |
|
P.A. Now (θ) |
293.1° |
|
Sep first |
2.1 |
|
Sep last |
5.17 |
|
Sep. Now (ρ) |
5.17" |
|
Mag pri |
7.38 |
|
Mag sec |
11.90 |
|
delta mag (ΔM) |
4.52 |
|
Spectral class |
B9.5V (blue-white) |
|
Pri motion ra |
+023 |
|
Sec motion ra |
|
|
Pri motion dec |
-027 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
03342+4837 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 21931 |
38946 |
03 34 13 +48 37 03 |
BU 787 AB |
2016 |
20 |
293 |
5.2 |
7.38 |
11.90 |
4.52 |
Y |
<=== |
Show |
|
38946 |
03 34 13 +48 37 03 |
BU 787 AD |
2016 |
14 |
181 |
34.5 |
7.38 |
11.75 |
4.37 |
|
|
Show |
|
38946 |
03 34 13 +48 37 03 |
ARN 57 AE |
2015 |
14 |
29 |
175.2 |
7.38 |
8.81 |
1.43 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 21931 |
|
Constellation |
Perseus |
|
SAO |
38946 |
|
HIP |
16649 |
|
Tycho2 |
3317-00589-1 |
|
Gaia DR2 |
249282105184992384 |
|
HD |
21931 |
|
ADS |
2609 |
|
BD |
BD+48 949 |
|
Distance |
261.1 |
|
Distance ly |
851.71 |
|
ORBITAL ELEMENTS
Period (P) | 1789.0608y | ± 794.8903 |
Periastron (T) | 1762.567y | ± 326.8226 |
Semi-major axis (a) | 13.62295a | ± 7.90366 |
Eccentricity (e) | 0.83271 | ± 0.12449 |
Inclination (i) | 76.999° | ± 8.893 |
Longitude of periastron (ω) | 314.554° | ± 62.796 |
Node (Ω) | 153.189° | ± 25.712 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
290.6 |
4.736 |
2001 |
290.8 |
4.765 |
2002 |
291.0 |
4.793 |
2003 |
291.2 |
4.822 |
2004 |
291.4 |
4.851 |
2005 |
291.6 |
4.879 |
2006 |
291.8 |
4.908 |
2007 |
292.0 |
4.937 |
2008 |
292.2 |
4.965 |
2009 |
292.4 |
4.994 |
2010 |
292.6 |
5.023 |
2011 |
292.7 |
5.051 |
2012 |
292.9 |
5.080 |
2013 |
293.1 |
5.109 |
2014 |
293.3 |
5.138 |
2015 |
293.4 |
5.166 |
2016 |
293.6 |
5.195 |
2017 |
293.8 |
5.224 |
2018 |
294.0 |
5.252 |
2019 |
294.1 |
5.281 |
2020 |
294.3 |
5.310 |
2021 |
294.5 |
5.339 |
2022 |
294.6 |
5.367 |
2023 |
294.8 |
5.396 |
2024 |
294.9 |
5.425 |
2025 |
295.1 |
5.454 |
2026 |
295.3 |
5.482 |
2027 |
295.4 |
5.511 |
2028 |
295.6 |
5.540 |
2029 |
295.7 |
5.568 |
2030 |
295.9 |
5.597 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 03342+4837 BU 787 AB (HD 21931) : NOTES
discov_num |
notes |
refcode |
BU 787 |
Burnham notes: "Hussey measures a third star, 175.8deg, 12.70arcsec |
Hu_1903b |
|
(1898.70) 1n. I could not see this on one night with the 40-inch, but |
|
|
measured 11m star in nearly the same direction, 175.6deg, 36.78arcsec |
|
|
(1899.13) 1n." |
Bu_1906 |
|
C does not exist. |
B__1960b |
|
AB: Rectilinear solution by Cvetkovic (2011). |
Cve2011c |
|
Despite having an orbit, an optical pair based on parallax. |
Mlk2022 |
REFERENCES
refcode |
metd |
author |
reference |
B__1960b |
Ma j |
van den Bos, W.H. |
1960PYerO...9....1B |
B__1960b |
+Mb |
