☰Double Star Calculator - Results

WARNING: Invalid or missing GAIA IDs

Measurements for BU 382 AB


WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
-------------------------------------------------------------------------------------------------
22537+4445  BU 382      AB    1    --       --       B2024.685  HWI  120/900 APO   ASI678MM 

B2024.685: 
- Image elongated with correct PA of around 260°
- But measurements not possible
- Orbit: Epheremis: 2024.0    0.525"    258.7°

-- Image of BU-382-AB-taken with Equinox 120/900 APO --

WDS record for BU 382 AB

wds_id                       : 22537+4445
discoverer_code              : BU
discoverer_number            : 382
discoverer_components        : AB
date_first                   : 1874
date_last                    : 2023
num_of_obs                   : 181
pa_first                     : 225
pa_last                      : 249
sep_first                    : 1.0
sep_last                     : 0.8
mag_primary                  : 5.97
mag_secondary                : 7.79
spectral_type                : A3m+F6V
primary_proper_motion_RA     : -3
primary_proper_motion_DEC    : -17
secondary_proper_motion_RA   : -3
secondary_proper_motion_DEC  : -17
dm_number                    : +43 4331
notes                        : NO
precise_coordinate           : 225340.16+444457.1
                             : 22:53:40.16 +44:44:57.1

WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS
O: Orbit described in WDSNOT MEMO and has entry in Orbit Catalog

Orbital Elements for BU 382 AB

WDS:	BU 382 AB	WDS ID/Discoverer
P:	104.850	Orbital period (years)
a:	0.626	Semi-major axis (arcseconds)
i:	47.2	Inclination (degrees)
Ω:	29.9	Longitude of ascending node (degrees)
T:	2043.800	Epoch of periastron passage (year)
e:	0.541	Eccentricity
ω:	9.0	Argument of periastron (degrees)
Start-Year:	1972.575	Year
End-Year:	2077.425	Year
Epoch:	2016.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU 382 AB
Position:	225340.16+444457.1	Epoch-2000 right ascension and declination
WDS-ID:	22537+4445	WDS designation
Discoverer Code:	BU 382 AB	Discover designation and components
ADS number:	16345	Aitken Double Star catalog
HD number:	216608	HD catalog number
Hipparcos number:	113048	Hipparcos catalog number
V1:	5.97	Magnitude of the primary
V2:	7.79	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2011	Date of last observation
Orbit grade:	2	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate 8 = Interferometric 9 = Astrometric
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Sca2014a	Reference

Double Star Orbit for BU 382 AB

WDS 6th Orbit including measures of BU 382 AB

-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --

Legend:

Green plus signs:	Visual (micrometric) measures
Violet asterisks:	Photographic measures
Blue symbols:	Various interferometric techniques
Dot-dash line:	Indicates the line of nodes

Ephemeris of BU 382 AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2016.00    0.697   242.07
--------------------------
1972.00    0.848   198.66
1973.00    0.861   199.71
1974.00    0.873   200.74
1975.00    0.885   201.73
1976.00    0.895   202.70
1977.00    0.905   203.65
1978.00    0.914   204.58
1979.00    0.922   205.49
1980.00    0.929   206.39
1981.00    0.936   207.27
1982.00    0.942   208.15
1983.00    0.947   209.01
1984.00    0.951   209.86
1985.00    0.954   210.71
1986.00    0.957   211.55
1987.00    0.959   212.39
1988.00    0.960   213.23
1989.00    0.960   214.06
1990.00    0.960   214.89
1991.00    0.959   215.73
1992.00    0.957   216.57
1993.00    0.955   217.41
1994.00    0.951   218.25
1995.00    0.947   219.11
1996.00    0.943   219.97
1997.00    0.937   220.84
1998.00    0.931   221.72
1999.00    0.924   222.61
2000.00    0.916   223.52
2001.00    0.908   224.45
2002.00    0.899   225.39
2003.00    0.889   226.35
2004.00    0.879   227.33
2005.00    0.867   228.34
2006.00    0.856   229.38
2007.00    0.843   230.44
2008.00    0.830   231.54
2009.00    0.815   232.68
2010.00    0.801   233.86
2011.00    0.785   235.08
2012.00    0.769   236.35
2013.00    0.752   237.68
2014.00    0.735   239.07
2015.00    0.716   240.54
2016.00    0.697   242.07
2017.00    0.678   243.70
2018.00    0.658   245.43
2019.00    0.637   247.26
2020.00    0.615   249.22
2021.00    0.594   251.33
2022.00    0.571   253.59
2023.00    0.548   256.05
2024.00    0.525   258.72
2025.00    0.502   261.63
2026.00    0.478   264.84
2027.00    0.455   268.37
2028.00    0.432   272.29
2029.00    0.409   276.65
2030.00    0.387   281.52
2031.00    0.366   286.96
2032.00    0.346   293.03
2033.00    0.329   299.79
2034.00    0.314   307.25
2035.00    0.302   315.37
2036.00    0.293   324.06
2037.00    0.288   333.16
2038.00    0.286   342.50
2039.00    0.287   351.89
2040.00    0.288     1.20
2041.00    0.290    10.38
2042.00    0.291    19.47
2043.00    0.289    28.60
2044.00    0.284    37.94
2045.00    0.277    47.70
2046.00    0.268    58.06
2047.00    0.260    69.11
2048.00    0.255    80.76
2049.00    0.254    92.67
2050.00    0.260   104.37
2051.00    0.271   115.36
2052.00    0.287   125.28
2053.00    0.308   134.00
2054.00    0.332   141.54
2055.00    0.357   148.04
2056.00    0.385   153.63
2057.00    0.413   158.47
2058.00    0.441   162.70
2059.00    0.469   166.42
2060.00    0.497   169.71
2061.00    0.524   172.66
2062.00    0.551   175.33
2063.00    0.577   177.74
2064.00    0.602   179.95
2065.00    0.627   181.99
2066.00    0.650   183.88
2067.00    0.673   185.64
2068.00    0.695   187.28
2069.00    0.715   188.83
2070.00    0.735   190.29
2071.00    0.754   191.67
2072.00    0.773   192.99
2073.00    0.790   194.25
2074.00    0.806   195.46
2075.00    0.822   196.62
2076.00    0.836   197.74
2077.00    0.850   198.82
2078.00    0.863   199.87

Observation Date:

Disclaimer

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Acknowledgements

The Double Star Calculator makes use of data from the European Space Agency (ESA) mission Gaia, processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Additionally, it incorporates data from the Washington Double Star Catalog, maintained at the U.S. Naval Observatory, and makes use of the Aladin Sky Atlas developed at CDS, Strasbourg Observatory, France. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.

Report Information

Double Star Calculator:		Version 1.2 ($Rev: 2591 $)
Report created:		2026-09-09 08:16:37 +0200