22280+5742 KR   60AB (DO Cep)

 
 
22h 27m 59.20s +57 41' 43.8" P.A. 205.60 sep 2.1 mag 9.93,11.41 Sp M3.5+M4.5 dist. 4 pc (13.05 l.y.)
 
 
Coord 2000
22280+5742
Discov num
KR   60
Comp
AB
Coord arcsec 2000
22 27 59.20 +57 41 43.8
Date first
1890
Date last
2016
Obs
292
Pa first
179
Pa last
266
P.A. Now (θ)
205.6°
Sep first
2.3
Sep last
1.5
Sep. Now (ρ)
2.06"
Mag pri
9.93
Mag sec
11.41
delta mag (ΔM)
1.48
Spectral class
M3.5+M4.5 (red/red)
Pri motion ra
-806
Sec motion ra
-713
Pri motion dec
-399
Sec motion dec
-321
Notes
N O (See Notes, Orbital solution)
rPM=0.135 (< 0.3, Physical double)
This double is physical.
 
 
22280+5742 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show DO Cep 22280+5742 KR 60 AB 1890 2016 292 206 2.1 9.93 11.41 1.48 Y <===
Show 22280+5742 KR 60 AC 1890 2016 83 62 139.8 9.93 10.53 0.60
Show 22280+5742 KR 60 AD 1900 2016 10 56 119.3 9.93 14.30 4.37
Show 22280+5742 KR 60 AE 1900 2016 17 77 163.0 9.93 13.33 3.40
Show 22280+5742 KR 60 AF 1901 2016 16 46 71.9 9.93 14.43 4.50
Show 22280+5742 KR 60 AG 1912 2016 6 114 68.4 9.93 15.14 5.21
Show 22280+5742 KR 60 AH 1912 2016 8 267 50.2 9.93 13.02 3.09
Show 22280+5742 KR 60 AI 1873 2016 18 119 238.2 9.93 8.31 1.62
Show 22280+5742 HEL 4 AJ 1999 2016 10 113 32.5 9.93 15.70 5.77
Show 22280+5742 HZE 5 AK 2006 2006 1 0 7.2 4.78 16.00 11.22
Show 22280+5742 FYM 118 AL 1999 2016 5 13 107.0 9.93 15.44 5.51
Show 22280+5742 FYM 118 AM 1999 2016 5 356 78.4 9.93 15.60 5.67
Show 22280+5742 FYM 118 AO 1999 2016 5 135 83.0 9.93 15.17 5.24
Show 22280+5742 FYM 118 AR 1999 2016 5 113 113.7 9.93 15.20 5.27
Show 22280+5742 FYM 118 AS 1999 2016 5 264 13.2 9.93 15.70 5.77
Show 22280+5742 FYM 118 AU 1999 2016 5 103 137.6 9.93 15.20 5.27
Show 22280+5742 KR 60 BC 1898 2016 60 62 141.2 11.41 10.53 0.88
Show 22280+5742 HEL 4 BJ 1999 2016 7 112 33.9 11.41 15.70 4.29
Show 34489 22280+5742 FYM 118 CD 2003 2016 8 272 24.5 10.53 14.30 3.77
Show 34489 22280+5742 KR 60 CE 1900 2016 19 130 45.9 10.53 13.33 2.80 Y
Show 34489 22280+5742 FYM 118 CN 1999 2016 9 52 42.1 10.53 14.92 4.39
Show 34489 22280+5742 FYM 118 CP 1999 2016 9 320 46.5 10.53 14.79 4.26
Show 34489 22280+5742 FYM 118 EQ 1999 2016 9 206 14.2 13.33 15.70 2.37
20-fold system
20 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
265.5
Precise sep
1.5
Var name
DO Cep
Constellation
Cepheus
HIP
110893
Tycho2
3991-00092-1
HD
239960
ADS
15972
GL
Gl 860A
BD
BD+56 2783
Distance
4
Distance ly
13.05
last precise pa
265.5
last precise sep
1.5
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.5814y± 0.0345 Periastron (T)1970.2342y± 0.0389 Semi-major axis (a)2.40113a± 0.01042
Eccentricity (e)0.40847± 0.00223 Inclination (i)165.701°± 1.277 Longitude of periastron (ω)207.481°± 5.577
Node (Ω)150.665°± 5.42 Note Grade1(1=Definitive, 9=Indet.)
Equinox Last observation2013
label rho theta
2000 3.039 94.6
2001 2.954 90.0
2002 2.861 85.2
2003 2.758 79.9
2004 2.647 74.3
2005 2.528 68.2
2006 2.402 61.4
2007 2.269 53.8
2008 2.132 45.3
2009 1.994 35.6
2010 1.856 24.5
2011 1.725 11.6
2012 1.605 356.7
2013 1.506 339.6
2014 1.437 320.5
2015 1.409 300.1
2016 1.431 279.6
2017 1.500 260.3
2018 1.611 243.2
2019 1.748 228.5
2020 1.900 216.1
2021 2.057 205.6
2022 2.213 196.5
2023 2.364 188.7
2024 2.505 181.7
2025 2.638 175.5
2026 2.759 169.8
2027 2.869 164.6
2028 2.968 159.8
2029 3.056 155.3
2030 3.132 151.0

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
 
grafico orbita






wds22280%2B5742d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
22280+5742 KR 60 AB 2007 268 48 2.2 9.93 11.41 M3.5+M4.5 NOD 222800.42+574149.3
22280+5742 KR 60 AB 2008 270 42 2.1 9.93 11.41 M3.5+M4.5 NOD 222800.42+574149.3
22280+5742 KR 60 AB 2009 276 29 1.8 9.93 11.41 M3.5+M4.5 NOD 222800.42+574149.3
22280+5742 KR 60 AB 2010 283 17 1.6 9.93 11.41 M3.5+M4.5 NOD 222800.42+574149.3
22280+5742 KR 60 AB 2013 286 329 1.5 9.93 11.41 M3.5 M4.5 NOD 222759.20+574143.8
22280+5742 KR 60 AB 2015 289 288 1.4 9.93 11.41 M3.5+M4.5 NO 222759.20+574143.8
22280+5742 KR 60 AB 2016 291 266 1.5 9.93 11.41 M3.5+M4.5 NO 222759.20+574143.8

If you need more information about this double, apply for a data request form to the WDS.
 