Pub. Yerkes Obs. 9, pt. 1, 1960 |
|
Bu_1906 |
Ma j |
Burnham, S.W. |
1906QB821.B972..... |
Bu_1906 |
+M |
Burnham Double Star Cat., 1906 |
|
Cve2011c |
C j |
Cvetkovic, Z., Pavlovic, R. & Damljanovic, G. & Boeva, S. |
2011AJ....142...73C |
Cve2011c |
+orb |
AJ 142, 73, 2011 |
|
Cve2011c |
+lin |
|
|
Hu_1903b |
Ma j |
Hussey, W.J. |
1903LicOB...2..115H |
Hu_1903b |
|
Lick Obs. Bull. 2, 115, 1903 |
|
Izm2019 |
orb u |
Izmailov, I.S. |
2019AstL...45...30I |
Izm2019 |
|
Ast. Lett. 45, 30, 2019 |
|
Izm2019 |
|
(Orbital elements from weighted solutions used when available (Table 2), |
|
Izm2019 |
|
unweighted elements (Table 1) used for remaining 29 systems.) |
|
Mlk2022 |
not - |
Chulkov, D. & Malkov, O. |
2022MNRAS.517.2925C |
Mlk2022 |
|
MNRAS 517, 2925, 2022 |
|
DISCOVERER
idgroup |
discov |
author |
1 |
ARN |
Arnold, D. |
100 |
BU |
Burnham, S.W. (BU 1 - 81) |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
03342+4837 |
BU 787 |
AB |
1999 |
16 |
288 |
4.5 |
7.38 |
11.90 |
B9.5V |
NOD |
033412.97+483702.9 |
03342+4837 |
BU 787 |
AB |
2010 |
17 |
291 |
4.7 |
7.38 |
11.90 |
B9.5V |
NOD |
033412.97+483702.9 |
03342+4837 |
BU 787 |
AB |
2016 |
18 |
293 |
5.2 |
7.38 |
11.90 |
B9.5V |
NO |
033412.97+483702.9 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 03342+4837 BU 787 AB (HD 21931) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 03342+4837 BU 787 AB (HD 21931) : MEASURES
No records found.
WDS 03342+4837 (HD 21931) : 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 03342+4837 (HD 21931) : ALADIN DSS IMAGE @ 03h 34m 12.97s +48° 37' 02.9"
WDS 03342+4837 BU 787 AB (HD 21931) : 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 |
|
03342+4837 |
BU 787 |
AB |
293 |
5.2 |
|
Show |
|
03342+4837 |
BU 787 |
AD |
181 |
34.5 |
|
Show |
|
03342+4837 |
ARN 57 |
AE |
29 |
175.2 |
|
Show |
|
03355+4847 |
BVD 190 |
|
67 |
14.8 |
17 |
Show |
|
03319+4844 |
PAT 41 |
|
350 |
0.1 |
25 |
Show |
|
03367+4840 |
HU 102 |
|
64 |
3.2 |
25 |
Show |
|
03315+4900 |
PAT 40 |
Aa,Ab |
91 |
0.1 |
36 |
Show |
|
03315+4900 |
MET 28 |
AB |
109 |
3.1 |
36 |
Show |
|
03322+4908 |
PAT 42 |
|
51 |
2.1 |
38 |
Show |
|
03304+4825 |
PAT 39 |
|
66 |
5.4 |
41 |
Show |
|
03372+4905 |
ES 54 |
|
251 |
4.6 |
41 |
Show |
|
03321+4801 |
BAG 40 |
|
260 |
0.1 |
42 |
Show |
|
03377+4807 |
HLD 9 |
AB |
55 |
1.3 |
47 |
Show |
|
03377+4807 |
HLD 9 |
AC |
65 |
55.5 |
47 |
Show |
|
03316+4752 |
STT 56 |
AB |
352 |
33.4 |
53 |
Show |
|
03316+4752 |
WAL 23 |
AC |
47 |
45.6 |
53 |
Show |
|
03395+4849 |
SKF2402 |
|
27 |
4.2 |
55 |
Show |
|
03290+4814 |
PAT 38 |
|
234 |
1.6 |
57 |
Show |
|
03283+4840 |
SKF2335 |
AB |
348 |
71.0 |
59 |
Show |
|
03283+4840 |
SKF2335 |
BC |
242 |
7.4 |
59 |
Show |
|
03285+4857 |
ES 1136 |
|
353 |
9.6 |
60 |
Show |
