04268+1052 PAT 8 (HD 286820)
04h 26m 48.19s +10° 52' 16.0" P.A. 159.00 sep 0.2 mag 7.40,8.00 Sp K5 dist. 41.48 pc (135.31 l.y.)
| Coord 2000 |
04268+1052 |
|
Discov num |
PAT 8 |
|
Comp |
|
|
Coord arcsec 2000 |
04 26 48.19 +10 52 16.0 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
9 |
|
| Pa first |
78 |
|
Pa last |
159.1 |
|
P.A. Now (θ) |
170.4° |
|
| Sep first |
0.2 |
|
Sep last |
0.16 |
|
Sep. Now (ρ) |
0.157" |
|
| Mag pri |
7.40 |
|
Mag sec |
8.00 |
|
delta mag (ΔM) |
0.6 |
|
Spectral class |
K5 (yellow-orange) |
|
| Pri motion ra |
+110 |
|
Sec motion ra |
|
|
| Pri motion dec |
-010 |
|
Sec motion dec |
|
|
| Notes |
N
O
K
(See Notes, Orbital solution, K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 286820 |
|
Constellation |
Taurus |
|
HIP |
20751 |
|
Tycho2 |
0672-00425-1 |
|
| Gaia DR2 |
3306007129990778368 |
|
HD |
286820 |
|
BD |
BD+10 576 |
|
Distance |
41.48 |
|
| Distance ly |
135.31 |
|
ORBITAL ELEMENTS
| Period (P) | 19.77y | ± 0.27 |
Periastron (T) | 2017.39y | ± 0.11 |
Semi-major axis (a) | 0.201a | ± 0.01 |
| Eccentricity (e) | 0.649 | ± 0.04 |
Inclination (i) | 63° | ± 2.2 |
Longitude of periastron (ω) | 273.7° | ± 0.9 |
| Node (Ω) | 119.6° | ± 1.5 |
Notes | n | |
Reference | Tok2021c | |
| Equinox | 2000 | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
137.9 |
0.152 |
| 2001 |
148.2 |
0.160 |
| 2002 |
158.0 |
0.161 |
| 2003 |
168.0 |
0.158 |
| 2004 |
178.5 |
0.154 |
| 2005 |
189.4 |
0.151 |
| 2006 |
200.7 |
0.149 |
| 2007 |
212.1 |
0.150 |
| 2008 |
223.1 |
0.154 |
| 2009 |
233.5 |
0.159 |
| 2010 |
243.3 |
0.165 |
| 2011 |
252.2 |
0.171 |
| 2012 |
260.6 |
0.177 |
| 2013 |
268.6 |
0.179 |
| 2014 |
276.7 |
0.175 |
| 2015 |
285.6 |
0.161 |
| 2016 |
297.5 |
0.128 |
| 2017 |
330.5 |
0.055 |
| 2018 |
106.5 |
0.080 |
| 2019 |
128.4 |
0.134 |
| 2020 |
140.4 |
0.155 |
| 2021 |
150.5 |
0.161 |
| 2022 |
160.3 |
0.160 |
| 2023 |
170.4 |
0.157 |
| 2024 |
180.9 |
0.153 |
| 2025 |
192.0 |
0.150 |
| 2026 |
203.3 |
0.149 |
| 2027 |
214.7 |
0.151 |
| 2028 |
225.6 |
0.155 |
| 2029 |
235.8 |
0.160 |
| 2030 |
245.4 |
0.167 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 04268+1052 PAT 8 (HD 286820) : NOTES
| discov_num |
notes |
refcode |
| PAT 8 |
1991.8990: This K dwarf is noted as a binary with a period in excess |
|
|
of 16 years in Griffin et al. (1988), and it is likely that we have |
Grf1988 |
|
detected the spectroscopic companion. |
Msn1993a |
|
The spectroscopic solution of this 6950-d pair determined by Griffin. |
Grf2012b |
REFERENCES
| refcode |
metd |
author |
reference |
| Grf1988 |
not - |
Griffin, R.F., Griffin, R.E.M., Gunn, J.E., & Zimmerman, B.A. |
1988AJ.....96..172G |
| Grf1988 |
|
AJ 96, 172, 1988 |
|
| Grf2012b |
not - |
Griffin, R.F. |
2012JApA...33...29G |
| Grf2012b |
|
J Astrophys Astron 33, 29, 2012 |
|
| Msn1993a |
Sc j |
Mason, B.D., McAlister, H.A., Hartkopf, W.I., & Bagnuolo, W.G. |
1993AJ....105..220M |
| Msn1993a |
|
AJ 105, 220, 1993 |
|
| Tok2021c |
orb - |
Tokovinin, A. |
2021IAUDS.203....1S |
| Tok2021c |
|
Inf. Circ. 203, 1, 2021 |
|
DISCOVERER
| idgroup |
discov |
author |
| 1 |
PAT |
Patience, J., Ghez, A.M., Reid, I.N., Weinberger, A.J., & Matthews, K. |
| 4 |
PAT |
Patience, J., White, R.J., Ghez, A.M., McCabe, C., McLean, I.S., Larkin, J.E., |
| 4 |
PAT |
Prato, L., Kim, S.S., et al. |
| 5 |
PAT |
Patience, J., Zavala, R.T., Prato, L., Franz, O., Wasserman, L., Tycner, C., |
| 5 |
PAT |
Hutter, D.J., & Hummel, C.A. |
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 04268+1052 |
PAT 8 |
|
1996 |
2 |
295 |
0.1 |
9.58 |
|
K5 |
N |
042648.19+105216.0 |
| 04268+1052 |
PAT 8 |
|
2019 |
3 |
139 |
0.2 |
7.40 |
8.00 |
K5 |
N K |
042648.19+105216.0 |
| 04268+1052 |
PAT 8 |
|
2020 |
8 |
149 |
0.2 |
7.40 |
8.00 |
K5 |
N K |
042648.19+105216.0 |
| 04268+1052 |
PAT 8 |
|
2021 |
9 |
159 |
0.2 |
7.40 |
8.00 |
K5 |
NO K |
042648.19+105216.0 |
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WDS 04268+1052 PAT 8 (HD 286820) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 04268+1052 PAT 8 (HD 286820) : MEASURES
No records found.
WDS 04268+1052 (HD 286820) : VIRTUAL EYEPIECE
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WDS 04268+1052 (HD 286820) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