 
WDS 22280+5742 KR 60AB - DO CEP : NOTES
 
 
discov_num notes refcode
KR 60 B is the flare star DO Cep, which is fairly active with flares of small
to moderate amplitudes.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
AC, AE, AF, and AI: Optical pair, based on study of relative motion of
the components using the method of apparent motion parameters. Kiy2008
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 0.43 +/- 0.06, 0.42, and 0.56 Msun, respectively. Mlk2012
HZE 5 Heinze et al. (2010) determine the K component is a background object. Hze2010
FYM 118 The EQ pair was initially listed incorrectly as CQ. The CD pair was
initially listed incorrectly as a new CT pair. FyM2014b
KR 60 AD, AG: Rectilinear solutions by Mason & Hartkopf (2016). Msn2016a
AF: Rectilinear solution by Hurowitz et al. (2014). USN2014b
HEL 4 AJ: Rectilinear solution by Mason & Hartkopf (2016). Msn2016a
FYM 118 AM, AO, AS: Rectilinear solutions by Mason & Hartkopf (2016). Msn2016a
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
FyM2014b C - Fay, M. .
FyM2014b private communication
Hze2010 A j Heinze, A.N., Hinz, P.M., Sivanandam, S., Kenworthy, M., Meyer, M., & Miller, D. 2010ApJ...714.1551H
Hze2010 ApJ 714, 1551, 2010
Izm2019 orb u Izmailov, I.S. 2016AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019
Izm2019
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
KR Kruger, A. (from additional DD list) ...................
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Msn2016a lin - Mason, B.D. & Hartkopf, W.I. 2016IAUDS.189....1M
Msn2016a Inf. Circ. 189, 1, 2016
USN2014b lin - Hurowitz, J.L., Hartkopf, W.I., & Mason, B.D. 2014IAUDS.183....1H
USN2014b Inf. Circ. 183, 1, 2014
 
 
DISCOVERER
 
 
discov author
FYM Fay, M.
HEL Helminiak, K.G., Kuzuhara, M., Mede, K., Brandt, T.D., Kandori, R., Suenaga, T.,
HEL Helminiak, K. & Konacki, M.
HEL Helminiak, K.G., Konacki, M., Muterspaugh, M.W., Browne, S.E., Howard, A.W., &
HEL Helminiak, K., Konacki, M., Kulkarni, S.R., & Eisner, J.
HZE Heinze, A, Hinz, P.M., & Sivanandam, S.
HZE Heinze, A.N., Hinz, P.M., Sivanandam, S., Kenworthy, M., Meyer, M., & Miller, D.

 
 
WDS 22280+5742 KR 60AB - DO CEP : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 20/10/25 Adam Long difficut separated 235 interesting but to observe in better conditions Seeing not great, transparency good. A dark background and lower mag/ bigger exit pupil are useful tools for this pair.

 
 
WDS 22280+5742 KR 60AB - DO CEP : MEASURES
 
 
No records found.

 
 
WDS 22280+5742 KR 60AB - DO Cep : Virtual Eyepiece
 
 

22280+5742 A mag 9.93 Sp M3.5 22280+5742 B sep 6.2 P.A. 84.40 mag 11.41 Sp M4.5 22280+5742 C sep 129.1 P.A. 62.20 mag 10.53 Sp M3 22280+5742 D sep 84.9 P.A. 38.60 mag 14.3 Sp M2 22280+5742 E sep 152.8 P.A. 78.20 mag 13.33 Sp M2 22280+5742 F sep 56.9 P.A. 29.30 mag 14.43 22280+5742 G sep 43.2 P.A. 129.10 mag 15.14 Sp K9 22280+5742 H sep 26.9 P.A. 264.20 mag 13.02 Sp M1 22280+5742 I sep 160.7 P.A. 136.20 mag 8.31 Sp K1 22280+5742 J sep 20.4 P.A. 128.70 mag 15.7 22280+5742 K sep 7.2 P.A. 0.10 mag 16 22280+5742 L sep 104.9 P.A. 7.30 mag 15.44 Sp K9 22280+5742 M sep 78.2 P.A. 357.90 mag 15.6 Sp M1 22280+5742 N sep 157.4 P.A. 56.90 mag 14.92 Sp K3 22280+5742 O sep 66.5 P.A. 151.80 mag 15.17 Sp K7 22280+5742 P sep 136.9 P.A. 45.70 mag 14.79 Sp K7 22280+5742 Q sep 147.5 P.A. 82.80 mag 15.7 Sp K9 22280+5742 R sep 71.7 P.A. 128.90 mag 15.2 Sp M2 22280+5742 S sep 7.2 P.A. 258.90 mag 15.7 Sp K9 22280+5742 U sep 78.0 P.A. 113.00 mag 15.2 Sp K7 virtual eyepiece
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Radius:
 
 
WDS 22280+5742 KR 60AB - DO Cep : Aladin DSS image @ 22h 27m 59.20s +57 41' 43.8"