|
03373+4743 |
TDS2602 |
|
83 |
0.8 |
63 |
Show |
|
03406+4842 |
J 891 |
|
233 |
3.2 |
64 |
Show |
|
03276+4825 |
PAT 34 |
|
350 |
0.1 |
67 |
Show |
|
03288+4916 |
PAT 37 |
|
79 |
1.9 |
67 |
Show |
|
03351+4945 |
MET 29 |
AB |
29 |
2.2 |
69 |
Show |
|
03351+4945 |
MET 29 |
AC |
247 |
5.3 |
69 |
Show |
|
03351+4945 |
MET 29 |
AD |
324 |
6.2 |
69 |
Show |
|
03351+4945 |
MET 29 |
AE |
280 |
6.2 |
69 |
Show |
|
03351+4945 |
MET 29 |
AF |
113 |
10.1 |
69 |
Show |
|
03284+4915 |
PAT 36 |
|
35 |
3.0 |
69 |
Show |
|
03294+4931 |
BU 1179 |
|
141 |
0.6 |
72 |
Show |
|
03378+4943 |
WFC 250 |
|
68 |
11.1 |
75 |
Show |
|
03329+4951 |
PAT 43 |
|
337 |
0.5 |
75 |
Show |
|
03306+4947 |
HLD 8 |
|
177 |
2.4 |
79 |
Show |
|
03264+4820 |
PAT 33 |
|
315 |
0.5 |
80 |
Show |
|
03426+4833 |
BVD 191 |
|
338 |
7.5 |
84 |
Show |
|
03263+4914 |
PAT 32 |
|
357 |
0.4 |
86 |
Show |
|
03255+4830 |
PAT 31 |
|
337 |
4.4 |
87 |
Show |
|
03248+4852 |
PAT 30 |
AB |
46 |
7.3 |
95 |
Show |
|
03248+4852 |
MET 27 |
AC |
313 |
10.2 |
95 |
Show |
|
03248+4852 |
MET 27 |
AD |
108 |
12.5 |
95 |
Show |
|
03248+4852 |
MET 27 |
AE |
110 |
12.4 |
95 |
Show |
|
03248+4852 |
MET 27 |
AF |
224 |
10.4 |
95 |
Show |
|
03248+4853 |
PAT 29 |
AB |
98 |
0.3 |
95 |
Show |
|
03248+4853 |
PAT 29 |
AC |
163 |
4.6 |
95 |
Show |
|
03248+4853 |
PAT 29 |
AD |
8 |
5.4 |
95 |
Show |
|
03298+5001 |
COU2265 |
Aa,Ab |
283 |
0.7 |
95 |
Show |
|
03298+5001 |
ES 2599 |
AB |
299 |
19.2 |
95 |
Show |
|
03244+4848 |
PAT 27 |
|
198 |
3.5 |
98 |
Show |
|
03441+4831 |
BU 1182 |
AB |
261 |
4.7 |
99 |
|
|
WDS 03342+4837 : COMPONENTS
|
A |
B |
D |
B |
pa=302.8°
sep=3.74"
| |
D |
pa=180.7°
sep=34.47"
| pa=175.7°
sep=36.60"
| |
E |
pa=20.3°
sep=163.06"
| pa=21.6°
sep=162.29"
| pa=16.9°
sep=195.87"
|
03342+4837 A
Name |
HD 21931 |
|
Coord arcsec 2000 |
033412.97+483702.9 |
|
Mag |
7.38 |
|
Spectral class |
B9.5V (blue-white) |
|
PmRA |
23.00 |
|
PmDE |
-27.0 |
|
SAO |
38946 |
|
HIP |
16649 |
|
Tycho2 |
3317-00589-1 |
|
HD |
21931 |
|
BD |
BD+48 949 |
|
Tycho2 |
3317-00589-1 |
|
Pflag |
|
|
RAmdeg |
53.55402109 |
|
DEmdeg |
48.61747226 |
|
PmRA |
22.5 |
|
PmDE |
-27.2 |
|
E RAmdeg |
5 |
|
E DEmdeg |
5 |
|
E pmRA |
1.5 |
|
E pmDE |
1.6 |
|
EpRAm |
1991.56 |
|
EpDEm |
1991.37 |
|
Num |
9 |
|
Q RAmdeg |
1.4 |
|
Q DEmdeg |
0.4 |
|
Q pmRA |
1.4 |
|
Q pmDE |
0.3 |
|
BTmag |
7.396 |
|
E BTmag |
0.015 |
|
VTmag |
7.381 |
|
E VTmag |
0.011 |
|
Prox |
984 |
|
TYC |
T |
|
HIP |
16649 |
|
CCDM |
|
|
RAdeg |
53.55394333 |
|
DEdeg |
48.61753556 |
|
EpRA 1990 |
1.78 |
|
EpDE 1990 |
1.62 |
|
E RAdeg |
4.5 |
|
E DEdeg |
5.0 |
|
Posflg |
|
|
Corr |
-0.1 |
|
SAO |
38946 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
0.0009 |
|
DE1950 |
|
|
PmDE1950 |
-0.008 |
|
Vmag |
7.8 |
|
