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  (1) 

(1) 
- 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

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	Longitude of periastron (degrees)
Start-Year:	1973.0	Year
End-Year:	2077.0	Year
Epoch:	2025.99	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
Flags:	n	Flags

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[°]
---------------------------------------------
2025.99    0.479    264.8
-------------------------
1973.0     0.861    199.7
1974.0     0.873    200.7
1975.0     0.885    201.7
1976.0     0.895    202.7
1977.0     0.905    203.6
1978.0     0.914    204.6
1979.0     0.922    205.5
1980.0     0.929    206.4
1981.0     0.936    207.3
1982.0     0.942    208.1
1983.0     0.947    209.0
1984.0     0.951    209.9
1985.0     0.954    210.7
1986.0     0.957    211.6
1987.0     0.959    212.4
1988.0     0.960    213.2
1989.0     0.960    214.1
1990.0     0.960    214.9
1991.0     0.959    215.7
1992.0     0.957    216.6
1993.0     0.955    217.4
1994.0     0.951    218.3
1995.0     0.947    219.1
1996.0     0.943    220.0
1997.0     0.937    220.8
1998.0     0.931    221.7
1999.0     0.924    222.6
2000.0     0.916    223.5
2001.0     0.908    224.4
2002.0     0.899    225.4
2003.0     0.889    226.3
2004.0     0.879    227.3
2005.0     0.867    228.3
2006.0     0.856    229.4
2007.0     0.843    230.4
2008.0     0.830    231.5
2009.0     0.815    232.7
2010.0     0.801    233.9
2011.0     0.785    235.1
2012.0     0.769    236.4
2013.0     0.752    237.7
2014.0     0.735    239.1
2015.0     0.716    240.5
2016.0     0.697    242.1
2017.0     0.678    243.7
2018.0     0.658    245.4
2019.0     0.637    247.3
2020.0     0.615    249.2
2021.0     0.594    251.3
2022.0     0.571    253.6
2023.0     0.548    256.0
2024.0     0.525    258.7
2025.0     0.502    261.6
2026.0     0.478    264.8
2027.0     0.455    268.4
2028.0     0.432    272.3
2029.0     0.409    276.7
2030.0     0.387    281.5
2031.0     0.366    287.0
2032.0     0.346    293.0
2033.0     0.329    299.8
2034.0     0.314    307.2
2035.0     0.302    315.4
2036.0     0.293    324.1
2037.0     0.288    333.2
2038.0     0.286    342.5
2039.0     0.287    351.9
2040.0     0.288      1.2
2041.0     0.290     10.4
2042.0     0.291     19.5
2043.0     0.289     28.6
2044.0     0.284     37.9
2045.0     0.277     47.7
2046.0     0.268     58.1
2047.0     0.260     69.1
2048.0     0.255     80.8
2049.0     0.254     92.7
2050.0     0.260    104.4
2051.0     0.271    115.4
2052.0     0.287    125.3
2053.0     0.308    134.0
2054.0     0.332    141.5
2055.0     0.357    148.0
2056.0     0.385    153.6
2057.0     0.413    158.5
2058.0     0.441    162.7
2059.0     0.469    166.4
2060.0     0.497    169.7
2061.0     0.524    172.7
2062.0     0.551    175.3
2063.0     0.577    177.7
2064.0     0.602    180.0
2065.0     0.627    182.0
2066.0     0.650    183.9
2067.0     0.673    185.6
2068.0     0.695    187.3
2069.0     0.715    188.8
2070.0     0.735    190.3
2071.0     0.754    191.7
2072.0     0.773    193.0
2073.0     0.790    194.3
2074.0     0.806    195.5
2075.0     0.822    196.6
2076.0     0.836    197.7

Observation Date:

Disclaimer

This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.

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.

Report Information

Double Star Calculator:		Version 1.0 ($Rev: 1734 $)
Report created:		2025-12-29 22:46:24 +0100