SpType |
A0 |
|
Double code |
|
|
Source |
3 |
|
CatNum |
415 |
|
DM |
BD+48 949 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
21931 |
|
M HD |
0 |
|
GC |
|
|
RA1950rad |
0.91910255 |
|
DE1950rad |
0.84562688 |
|
PmRA2000 |
0.0009 |
|
PmDE2000 |
-0.011 |
|
Catalog |
H |
|
HIP |
16649 |
|
Proxy |
|
|
RAhms |
03 34 12.95 |
|
DEdms |
+48 37 03.1 |
|
Vmag |
7.35 |
|
VarFlag |
|
|
R Vmag |
G |
|
RAdeg |
53.5539 |
|
DEdeg |
48.6175 |
|
AstroRef |
|
|
Plx |
3.59 |
|
CCDM |
03342+4837 |
|
N CCDM |
I |
|
Nsys |
1 |
|
Ncomp |
1 |
|
MultFlag |
|
|
Source |
|
|
Qual |
S |
|
M HIP |
|
|
Theta |
|
|
Rho |
|
|
HD |
21931 |
|
BD |
BD+48 949 |
|
CD |
|
|
CP |
|
|
Dm number |
+48 949 |
|
VIred |
0.05 |
|
SpType |
B9V |
|
R SpType |
|
|
Coord arcsec 2000 |
033412.95+483703.1 |
|
HIP |
16649 |
|
Sn |
5 |
|
So |
0 |
|
Nc |
1 |
|
RArad |
0.9346925464 |
|
DErad |
0.8485361365 |
|
Plx |
3.83 |
|
PmRA |
18.84 |
|
PmDE |
-32.17 |
|
E RArad |
0.51 |
|
E DErad |
0.49 |
|
E Plx |
0.72 |
|
E pmRA |
0.73 |
|
E pmDE |
0.68 |
|
Hpmag |
7.3655 |
|
E Hpmag |
0.0013 |
|
SHp |
0.011 |
|
VA |
0 |
|
BV |
0.038 |
|
E BV |
0.005 |
|
VI |
0.05 |
|
Ccdm |
03342+4837 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
0.95 |
|
DDEs |
3.1 |
|
R dRAs |
65 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
4 |
|
Vmag |
7.2 |
|
Sp |
A0 |
|
PmNote |
* |
|
PmRA |
23 |
|
PmDE |
-21 |
|
Dm number |
+48 949 |
|
Cat1 |
BD |
|
Name2 |
+48 415 |
|
Cat2 |
AGK2/3 |
|
HD |
21931 |
|
M HD |
|
|
ADS BDS |
A 2609 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
03272N4817A |
|
HIC |
16649 |
|
03342+4837 B
Coord arcsec 2000 |
033412.65+483704.9 |
|
Mag |
11.9 |
|
Calc delta mag |
4.52 |
|
Calc coord |
yes |
|
Ccdm |
03342+4837 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
* |
|
Note2 |
|
|
Discov num |
BU 787 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1958 |
|
Theta |
282 |
|
Rho |
3.8 |
|
Obs |
12 |
|
Vmag |
11.2 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A 2609 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
03272N4817B |
|
HIC |
16649 |
|
03342+4837 D
Coord arcsec 2000 |
033412.93+483628.4 |
|
Mag |
11.75 |
|
PmRA |
22.00 |
|
PmDE |
18.0 |
|
Calc delta mag |
4.37 |
|
Calc coord |
yes |
|
Ccdm |
03342+4837 |
|
RComp |
|
|
Comp |
D |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
BU 787 |
|
DRAs |
0.96 |
|
DDEs |
-31.6 |
|
R dRAs |
65 |
|
Year |
1958 |
|
Theta |
178 |
|
Rho |
35.6 |
|
Obs |
5 |
|
Vmag |
10.3 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A 2609 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
03272N4817D |
|
HIC |
|
|
03342+4837 E
Coord arcsec 2000 |
033418.67+483935.9 |
|
Mag |
8.81 |
|
PmRA |
21.00 |
|
PmDE |
-28.0 |
|
Calc delta mag |
1.43 |
|
Calc coord |
yes |
|